Misc - KANNO Atsushi
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大容量車載ネットワーク技術の研究開発と今後の展望 Invited Reviewed
菅野敦史
107 ( 11 ) 1021 - 1028 2024.11
Authorship：Lead author, Corresponding author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal)
Other Link： https://app.journal.ieice.org/trial/107_11/k107_11_1021/index.html
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光ファイバ無線技術の研究開発とその応用展開 Invited
久利敏明, 菅野敦史, Pham Tien Dat
電子情報通信学会 ソサイエティ大会 1 - 1 2024.09
Language：Japanese Publishing type：Research paper, summary (national, other academic conference)
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90GHz帯滑走路面異物検知システムの開発と実証
加島謙一, 川西哲也, 菅野敦史, 米本成人, 中村一城
( 125 ) 14 - 19 2024.07
Language：Japanese Publishing type：Internal/External technical report, pre-print, etc.
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完全自動運転社会実現に向けた技術開発動向と課題 Invited Reviewed
菅野敦史
107 ( 2 ) 106 - 113 2024.02
Authorship：Lead author, Corresponding author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal)
Other Link： https://app.journal.ieice.org/trial/107_2/k107_2_106/index.html
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電波と光を融合したインフラ用無線システム Invited
柴垣信彦, 佐藤洋介, 菅野敦史
2023 ( 6 ) 94 - 100 2023.05
Authorship：Last author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal)
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LiNbO<sub>3</sub> Quantum Transducers for Quantum Internet
山口祐也, 菅野敦史, 山本直克, 山崎歴舟, 野口篤史, 野口篤史, 野口篤史, 加藤真也, 青木隆朗, 佐々木遼, 不破麻理亜, 宇佐見康二, 中村泰信, 中村泰信
電子情報通信学会論文誌 C(Web) J105-C ( 10 ) 2022
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Optical Single-Side-Band Modulator Integrated with Tunable MMI Coupler using LiNbO<sub>3</sub> waveguides and Microwave Power Splitter
安森昌太朗, 平井杏奈, 松本祐一, 佐藤孝憲, 河合正, 榎原晃, 中島慎也, 菅野敦史
電子情報通信学会大会講演論文集(CD-ROM) 2022 2022
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Mach-Zehnder Optical Modulator with Tunable Multimode Interference Coupler of Ti:LiNbO<sub>3</sub> Waveguides for Modulation of High Extinction Ratio
平井杏奈, 安森昌太朗, 松本祐一, 佐藤孝憲, 河合正, 榎原晃, 中島慎也, 菅野敦史, 山本直克
電子情報通信学会技術研究報告(Web) 121 ( 350(PN2021 32-51) ) 2022
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Quantum Transducers for Quantum Microwave Photonics
山口祐也, 菅野敦史, 山本直克, 山崎歴舟, 加藤真也, 青木隆朗, 野口篤史, 野口篤史, 佐々木遼, 不破麻里亜, 宇佐見康二, 中村泰信, 中村泰信
電子情報通信学会技術研究報告(Web) 121 ( 39(MWP2021 1-8) ) 2021
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Gbps-class solar-blind optical wireless communication based on deep-ultraviolet AlGaN LEDs
小島一信, 吉田悠来, 白岩雅輝, 淡路祥成, 菅野敦史, 山本直克, 平野光, 長澤陽祐, 一本松正道, 秩父重英
電子情報通信学会大会講演論文集(CD-ROM) 2021 2021
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東北大学グリーンネストICT LEDを用いたノイズに強い光無線通信技術の研究~真夏の直射日光下において毎秒1ギガビット以上の通信速度を実現~
小島一信, 秩父重英, 吉田悠来, 白岩雅輝, 菅野敦史, 山本直克, 淡路祥成, 平野光, 長澤陽祐, 一本松正道
( 342 ) 2021
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A solar-blind optical wireless communication over diffuse line-of-site link based on AlGaN light-emitting diodes and multi-pixel photon counter
小島一信, 吉田悠来, 白岩雅輝, 淡路祥成, 菅野敦史, 山本直克, 平野光, 長澤陽祐, 一本松正道, 秩父重英
応用物理学会春季学術講演会講演予稿集(CD-ROM) 67th 2020
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Gb/s-class solar-blind optical wireless communication by using AlGaN-based deep-ultraviolet light-emitting diodes
小島一信, 秩父重英, 吉田悠来, 白岩雅輝, 淡路祥成, 菅野敦史, 山本直克, 長澤陽祐, 平野光
Optronics ( 462 ) 2020
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Study of automatic bias control systems for middle- and long-distance radio over fiber transmission
119 ( 46 ) 15 - 18 2019.05
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深紫外AlGaN発光ダイオードの時間分解エレクトロルミネセンス分光
小島一信, 吉田悠来, 白岩雅輝, 淡路祥成, 菅野敦史, 山本直克, 平野光, 長澤陽祐, 一本松正道, 秩父重英
66th 2019
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深紫外AlGaN発光ダイオードの顕微エレクトロルミネセンス測定
小島一信, 吉田悠来, 白岩雅輝, 淡路祥成, 菅野敦史, 山本直克, 平野光, 長澤陽祐, 一本松正道, 秩父重英
80th 2019
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100GHz帯ミリ波による対列車通信システムのフィールド試験
中村一城, 岩澤永照, 岩城詞也, 竹内恵一, 川崎邦弘, 柴垣信彦, 梁取勝也, 佐藤洋介, 藤井誠人, 加島謙一, 菅野敦史, 山本直克, 川西哲也, 川西哲也
119 ( 8(RCS2019 1-19)(Web) ) 2019
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An Outdoor Evaluation of 1-Gbps Optical Wireless Communication using AlGaN-based LED in 280-nm Band Reviewed
Yoshida Y, Kojima K, Shiraiwa M, Awaji Y, Kanno A, Yamamoto N, Chichibu S.F, Hirano A, Ippommatsu M
2019 Conference on Lasers and Electro-Optics, CLEO 2019 - Proceedings 2019
Publishing type：Article, review, commentary, editorial, etc. (international conference proceedings)
DOI： 10.23919/CLEO.2019.8750309
Other Link： http://orcid.org/0000-0003-0128-1978
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A study on figure of merit of optical modulator
118 ( 129 ) 51 - 54 2018.07
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280nm帯深紫外AlGaN発光ダイオードを用いた日光下における1.6Gbps光無線伝送
小島一信, 吉田悠来, 白岩雅輝, 淡路祥成, 菅野敦史, 山本直克, 秩父重英
79th 2018
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深紫外発光ダイオードを用いたソーラーブラインド・ギガビット級光無線伝送
小島一信, 吉田悠来, 白岩雅輝, 淡路祥成, 菅野敦史, 山本直克, 秩父重英
18th 2018
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1.6-Gbps LED-Based Ultraviolet Communication at 280 nm in Direct Sunlight Reviewed
Kojima K, Yoshida Y, Shiraiwa M, Awaji Y, Kanno A, Yamamoto N, Chichibu S
European Conference on Optical Communication, ECOC 2018-September 2018
Publishing type：Article, review, commentary, editorial, etc. (international conference proceedings)
DOI： 10.1109/ECOC.2018.8535544
Other Link： http://orcid.org/0000-0003-0128-1978
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Development of radio over fiber technologies for radiocommunication and imaging, and its application in millimeter-wave bands
117 ( 297 ) 1 - 5 2017.11
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Optical Two-Tone Signals Consisting of Higher-Order Modulation Sidebands Generated with Integrated Mach-Zehnder Modulator
117 ( 292 ) 19 - 22 2017.11
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Experimental study of short-range radio over fiber system using multi-mode fibers
117 ( 292 ) 23 - 26 2017.11
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Development Activity of Vacuum Electronics in THz Band
117 ( 267 ) 13 - 16 2017.10
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Radio regulations and provisions in the 90-GHz band spectrum
117 ( 246 ) 173 - 175 2017.10
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Frequency Response of Differential Mode O/E Conversion and Common Mode Rejection Ratio in Coherent Receivers
117 ( 140 ) 183 - 188 2017.07
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Optimization of modulation bias points on an optical modulator for RoF-based millimeter-wave radar system
2017 ( 62 ) 123 - 126 2017.07
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Optimization of modulation bias points on an optical modulator for RoF-based millimeter-wave radar system
117 ( 142 ) 123 - 126 2017.07
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Optimization of modulation bias points on an optical modulator for RoF-based millimeter-wave radar system
117 ( 143 ) 123 - 126 2017.07
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Interference Reduction by Frequency Chirp Speed Difference of FM-CW Linear Cell Radar
117 ( 23 ) 25 - 29 2017.05
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Wireless Electro-Optic Modulators Using Multi-Layered Stacked Patch-Antennas with a Narrow Gap
116 ( 390 ) 213 - 218 2017.01
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Wireless Electro-Optic Modulators Using Multi-Layered Stacked Patch-Antennas with a Narrow Gap
2017 ( 1 ) 213 - 218 2017.01
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Wireless Electro-Optic Modulators Using Multi-Layered Stacked Patch-Antennas with a Narrow Gap
116 ( 387 ) 213 - 218 2017.01
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Wireless Electro-Optic Modulators Using Multi-Layered Stacked Patch-Antennas with a Narrow Gap
116 ( 388 ) 213 - 218 2017.01
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Wireless Electro-Optic Modulators Using Multi-Layered Stacked Patch-Antennas with a Narrow Gap
116 ( 389 ) 213 - 218 2017.01
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Wireless Electro-Optic Modulators Using Multi-Layered Stacked Patch-Antennas with a Narrow Gap
116 ( 391 ) 213 - 218 2017.01
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Wireless Electro-Optic Modulators Using Multi-Layered Stacked Patch-Antennas with a Narrow Gap
116 ( 386 ) 213 - 218 2017.01
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Study on optical signal generation for 1-THz-band multi-level signal transmission
116 ( 297 ) 13 - 16 2016.11
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A Simple Diversity Scheme Using the Carrier Phase Modulation for Millimeter-Wave-Band Pol.-MUX MIMO-RoF Systems
116 ( 297 ) 17 - 22 2016.11
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Integrated Semiconductor Optical-to-Terahertz Signal Converter : Toward Seamless Connection between Optical and Terahertz communication
116 ( 274 ) 109 - 114 2016.10
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Development Activity of Vacuum Electronics in THz Band
116 ( 268 ) 9 - 12 2016.10
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Frequency Response of Differential Mode O/E Conversion and Common Mode Rejection Ratio in Coherent Receivers
116 ( 154 ) 37 - 42 2016.07
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Multiband Wireless Signal and Multi-RAT Transmission over a Seamless Fiber-Millimeter-Wave System (エレクトロニクスシミュレーション)
TIEN DAT Pham, 菅野 敦史, 山本 直克, 川西 哲也
116 ( 155 ) 117 - 121 2016.07
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Multiband Wireless Signal and Multi-RAT Transmission over a Seamless Fiber-Millimeter-Wave System (マイクロ波)
TIEN DAT Pham, 菅野 敦史, 山本 直克, 川西 哲也
116 ( 153 ) 117 - 121 2016.07
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Broadband Multi-cycle Frequency-chirped Terahertz pulse generation from PPLN
116 ( 15 ) 13 - 17 2016.04
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C-4-1 Development of zero-bias operational UTC-PD for photonic wireless communications
Umezawa T., Kashima K., Kanno A., Akahane K., Matsumoto A., Yamamoto N., Kawanishi T.
Proceedings of the IEICE General Conference 2016 ( 1 ) 205 - 205 2016.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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BI-4-4 Radio over fiber technology
Kanno Atsushi
Proceedings of the IEICE General Conference 2016 ( 1 ) "SS - 73"-"SS-74" 2016.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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C-14-4 Study of IF over fiber transmission for W-band millimeter-wave signal in a radio over fiber network
Kanno Atsushi, Dat Pham Tien, Yamamoto Naokatsu, Kawanishi Tetsuya
Proceedings of the IEICE General Conference 2016 ( 1 ) 229 - 229 2016.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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C-3-33 Low Driving-Voltage and Low-Chirp Mach-Zehnder Modulator with Active Y-branch Using Thin LN Substrate
YAMAGUCHI Yuya, KANNO Atsushi, KAWANISHI Tetsuya, IZUTSU Masayuki, NAKAJIMA Hirochika
Proceedings of the IEICE General Conference 2016 ( 1 ) 171 - 171 2016.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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B-10-45 Common Mode Rejection Ratio (CMRR) Measurement of a Coherent Receiver Using 2 Pairs of 2-Tone Lightwaves
Inagaki Keizo, Kawanishi Tetsuya, Kanno Atsushi, Yamamoto Nokatsu
Proceedings of the IEICE General Conference 2016 ( 2 ) 338 - 338 2016.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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Evaluation of effects of IQ imbalance of W-band IQ mixer for direct down conversion in 10-Gbaud QPSK RoF transmission
115 ( 430 ) 199 - 204 2016.01
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Invited Talk : Report on MWP2015
115 ( 433 ) 65 - 69 2016.01
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OOK bias free operational 107 Gbaud high speed UTC-PD module
115 ( 431 ) 217 - 220 2016.01
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300-GHz FM-CW radar system by radio over fiber technique
115 ( 433 ) 331 - 334 2016.01
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Frequency-Stabilized Millimeter-Wave Signal Generation by Optical Frequency Locked-Loop and Optical Frequency Comb Technologies
115 ( 431 ) 205 - 209 2016.01
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Advanced photonic ICT devices and their system applications using quantum-dot technology
Naokatsu Yamamoto, Kouichi Akahane, Toshimasa Umezawa, Atsushi Matsumoto, Atsushi Kanno, Tetsuya Kawanishi, Tetsuya Kawanishi, Tomohiro Kita, Hirohito Yamada
Asia Communications and Photonics Conference, ACPC 2015 2015.12
Publishing type：Research paper, summary (international conference)
Quantum-dot nanotechnology is attractive for use in advanced photonic devices that will augment the available optical-frequency resources and will increase the number of wavelength channels usable by wired and wireless networks in short/middle-range communication systems. © 2015 OSA.
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Single-Sideband Modulation Using High Extinction-Ratio Parallel Mach-Zehnder Modulator with Third-Order Harmonic Superposition
115 ( 278 ) 177 - 180 2015.10
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Single-Sideband Modulation Using High Extinction-Ratio Parallel Mach-Zehnder Modulator with Third-Order Harmonic Superposition
115 ( 276 ) 177 - 180 2015.10
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Single-Sideband Modulation Using High Extinction-Ratio Parallel Mach-Zehnder Modulator with Third-Order Harmonic Superposition
115 ( 277 ) 177 - 180 2015.10
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C-14-17 Improvement of Modulation Efficiency of Electro-Optic Modulators with Gap-Embedded Patch Antenna Utilizing Stacked Structure
Aya Hironori, Wijayanto Yusuf Nur, Kanno Atsushi, Kawanishi Tetsuya, Murata Hiroshi, Okamura Yasuyuki
Proceedings of the Society Conference of IEICE 2015 ( 1 ) 183 - 183 2015.08
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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90GHz Optical Phase Modulator Using Slotted Patch Antennas on Thin LiNbO₃ Optical Crystal (マイクロ波・ミリ波フォトニクス)
WIJAYANTO Yusuf Nur, KANNO Atsushi, KAWANISHI Tetsuya
115 ( 145 ) 149 - 154 2015.07
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90GHz Optical Phase Modulator Using Slotted Patch Antennas on Thin LiNbO₃ Optical Crystal (エレクトロニクスシミュレーション)
WIJAYANTO Yusuf Nur, KANNO Atsushi, KAWANISHI Tetsuya
115 ( 144 ) 149 - 154 2015.07
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90GHz Optical Phase Modulator Using Slotted Patch Antennas on Thin LiNbO₃ Optical Crystal (マイクロ波)
WIJAYANTO Yusuf Nur, KANNO Atsushi, KAWANISHI Tetsuya
115 ( 142 ) 149 - 154 2015.07
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Optical Frequency-Interleaving Full-Duplex Technique for Simultaneous Transmission of Millimeter-Wave-Band Frequency-Modulated Continuous-Wave Downlink Signal and 10-Gb/s-Class On-Off-Keying Uplink Signal
115 ( 144 ) 137 - 142 2015.07
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High-Spectral Efficiency Fiber-Millimeter-Wave System Using Intermediate Frequency-over-Fiber and Remote Local-Oscillator Signal Delivery (マイクロ波・ミリ波フォトニクス)
TIEN DAT Pham, 菅野 敦史, 川西 哲也
115 ( 53 ) 45 - 50 2015.05
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C-3-70 Extinction-Ratio and Chirp Tunable Mach-Zehnder Modulator
YAMAGUCHI Yuya, NAKAJIMA Shinya, KANNO Atsushi, KAWANISHI Tetsuya, IZUTSU Masayuki, NAKAJIMA Hirochika
Proceedings of the IEICE General Conference 2015 ( 1 ) 194 - 194 2015.02
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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B-10-67 Simultaneous 10 Gbaud QPSK transmission over a 10 km-long holey fiber in O-, C-bands
Yagi Fumiya, Murano Akihiro, Yamamoto Naokatsu, Kanno Atsushi, Kawanishi Tetsuya, Sotobayashi Hideyuki
Proceedings of the IEICE General Conference 2015 ( 2 ) 403 - 403 2015.02
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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B-10-80 Widely linear EDFA for analog Radio-over-Fiber Transmission with 10GE signals
Shiraiwa Masaki, Kanno Atsushi, Awji Yoshinari, Wada Naoya, Kawanishi Tetsuya, Kitayama Ken-ichi
Proceedings of the IEICE General Conference 2015 ( 2 ) 416 - 416 2015.02
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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C-14-22 Ultra-broadband UTC-PD beyond 110 GHz at zero bias
Umezawa Toshimasa, Akahane Kouichi, Yamamoto Naokatsu, Inagaki Keizo, Kanno Atsushi, Kawanishi Tetsuya
Proceedings of the IEICE General Conference 2015 ( 1 ) 240 - 240 2015.02
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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300-GHz coherent signal transmission using high-gain antennas
KANNO Atsushi, KURI Toshiaki, MOROHASHI Isao, HOSAKO Iwao, KAWANISHI Tetsuya, YOSHIDA Yuki, KITAYAMA Ken-ichi
Technical report of IEICE. LQE 114 ( 432 ) 209 - 212 2015.01
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
We report 300-GHz-band terahertz wave transmission using radio over fiber and digital coherent detection technologies with high-gain terahertz antenna. It is also discussed possibility of long distance transmission in 300-GHz band based on obtained experimental results.
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Advances of Optical Amplification Technology for Next Generation Optical Switching Networks
SHIRAIWA Masaki, SHINADA Satoshi, PATTNUM Benjamin J., AWAJI Yoshinari, WADA Naoya, MIYAZAWA Takaya, HARAI Hiroaki, KANNO Atsushi, KURI Toshiaki, KAWANISHI Tetsuya
Technical report of IEICE. LQE 114 ( 432 ) 63 - 68 2015.01
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
The novel optical amplifications technology is indispensable for dynamic optical circuit switching and next generation optical packet switching. This paper will discuss some specifications of optical amplifiers to accommodate future wavelength multiplexing as well as time division elastically multiplexing optical networks, and present our approach to the optical amplification technology for the optical packet and optical circuit integrated network that we are developing.
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Optically Millimeter-Wave Beam-Forming Based-on Patch-Antenna Array with Electro-Optic Modulator for Communication and Radar Systems
WIJAYANTO Yusuf Nur, KANNO Atsushi, MURATA Hiroshi, KAWANISHI Tetsuya, OKAMURA Yasuyuki
Technical report of IEICE. LQE 114 ( 432 ) 223 - 228 2015.01
Language：English Publisher：The Institute of Electronics, Information and Communication Engineers
We propose an optically wireless millimeter-wave beam-forming based-on an antenna array with an electro-optic (EO) modulator for applications to communication and radar. An Array of patch-antennas are fabricated on an EO modulator bonded with a low dielectric constant material for receiving wireless millimeter-wave signals and converting the received millimeter-wave to lightwave signals through the Pockels effects of an EO crystal. By using the array structure, high antenna gain and narrow wireless millimeter-wave beam-width can be obtained for effective operation. Furthermore, the beam-forming of wireless millimeter-wave signals can be controlled to certain direction using polarization-reversed methods. The polarization-reversed method with meandering gaps in the metal patch is used, where it has simple structure and easy in realization. In this report, analysis of the optically wireless beam-forming with narrow beam-width (<5 degree) and large beam scanning area (up to 120 degree) for millimeter-wave operations is discussed. The optically millimeter-wave beam-forming can be used for realizing directed wireless communication and scanned millimeter-wave radar systems.
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Effects of Optical Phase Noise and Fiber Dispersion on Performance of LTE-A Signal Transmission over a Seamless Fiber-MMW System
TIEN DAT Pham, KANNO Atsushi, KAWANISHI Tetsuya
114 ( 430 ) 199 - 204 2015.01
Language：English Publisher：The Institute of Electronics, Information and Communication Engineers
Optical phase noise and fiber dispersion induced effects are important impairments that would limit the performance of a seamless fiber-wireless system. In this paper, we experimentally investigate the effects of these impairments on performance of an LTE-A signal transmission over a seamless fiber-millimeter-wave system at 92.5 GHz. To evaluate the effects of optical phase noise, we compare the performance of a modulator-based optical two-tone signal generator using dual-wavelength and single-wavelength with different fiber-delay lengths for data modulation, and an optical heterodyne system using a free-running laser for a local oscillator. For evaluation of fiber dispersion induced effects, different fiber transmission lengths are used for the signal transmission in each case. At the receiver, to avoid the effects of frequency offset and electrical phase noise, a simple direct detection scheme using an envelope detector is used.
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Effects of Optical Phase Noise and Fiber Dispersion on Performance of LTE-A Signal Transmission over a Seamless Fiber-MMW System
TIEN DAT Pham, KANNO Atsushi, KAWANISHI Tetsuya
Technical report of IEICE. LQE 114 ( 432 ) 199 - 204 2015.01
Language：English Publisher：The Institute of Electronics, Information and Communication Engineers
Optical phase noise and fiber dispersion induced effects are important impairments that would limit the performance of a seamless fiber-wireless system. In this paper, we experimentally investigate the effects of these impairments on performance of an LTE-A signal transmission over a seamless fiber-millimeter-wave system at 92.5 GHz. To evaluate the effects of optical phase noise, we compare the performance of a modulator-based optical two-tone signal generator using dual-wavelength and single-wavelength with different fiber-delay lengths for data modulation, and an optical heterodyne system using a free-running laser for a local oscillator. For evaluation of fiber dispersion induced effects, different fiber transmission lengths are used for the signal transmission in each case. At the receiver, to avoid the effects of frequency offset and electrical phase noise, a simple direct detection scheme using an envelope detector is used.
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MIMO-enabled W-Band Mode-Division Multiplexing RoF Transmission over DMGD-compensated FMF link
DIAMANTOPOULOS Nikolaos P., INUDO Shohei, YOSHIDA Yuki, MARUTA Akihiro, KANNO Atsushi, DAT Pham Tien, KAWANISHI Tetsuya, MARUYAMA Ryo, KUWAKI Nobuo, MATSUO Shoichiro, KITAYAMA Ken-ichi
114 ( 430 ) 205 - 208 2015.01
Language：English Publisher：The Institute of Electronics, Information and Communication Engineers
Seamless radio-over-fiber (RoF) transmission of W-Band millimeter-wave signals is a promising technology for high-capacity "last-mile" radio access with increased network resilience to natural disasters. Also, mode-division multiplexing (MDM) utilized by differential modal group delay (DMGD)-compensated few-mode fiber (FMF) links can offer high multiplexing gain with low computational complexity. Here, 10Gbps-order RoF transmission is demonstrated using 92.5 GHz W-Band signals over a wireless path of 2.5-m and a 30-km DMGD-compensated MDM link. 5 and 10 GBaud QPSK and BPSK signals were studied and capacities up to 20Gbps were achieved, when considering 7% forward error correction (FEC) overhead.
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MIMO-enabled W-Band Mode-Division Multiplexing RoF Transmission over DMGD-compensated FMF link
DIAMANTOPOULOS Nikolaos P., INUDO Shohei, YOSHIDA Yuki, MARUTA Akihiro, KANNO Atsushi, DAT Pham Tien, KAWANISHI Tetsuya, MARUYAMA Ryo, KUWAKI Nobuo, MATSUO Shoichiro, KITAYAMA Ken-ichi
Technical report of IEICE. LQE 114 ( 432 ) 205 - 208 2015.01
Language：English Publisher：The Institute of Electronics, Information and Communication Engineers
Seamless radio-over-fiber (RoF) transmission of W-Band millimeter-wave signals is a promising technology for high-capacity "last-mile" radio access with increased network resilience to natural disasters. Also, mode-division multiplexing (MDM) utilized by differential modal group delay (DMGD)-compensated few-mode fiber (FMF) links can offer high multiplexing gain with low computational complexity. Here, 10Gbps-order RoF transmission is demonstrated using 92.5 GHz W-Band signals over a wireless path of 2.5-m and a 30-km DMGD-compensated MDM link. 5 and 10 GBaud QPSK and BPSK signals were studied and capacities up to 20Gbps were achieved, when considering 7% forward error correction (FEC) overhead.
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Optically Millimeter-Wave Beam-Forming Based-on Patch-Antenna Array with Electro-Optic Modulator for Communication and Radar Systems
WIJAYANTO Yusuf Nur, KANNO Atsushi, MURATA Hiroshi, KAWANISHI Tetsuya, OKAMURA Yasuyuki
114 ( 430 ) 223 - 228 2015.01
Language：English Publisher：The Institute of Electronics, Information and Communication Engineers
We propose an optically wireless millimeter-wave beam-forming based-on an antenna array with an electro-optic (EO) modulator for applications to communication and radar. An Array of patch-antennas are fabricated on an EO modulator bonded with a low dielectric constant material for receiving wireless millimeter-wave signals and converting the received millimeter-wave to lightwave signals through the Pockels effects of an EO crystal. By using the array structure, high antenna gain and narrow wireless millimeter-wave beam-width can be obtained for effective operation. Furthermore, the beam-forming of wireless millimeter-wave signals can be controlled to certain direction using polarization-reversed methods. The polarization-reversed method with meandering gaps in the metal patch is used, where it has simple structure and easy in realization. In this report, analysis of the optically wireless beam-forming with narrow beam-width (<5 degree) and large beam scanning area (up to 120 degree) for millimeter-wave operations is discussed. The optically millimeter-wave beam-forming can be used for realizing directed wireless communication and scanned millimeter-wave radar systems.
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Experimental evaluation of frequency fluctuation on millimeter-wave fiber-wireless link for future wired and wireless seamless access network
KANNO Atsushi, TIEN DAT Pham, KURI Toshiaki, KAWANISHI Tetsuya, YOSHIDA Yuki, KITAYAMA Ken-ichi
Technical report of IEICE. OCS 114 ( 403 ) 1 - 5 2015.01
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
Seamless connectivity between an optical fiber network and a radio network can be realized by a radio over fiber technologies. In this photonics-based radio signal generation, optimization of the radio signal quality, particularly in frequency fluctuation, is a key for realization on the system because all the radio waves should be consistent with radio regulations. In the paper, we evaluate the signal quality difference on frequency fluctuations using two signal generation methods in a high-capacity fiber-wireless link.
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Improvement of Disaster Resiliency and Access Technology of Optical Networks : Accommodation of RoF Signals in the Optical Packet and Circuit Integrated Networks
SHIRAIWA Masaki, XU Sugang, AWAJI Yoshinari, WADA Naoya, MIYAZAWA Takaya, HARAI Hiroaki, KANNO Atsushi, KURI Toshiaki, KAWANISHI Tetsuya
114 ( 287 ) 13 - 18 2014.11
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
To increase the total capacity of radio access networks, the introduction of small-cell architectures will be indispensable. By applying analog radio-over-fiber technologies, equipment at the cell site in the small-cell architecture can be simplified. This enables people to offer enriched daily wireless access services over wide areas in a cost-effective way. In case of large disaster, since the demand for wireless access will be very high after disaster, e.g., for safety-confirmation, victim relief, etc., the cost-effective and high-capacity wireless access networks play a significant role in disaster recovery. We have been investigating the analog radio-over-fiber transmission systems which accommodate radio signals over optical fibers in a robust way. In addition, we have also been investigating other technologies, e.g., multi-vendor optical network interconnection technology, flexible wavelength resource reallocation technology, etc. In this paper, we introduce our studies on the optical network technologies from the perspective of disaster resiliency.
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Optical two-tone signal generation using high extinction-ratio modulator integrated with active Y-branch
YAMAGUCHI Yuya, SEKI Kazuki, KOYANO Hiroyuki, KANNO Atsushi, KAWANISHI Tetsuya, IZUTSU Masayuki, NAKAJIMA Hirochika
114 ( 287 ) 25 - 28 2014.11
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
We demonstrated an optical two-tone signal generation using high extinction-ratio modulator with active Y-branch. By using a high extinction-ratio parallel MZ modulator, we generated a frequency quadruple optical two-tone signal. The spurious suppression ratio of the measured signal was 27dB at lOGHz modulation.
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Numerical Study of Millimeter-Wave Signal Generation using Optical Frequency Locked-Loop and Optical Frequency Comb Technologies
MATSUMOTO Ryo, OBA Jinsei, KANNO Atsushi, KAWANISHI Tetsuya, SOTOBAYASHI Hideyuki
114 ( 287 ) 29 - 32 2014.11
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
To meet the demand of high-speed wireless communications, higher frequency radio such as a millimeter-wave and terahertz wave bands has been attracting attention. For generation of these high-frequency carriers, an optical technology is one of the promising candidates. However, using free-running lasers, resultant frequency fluctuation provided by the beat note between two optical components is a significant issue, hi this paper, we propose suppression technique of the frequency fluctuation generated by free-running lasers using an optical frequency locked loop (OFLL) technique configured with a feed-forward control. In addition, possibility of a millimeter-wave signal generation using an optical frequency comb (OFC) is also discussed.
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Study of high-capacity transmission to high-speed vehicles by radio-over-fiber technologies
KAWANISHI Tetsuya, TIEN DAT Pham, YAMAMOTO Naokatsu, KANNO Atsushi
114 ( 287 ) 33 - 36 2014.11
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
High-speed signal transport technology to high-speed vehicles with a capacity of several Gbit/s is discussed. A key technology is comprised of millimeter-wave radio access technology and radio-over-fiber-based optical network between the millimeter-wave radio access unit and central office. The technology can realize adaptive signal transport to the vehicle with tracking the location of the vehicle by the control information at the central office. It is also discussed with high-speed and high-capacity signal transport without any signal processing such as a media conversion at the radio access unit.
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Invited Talk : R&D Trends of the terahertz technology : Form non-destructive testing to wireless communications
HOSAKO Iwao, SEKINE Norihiko, KANNO Atsushi, KAWANISHI Tetsuya, KASAMATSU Akifumi
IEICE technical report. Electron devices 114 ( 262 ) 39 - 41 2014.10
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
This article reports the recent trends of terahertz technology research and development for a wide variety of applications.
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Development Trend and Activity of Vacuum Electronics in THz Band
YOSHIDA Mitsuru, OKAMOTO Koji, MASUDA Norio, MATSUOKA Junichi, SEKINE Norihiko, KANNO Atsushi, KAWANISHI Tetsuya, Hosako Iwao
IEICE technical report. Electron devices 114 ( 262 ) 43 - 47 2014.10
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
The terahertz wave radiation has been studied in astronomy, analytical science and limited field. The applicability in the various fields expects more industry, medical treatment, biotechnology and security. However, the terahertz region is called the terahertz gap, around the gorge of microwave devices and photonic devices. The device development at this region is made one problem for terahertz technology. Today, We report the development trend and our activity in this region from the side of the vacuum electronics device.
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C-3-5 Linear modulation of optical amplitude using cascade Mach-Zehnder modulators
Koyano Hiroyuki, Seki Kazuki, Yamaguchi Yuya, Kanno Atsushi, Kawanishi Tetsuya, Izutsu Masayuki, Nakajima Hirochika
Proceedings of the Society Conference of IEICE 2014 ( 1 ) 102 - 102 2014.09
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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C-3-27 Operation Tolerance for High Quality Two-tone Lightwave Generation with Cascaded Mach-Zehnder Modulators
Seki Kazuki, Koyano Hiroyuki, Yamaguchi Yuya, Kanno Atsushi, Kawanishi Tetsuya, Izutsu Masayuki, Nakajima Hirochika
Proceedings of the Society Conference of IEICE 2014 ( 1 ) 124 - 124 2014.09
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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B-10-43 20 Gbit/s QPSK transmission over 10 km-long holey fiber in 1.3 μm waveband
Yagi Fumiya, Murano Akihiro, Kanno Atsushi, Yamamoto Naokatsu, Akahane Kouichi, Kawanishi Tetsuya, Sotobayashi Hideyuki
Proceedings of the Society Conference of IEICE 2014 ( 2 ) 217 - 217 2014.09
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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De-multiplexer for Wavelength-Division-Multiplexed W-band Frequency-Modulated Continuous-Wave Signal Distribution Systems
KURI Toshiaki, KANNO Atsushi, KAWANISHI Tetsuya
Technical report of IEICE. OPE 114 ( 142 ) 41 - 46 2014.07
Language：English Publisher：The Institute of Electronics, Information and Communication Engineers
The characteristics of a newly-developed de-multiplexer for wavelength-division-multiplexed (WDM) radio-over-fiber (RoF) signal, which is applicable for frequency-modulated continuous-wave (FM-CW) signal distribution in radar systems, is investigated and the de-multiplexing of 4-channel WDM 32-GHz-band FM-CW RoF signal is demonstrated.
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De-multiplexer for Wavelength-Division-Multiplexed W-band Frequency-Modulated Continuous-Wave Signal Distribution Systems
KURI Toshiaki, KANNO Atsushi, KAWANISHI Tetsuya
IEICE technical report. Microwaves 114 ( 141 ) 41 - 46 2014.07
Language：English Publisher：The Institute of Electronics, Information and Communication Engineers
The characteristics of a newly-developed de-multiplexer for wavelength-division-multiplexed (WDM) radio-over-fiber (RoF) signal, which is applicable for frequency-modulated continuous-wave (FM-CW) signal distribution in radar systems, is investigated and the de-multiplexing of 4-channel WDM 32-GHz-band FM-CW RoF signal is demonstrated.
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Proposals of "Radio over X" and "Modulation-Symbol-Format Maintaining Transmission" for Next Generation Mobile Services
KURI Toshiaki, KANNO Atsushi, KAWANISHI Tetsuya, OGAWA Hiroyo
IEICE technical report. Communication systems 114 ( 119 ) 1 - 6 2014.07
Language：English Publisher：The Institute of Electronics, Information and Communication Engineers
Information data being transmitted must be routed through various physical transmission paths with various physical transmission mediums. Therefore, it seems natural that a radio system is also connected to various other transmission systems. In radio services with a lot of radio access points, such as mobile services, the collaboration of the other transmission system will be unavoidable. In this paper, a basic element common to the purpose of various transmission systems collaborated with radio links on a physical layer, which called "Radio over X (RoX)", is proposed. Then, a new scheme of an efficient transmission on a physical layer, which is called "modulation-symbol-format maintaining transmission", is also proposed. In these proposals, the functional definition of a media conversion is a key. Moreover, as examples of application to next generation mobile services, some experimental demonstrations are shown.
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Performance Evaluation of a Burst-Mode EDFA in a Packetized Radio-over-Fiber Signal Transmission System
SHIRAIWA Masaki, KANNO Atsushi, AWAJI Yoshinari, WADA Naoya, KAWANISHI Tetsuya
114 ( 109 ) 31 - 34 2014.06
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
In order to correspond to drastically increase in mobile data traffic, analog radio-on fiber (RoF) has been studied as a next-generation transmission system. We investigated the performance of a burst-mode erbium-doped fiber amplifier that has high linearity for LTE format packetized RoF signals. We observed a low error vector magnitude value over a wide optical input power range compared with the conventional EDFA.
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Digital Optical Phase-Locked Loop for Signal processing of Radio-over-Fiber signals
SAKAMOTO Takahide, KANNO Atsushi, KURI Toshiaki, YAMAMOTO Naokatsu, KAWANISHI Tetsuya
114 ( 14 ) 51 - 55 2014.04
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
In optical fiber communication systems, demands for real-time coherent detection is rapidly raised. To do that, optical phase-locking technique is required. Digital coherent receiver is a powerful technique for detecting PSK or QAM signals. However, the receiver requires high-speed digital signal processor clocked at the symbol rate or higher rate. As an alternative way, we have demonstrated real-time coherent detection based on digital optical phase-locked loop. Introducing experimental demonstration of high-speed BPSK detection, we discuss how we can apply the DOPLL technology to microwave photonic radio-over fiber systems.
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W-band high-speed and broadband FM-CW signal generation using optical frequency quadrupling technique
KANNO Atsushi, KAWANISHI Tetsuya
114 ( 14 ) 17 - 20 2014.04
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
We configure and demonstrate broadband signal generation at 90-GHz band using optical modulation technologies. The frequency up-chirp signal is applicable for millimeter-wave radar system. Observed degradation of a phase noise is followed by a theoretical estimated value, so the optical frequency quadrupler based on the optical modulation realizes a broadband frequency quadrupler with capability of millimeter-wave signal with resulting frequency-sweep speed of 35 PHz/s. The quadrupler is capable for high precision radar system at the millimeter-wave band.
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C-3-33 Optical Intensity and Phase Changes by Directional Coupler Type Active Y-branch
YAMAGUCHI Yuya, KOYANO Hiroyuki, NAKAJIMA Shinya, KANNO Atsushi, KAWANISHI Tetsuya, IZUTSU Masayuki, NAKAJIMA Hirochika
Proceedings of the IEICE General Conference 2014 ( 1 ) 188 - 188 2014.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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C-14-19 Development of high conversion gain analogue photoreceiver
Umezawa Toshimasa, Akahane Kouichi, Yamamoto Naokatsu, Dat Pham Tien, Kanno Atsushi, Kawanishi Tetsuya
Proceedings of the IEICE General Conference 2014 ( 1 ) 289 - 289 2014.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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C-3-20 Low Driving Voltage LiNbO_3 Optical Modulator using Phase Matching by Folded Structure
IIMURA Tetsuhito, NAKAJIMA Shinya, KANNO Atsushi, KAWANISHI Tetsuya, NAKAJIMA Hirochika, IZUTSU Masayuki
Proceedings of the IEICE General Conference 2014 ( 1 ) 175 - 175 2014.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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C-3-21 Improvement of the Suppression of the Optical Harmonic by Optical SSB-SC Modulation with Third-order Harmonic
NAKAO Ryota, YAMAGUCHI Yuya, KANNO Atsushi, KAWANISHI Tetsuya, IZUTSU Masayuki, NAKAJIMA Hirochika
Proceedings of the IEICE General Conference 2014 ( 1 ) 176 - 176 2014.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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B-10-26 Homodyne detection experiment of QPSK signals using a Quantum dot laser diode at the 1.3-μm wavelength region
Kurata Yasuaki, Tomishige Kazunari, Kanno Atsushi, Yamamoto Naokatsu, Akahane Kouichi, Kawanishi Tetsuya, Sotobayashi Hiduyuki
Proceedings of the IEICE General Conference 2014 ( 2 ) 394 - 394 2014.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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B-10-24 Analysis of Optical-Electrical Hybrid Signal Equalization for polarization division multiplexed signal
Maruyama Shinya, Tomishige Kazunari, Sotobayashi Hideyuki, Kanno Atsushi, Kawanishi Tetsuya
Proceedings of the IEICE General Conference 2014 ( 2 ) 392 - 392 2014.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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B-10-25 Analysis of QPSK-homodyne transmission using a single dual-drive mach-zehnder modulator in 1-μm region
Yagi Fumiya, saito Kei, Kanno Atsushi, Yamamoto Naokatsu, Akahane Kouichi, Kawanishi Tetsuya, Sotobayashi Hideyuki
Proceedings of the IEICE General Conference 2014 ( 2 ) 393 - 393 2014.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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Quantum dot photonic devices for realizing T+O band photonic network system
YAMAMOTO Naokatsu, AKAHANE Kouichi, KANNO Atsushi, UMEZAWA Toshimasa, KAWANISHI Tetsuya, SOTOBAYASHI Hideyuki, TAKAI Hiroshi
113 ( 396 ) 293 - 298 2014.01
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
Pioneering optical frequency resources is essential to enhance a photonic network capacity. Currently, we have focused on a use of a 1.0-1.26μm wavelength band (Thousand-band: T-band) and 1.26-1.32μm wavelength band (O-band) as the novel optical frequency resources for the optical communications. Semiconductor quantum dot (QD) structure is expected to become attractive optical gain material for high-performance and ultra-broadband photonic ICT devices used in the T+O band. In this paper, we propose some technique such as sandwiched sub-nano separator (SSNS) to obtain a high-quality and broadband QD optical gain. We successfully develop and characterize a wavelength tunable QD laser, QD optical frequency comb laser (QD-CML), and high-frequency optical mode-locked QD laser.
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Digital Optical Phase-Locked Loop for High-speed Optical Coherent Detection
SAKAMOTO Takahide, KANNO Atsushi, KAWANISHI Tetsuya
113 ( 397 ) 277 - 280 2014.01
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
Digital coherent receiver is a powerful technique for detecting PSK or QAM signals. However, the receiver requires high-speed digital signal processor clocked at the symbol rate or higher rate. We demonstrate real-time homodyne demodulation of a 40-Gb/s BPSK signal by using novel digital optical phase-locked loop with a Costas-loop structure. The optical carrier is locally recovered in the receiver side with a slow-speed digital signal processor employing bandwidth-enhanced samplers.
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Development of high speed photodetector for millimeter wave Radio over Fiber system
UMEZAWA Toshimasa, AKAHANE Koichi, KANNO Atsushi, KAWANISHI Tetsuya
IEICE technical report. Electron devices 113 ( 357 ) 25 - 28 2013.12
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
To realize foreign object debris imaging alert system in crowded airports using 90GHz radio over fiber technologies, high speed and high SNR optical modulator, high speed photodetector with high conversion would be one of key devices. We have designed and developed a 30GHz photodetector with high OE conversion using LC resonant peaking technique in frequency response, owing to combining with a RF tripler. The OE conversion gain of 1000V/W at 33GHz could be achieved with a low noise amplifier. The design and the properties will be discussed.
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Application of InAs based quantum dot layer for high speed photo-detection device
UMEZAWA Toshimasa, AKAHANE Kouji, KANNO Atsushi, KAWANISHI Tetsuya
Technical report of IEICE. OPE 113 ( 263 ) 95 - 98 2013.10
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
For an application of quantum dot photo-detection devices, we have proposed and demonstrated new high speed photodiodes using In As based quantum dots absorption layer. To compare the performances with conventional In GaAs based photodiode, low dark current, high absorption coefficient and avalanche multiplication effect were observed in the new devices. The 3dB bandwidth at low bias was expected as approximately 50GHz, and the Gain Bandwidth (GB) products in avalanche multiplication region would be 150GHz to 200GHz.
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Application of InAs based quantum dot layer for high speed photo-detection device
UMEZAWA Toshimasa, AKAHANE Kouji, KANNO Atsushi, KAWANISHI Tetsuya
Technical report of IEICE. LQE 113 ( 264 ) 95 - 98 2013.10
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
For an application of quantum dot photo-detection devices, we have proposed and demonstrated new high speed photodiodes using In As based quantum dots absorption layer. To compare the performances with conventional In GaAs based photodiode, low dark current, high absorption coefficient and avalanche multiplication effect were observed in the new devices. The 3dB bandwidth at low bias was expected as approximately 50GHz, and the Gain Bandwidth (GB) products in avalanche multiplication region would be 150GHz to 200GHz.
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EO-OE conversion technologies for 90-GHz radio over fiber systems
Umezawa Toshimasa, Akahane Kouichi, Kanno Atsushi, Kawanishi Tetsuya
Proceedings of the Society Conference of IEICE 2013 ( 1 ) 261 - 261 2013.09
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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Analysis of Optical-Electrical Hybrid Signal Equalizer for High Speed optical Signal
Tomishige Kazunari, Sotobayashi Hideyuki, Kanno Atsushi, Kawanishi Tetsuya
Proceedings of the Society Conference of IEICE 2013 ( 2 ) 266 - 266 2013.09
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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W-band FM-CW signal generation using optical frequency quadrupler
Kanno Atsushi, Kawanishi Tetsuya
Proceedings of the Society Conference of IEICE 2013 ( 1 ) 260 - 260 2013.09
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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Millimeter-wave multi-band radio-over-fiber transmission system based on high-speed optical modulator
KANNO Atsushi, OGAWA Hiroyo, KAWANISHI Tetsuya, SHIBAGAKI Nobuhiko, HANYU Hiroshi
Technical report of IEICE. OPE 113 ( 142 ) 151 - 154 2013.07
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
We discuss a multi-band radio-over-fiber (RoF) transmission system at a millimeter-wave band, such as 40- and 60-GHz bands, using high-speed optical modulator. Combination of the broadband optical modulator and an optical filter can form a single-sideband optical signal to transmit the millimeter-wave signal over a long optical fiber. Possibility of the millimeter-wave signal transmission without distortions is also discussed with a result of observed spurious-free dynamic range of the RoF system.
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Fabrication of semiconductor optical amplifier using highly stacked InAs quantum dot
AKAHANE Kouichi, YAMAMOTO Naokatsu, UMEZAWA Toshimasa, KANNO Atsushi, KAWANISHI Tetsuya
2013 ( 27 ) 7 - 10 2013.06
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12.5GHz repetition rate, pico-second pulse generation in 1μm region by using Mach-Zehnder Modulator and its application
MATSUMOTO Ryo, NISHI Ryuji, MOROHASHI Isao, YAMAMOTO Naokatsu, SAKAMOTO Takahide, KANNO Atushi, KAWANISHI Tetsuya, SEKINE Norihiko, HOSAKO Iwao, SOTOBAYASHI Hideyuki
Technical report of IEICE. OFT 113 ( 55 ) 15 - 18 2013.05
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
In the optical communication network, the wavebands in the C-band (1530〜1565- nm) and the L-band (1565-1625- nm) have been used. To construct the optical communication network in 1.0μm-band for expanding the available wavelength bandwidth, we developed the optical source and transport system. We demonstrate high repetition rate, pico-second pulse-train generation in the 1-μm region by using Mach-Zehnder Modulator. We also evaluate the optical source of wavelength-division-mutiplexing transmission system using the proposed pulse source.
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Two-mode lasing of wavelength tunable quantum dot laser
Akahane Kouichi, Yamamoto Naokatsu, Kanno Atsushi, Inagaki Keizo, Umezawa Toshimasa, Kawanishi Tetsuya, Endo Takashi, Tomomatsu Yasunori, Yamanoi Toshio
Technical report of IEICE. LQE 113 ( 49 ) 49 - 52 2013.05
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
A two-wavelength emission laser can be used to generate millimeter and terahertz waves by irradiating high speed photodiodes or nonlinear crystals. Recently, electro-magnetic waves at such frequencies have become important for high speed wireless communication and accurate sensing. The external cavity wavelength tunable quantum-dot (QD) laser is a candidate for fabrication of a two-wavelength emission laser because of its properties such as a simple structure, wide range of wavelength tunability, narrow linewidth, and emission wavelength stability. We have developed a QD wavelength tunable laser with a narrow linewidth and stable emission wavelength. In this study, we achieved two-wavelength emissions in the QD wavelength tunable laser by changing the external cavity configuration.
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CI-3-6 High-Speed W-band Radio Communication Based on Radio-over-fiber Technology
Kanno Atsushi, Kawanishi Tetsuya
Proceedings of the IEICE General Conference 2013 ( 1 ) "SS - 26"-"SS-27" 2013.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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B-13-6 Transmission of wave-band division multiplexed signals over a holey fiberin the T-and O-band
Yagi Humiya, Kurata Yasuaki, Yamamoto Naokatsu, Akahane Kouichi, Kanno Atsushi, Kawanishi Tetsuya, Yoshioka Yuki, Takai Hiroshi, Sotobayashi Hideyuki
Proceedings of the IEICE General Conference 2013 ( 2 ) 471 - 471 2013.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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C-14-15 O-Eand E-O direct conversion for 25-GHz-band RoF signal
Hasobe Shiori, Yamanaka Ryuta, Kanno Atsushi, Kawanishi Tetsuya, Sotobayashi Hideyuki
Proceedings of the IEICE General Conference 2013 ( 1 ) 295 - 295 2013.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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C-14-16 Highly-frequency-stabilized millimeter-wave optical two-tone signal generation using optical phaselocked loop
Yamanaka Ryuta, Jin Kazuki, Sotobayashi Hideyuki, Kamo Atsushi, Kawanishi Tetsuya
Proceedings of the IEICE General Conference 2013 ( 1 ) 296 - 296 2013.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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C-3-36 Precision measurement ofchirp parameter of modulators for optical frequency comb generation
yamada Yuki, Yamaguchi Yuya, Izutsu Masayuki, Kanno Atsushi, Kawanishi Tetsuya, Nakajima Hirochika
Proceedings of the IEICE General Conference 2013 ( 1 ) 196 - 196 2013.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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C-3-37 Bias control for high eXtinction ratio LN modulator with backward light
Tanaka Masaki, Kanno Atsushi, Kawanishi etsuya, Izutsui Masayuki, Nakajima Hirochika
Proceedings of the IEICE General Conference 2013 ( 1 ) 197 - 197 2013.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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Invited Talk : Report on MWP2012
Shoji Yozo, Morohashi Isao, Hisatake Shintaro, Kanno Atsushi
Technical report of IEICE. LQE 112 ( 400 ) 115 - 119 2013.01
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
2012 International Topical Meeting on Microwave Photonics (MWP2012) was held from Sep.11 to Sep.14, 2012 at Space Research and Technology Centre of the European Space Agency (ESA/ESTEC). This report briefly summarizes the trend of the presentations in the MWP2012.
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Self-homodyne coherent detection using a 19-core fiber
PUTTNAM BEN, DELGADO-MENDINUETA JOSE-MANUEL, LUIS RUBEN S, SAKAGUCHI JUN, KLAUS WERNER, AWAJI YOSHINARI, WADA NAOYA, KANNO ATSUSHI, KAWANISHI TETSUYA
電気学会電磁界理論研究会資料 EMT-13 ( 1-17.20-59 ) 295 - 298 2013.01
Language：English Publisher：The Institute of Electronics, Information and Communication Engineers
We demonstrate a 105.1Tb/s self-homodyne transmission system using low-cost DFB lasers with dynamic path length adjustment and reduced DSP requirement in a 19-core-fiber with each signal core carrying 125x25Gbaud QPSK signals on a 50GHz grid.
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In-Service Path-Length Alignment for Self-Homodyne Coherent-Detection-Spatial Division Multiplexing Systems
LUIS RUBEN S, PUTTNAM BEN, DELGADO-MENDINUETA JOSE-MANUEL, SAKAGUCHI JUN, KLAUS WERNER, AWAJI YOSHINARI, WADA NAOYA, KANNO ATSUSHI, KAWANISHI TETSUYA
電気学会電磁界理論研究会資料 EMT-13 ( 1-17.20-59 ) 247 - 250 2013.01
Language：English Publisher：The Institute of Electronics, Information and Communication Engineers
This work proposes a method for the alignment of the signal and pilot tone paths in self-homodyne coherent-detection systems to achieve phase noise cancelation without the need for traffic interruption. The method is demonstrated on a spatial division multiplexing transmission system using a 10.1 km 19-core multi-core fiber. It is shown that sub-centimeter resolution is achievable with penalties under 0.5 dB.
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Report on MWP2012
Shoji Yozo, Morohashi Isao, Hisatake Shintaro, Kanno Atsushi
Technical report of IEICE. OPE 112 ( 399 ) 115 - 119 2013.01
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
2012 International Topical Meeting on Microwave Photonics (MWP2012) was held from Sep.11 to Sep.14, 2012 at Space Research and Technology Centre of the European Space Agency (ESA/ESTEC). This report briefly summarizes the trend of the presentations in the MWP2012.
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Precise chirp parameter measurement of asymmetric Mach-Zehnder modulators with active Y-branch
Yuya Yamaguchi, Yuki Yamada, Atsushi Kanno, Tetsuya Kawanishi, Masayuki Izutsu, Hirochika Nakajima
IEICE Electronics Express 10 ( 12 ) 2013
Language：English Publishing type：Rapid communication, short report, research note, etc. (scientific journal)
For precise chirp parameter control, we investigated xcut LiNbO3 single-drive asymmetric Mach-Zehnder modulators with extinction-ratio adjustable active Y-branch structures, which can enhance on-off extinction ratio. The chirp parameter of the modulated output was precisely measured by using high extinction ratio operation. Experimental results show that it is possible to fabricate modulators with desired chirp parameters. © IEICE 2013.
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Investigation of Receiver DSP Carrier Phase Estimation Rate for Self-homodyne Space-division Multiplexing Communication Systems Reviewed
Jose Manuel Delgado Mendinueta, Benjamin J. Puttnam, Jun Sakaguchi, Ruben S. Luis, Werner Klaus, Yoshinari Awaji, Naoya Wada, Atsushi Kanno, Tetsuya Kawanishi
2013 OPTICAL FIBER COMMUNICATION CONFERENCE AND EXPOSITION AND THE NATIONAL FIBER OPTIC ENGINEERS CONFERENCE (OFC/NFOEC) EMT-13 ( 1-17.20-59 ) 299 - 302 2013
Language：English Publisher：IEEE
We demonstrate a significant reduction of the required carrier-phase estimation rate for self-homodyne multi-core fiber systems by analyzing experimental data with implementation-constrained digital signal processing, which could enable an improvement on receiver energy consumption.
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A Chirp Measurement Method for Integrated Parallel Mach-Zehnder-Modulators
PHAM TIEN DAT, KANNO Atsushi, INAGAKI Keizo, KAWANISHI Tetsuya
112 ( 280 ) 17 - 21 2012.11
Language：English Publisher：The Institute of Electronics, Information and Communication Engineers
In this paper, we propose a method to measure total chirp of integrated parallel Mach-Zehnder-type modulators by analyzing optical spectrum components. The method can be applied to characterize the modulators without any restriction on extinction ratio and permit to evaluate the chirp parameter at a specific frequency. An experiment measurement is also conducted to demonstrate the proposed method for an optical FSK modulator. The obtained result reveals the effectiveness of this chirp measurement method.
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25-GHz-Band RoF Signal Generation by Optical Technology using DP-QPSK modulator
YAMANAKA RYUTA, FUJITA TAKA, HASOBE SHIORI, KANNO ATSUSHI, KAWANISHI TETSUYA, SOTOBAYASHI HIDEYUKI, SOTOBAYASHI HIDEYUKI
電子情報通信学会技術研究報告 112 ( 280(MWP2012 46-51) ) 23-26 - 26 2012.11
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
Dual-polarization Quadruture Phase-Shift Keying (DP-QPSK) modulator can simply generate Radio-over-Fiber (RoF) signal. DP-QPSK modulator was developed for 100 Gigabit Ethernet (GbE) and consists two IQ modulator. It is utilized for generation two QPSK signal for each polarization. In this study, we propose that one polarization is worked as RoF-LO signal using single sideband suppressed carrier modulation, and other polarization for QPSK modulation. This technique can generate 25GHz 5Gbps QPSK RoF signal.
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光で作る超高速無線信号[後編]—無線伝送技術—
菅野敦史, 川西哲也
自動車技術 66 ( 9 ) 100-101 - 101 2012.09
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C-14-5 Demonstration of U-band frequency-modulated continuous-wave radar system using ultrafast and broadband frequency chirp signal
Yamanaka Ryuta, Tajima Naoyuki, Sotobayashi Hideyuki, Kanno Atsushi, Kawanishi Tetsuya
Proceedings of the Society Conference of IEICE 2012 ( 1 ) 245 - 245 2012.08
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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B-10-44 Analysis of 107 Gb/s NRZ-DBPSK Signal Generation Using Optical Equalizer
Tomishige Kazunari, Sotobayashi Hideyuki, Kanno Atsushi, Kawanishi Tetsuya
Proceedings of the Society Conference of IEICE 2012 ( 2 ) 226 - 226 2012.08
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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アクティブY分岐MZ型LiNbO<sub>3</sub>変調器の高消光比化に向けた導波路構造
山口祐也, 中島慎也, 菅野敦史, 川西哲也, 中島啓幾
電子情報通信学会大会講演論文集 2012 ( 1 ) 169 - 169 2012.08
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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QPSK RoF radio using optical heterodyne technique with free running lasers
KANNO Atsushi, KURI Toshiaki, HOSAKO Iwao, KAWANISHI Tetsuya, YASUMURA Yoshihiro, YOSHIDA Yuki, KITAYAMA Ken-ichi
2012 ( 76 ) 115 - 118 2012.07
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非同期レーザを用いる光ヘテロダインによるQPSK RoF無線 (マイクロ波・ミリ波フォトニクス)
菅野 敦史, 久利 敏明, 寶迫 巌
112 ( 158 ) 115 - 118 2012.07
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非同期レーザを用いる光ヘテロダインによるQPSK RoF無線 (マイクロ波)
菅野 敦史, 久利 敏明, 寶迫 巌
112 ( 155 ) 115 - 118 2012.07
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Ultra High-speed Wireless Signals Generated by Photonics : Lightwave Modulation
KAWANISHI Tetsuya, Atsushi Kanno
66 ( 7 ) 88 - 89 2012.07
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C-14-5 Analysis of 100 Gb/s NRZ-DBPSK Signal Generation Using Conventional Devices
Tomishige Kazunari, Sotobayashi Hideyuki, Kanno Atsushi, Kawanishi Tetsuya
Proceedings of the IEICE General Conference 2012 ( 1 ) 286 - 286 2012.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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B-13-22 Estimation of wavelength division multiplexed holey fiber transmission in the novel T-band
Omigawa Yu, Yamamoto Naokatsu, Kanno Atsushi, Kawanishi Tetsuya, Kurata Yasuaki, Sotobayashi Hideyuki
Proceedings of the IEICE General Conference 2012 ( 2 ) 526 - 526 2012.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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Invited Talk : Report on MWP2011
OSHIBA Saeko, KANNO Atsushi, HISATAKE Shintaro
111 ( 412 ) 115 - 120 2012.01
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
2011 International Topical Meeting on Microwave Photonics jointly held with 2011 Asia Pacific Microwave Photonics (MWP2011/APMP2011) was held in Furama Riverfront Hotel, Singapore, 18-21 Oct. 2011. In this report, the presentations on the MWP2011 were briefly summarized.
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Report on MWP2011
OSHIBA Saeko, KANNO Atsushi, HISATAKE Shintaro
Technical report of IEICE. LQE 2012 ( 1 ) 115 - 120 2012.01
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
2011 International Topical Meeting on Microwave Photonics jointly held with 2011 Asia Pacific Microwave Photonics (MWP2011/APMP2011) was held in Furama Riverfront Hotel, Singapore, 18-21 Oct. 2011. In this report, the presentations on the MWP2011 were briefly summarized.
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Report on MWP2011
OSHIBA Saeko, KANNO Atsushi, HISATAKE Shintaro
Technical report of IEICE. LQE 111 ( 414 ) 115 - 120 2012.01
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
2011 International Topical Meeting on Microwave Photonics jointly held with 2011 Asia Pacific Microwave Photonics (MWP2011/APMP2011) was held in Furama Riverfront Hotel, Singapore, 18-21 Oct. 2011. In this report, the presentations on the MWP2011 were briefly summarized.
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Polarization-division-multiplexed 4×10-Gbps simultaneous transmissions in T-band and C-bands over a holey fiber
OMIGAWA Yu, YAMAMOTO Naokatsu, KANNO Atsushi, KAWANISHI Tetsuya, KURATA Yasuaki, SOTOBAYASHI Hideyuki
Technical report of IEICE. OFT 111 ( 381 ) 33 - 36 2012.01
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
The ever-increasing demand for high data transmission capacities has necessitated the use of alternative wavebands and the development of methods for enhancing the transmission capacities of existing photonic networks. Polarization-division-multiplexing (PDM) and wavelength-division-multiplexing (WDM) are essential techniques for enhancing the capacity of photonic networks and facilitating the efficient use of optical frequency resources. We constructed the ultra-broadband PDM and WDM photonic transport system in the T-band (Thousand-band, 1000〜1260-nm) and C-bands (Conventional-band, 1530〜...
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W-band High-speed Wireless Transmission using RoF Technology(Invited talk)
KANNO Atsushi, KURI Toshiaki, HOSAKO Iwao, KAWANISHI Tetsuya, YOSHIDA Yuki, YASUMURA Yoshihiro, KITAYAMA Ken-ichi
IEICE technical report. Electron devices 111 ( 338 ) 25 - 29 2011.12
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
We discuss a concept of a coherent optical/wireless seamless network and W-band high-speed wireless transmission technique using RoF technology and optical digital coherent detection technique. Multi-level modulation/demodulation and photonic direct up-conversion technique can provide high-speed and low delay transmission of optical and wireless shared signals.
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W-band High-speed Wireless Transmission using RoF Technology
KANNO ATSUSHI, KURI TOSHIAKI, HOSAKO IWAO, KAWANISHI TETSUYA, YOSHIDA YUKI, YASUMURA YOSHIHIRO, KITAYAMA KEN'ICHI
電子情報通信学会技術研究報告 111 ( 338(ED2011 100-118) ) 25-29 - 29 2011.12
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
We discuss a concept of a coherent optical/wireless seamless network and W-band high-speed wireless transmission technique using RoF technology and optical digital coherent detection technique. Multi-level modulation/demodulation and photonic direct up-conversion technique can provide high-speed and low delay transmission of optical and wireless shared signals.
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C-3-2 Picosecond pulse generation in the 1μm region by using optical modulator
Nishi Ryuji, Morohashi Isao, Yamamoto Naokatsu, Sakamoto Takahide, Kanno Atsushi, Kawanishi Tetsuya, Sekine Norihiko, Hosaka Iwao, Sotobayashi Hideyuki
Proceedings of the Society Conference of IEICE 2011 ( 1 ) 124 - 124 2011.08
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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C-14-12 W-band 10-Gbaud QPSK RoF and its free-space transmission
Kanno Atsushi, Inagaki Keizo, Morohashi Isao, Kuri Toshiaki, Hosaka Isao, Kawanishi Tetsuya, Yoshida Yuki, Yasumura Yoshihiro, Kitayama Ken-ichi
Proceedings of the Society Conference of IEICE 2011 ( 1 ) 263 - 263 2011.08
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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多値高速変調デバイス技術
菅野敦史, 坂本高秀, 諸橋功, 川西哲也
応用物理学会学術講演会講演予稿集(CD−ROM) 72nd ROMBUNNO.29P-ZD-3 2011.08
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Picosecond pulse generation in the 1.MU.m region by using optical comb generator
NISHI RYUJI, MOROHASHI ISAO, YAMAMOTO NAOKATSU, SAKAMOTO TAKAHIDE, KANNO ATSUSHI, KAWANISHI TETSUYA, SEKINE NORIHIKO, HOSAKO IWAO, SOTOBAYASHI HIDEYUKI
電気学会電磁界理論研究会資料 EMT-11 ( 57-65.67-105 ) 163-166 - 166 2011.07
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20-Gb/s W-band wireless transmission using radio-over-fiber technique
KANNO Atsushi, INAGAKI Keizo, MOROHASHI Isao, SAKAMOTO Takahide, KURI Toshiaki, HOSAKO Iwao, KAWANISHI Tetsuya, YOSHIDA Yuki, KITAYAMA Ken-ichi
2011 ( 57 ) 51 - 54 2011.07
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Picosecond pulse generation in the 1 μm region by using optical comb generator
Nishi Ryuji, Morohashi Isao, Yamamoto Naokatsu, Sakamoto Takahide, Kanno Atsushi, Kawanishi Tetsuya, Sekine Norihiko, Hosako Iwao, Sotobayashi Hideyuki
IEICE technical report 111 ( 150 ) 163 - 166 2011.07
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
Purpose of this experiment is generating picosecond pulse in the 1 μm region where expected as a new wave length range. Our pulse generation system uses MaclrZehnder-modulation-based flat comb (MZ-FCG). Because MZ-FCG has simple configuration and high controllability. Continuous wave (CW) light led to the MZ-FCG driven by two radio frequency sinusoidal signal. And MZ-FCG modulated CW light to the ultra flat comb signal. In time domain we can observe the ultra flat comb as picosecond pulse. By this system we succeed to generate lO.lps-width and repetition rate of 12.5GHz at 1060nm wave-length .
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20-Gb/s W-band wireless transmission using radio-over-fiber technique
KANNO Atsushi, INAGAKI Keizo, MOROHASHI Isao, SAKAMOTO Takahide, KURI Toshiaki, HOSAKO Iwao, KAWANISHI Tetsuya, YOSHIDA Yuki, KITAYAMA Ken-ichi
IEICE technical report 111 ( 150 ) 57 - 60 2011.07
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
We demonstrate 20 Gb/s W-band QPSK transmission over the air. Optically synthesized 20 Gb/s QPSK signal with RoF technique is converted to the radio signal using direct optical upconversion technique with a high-speed photodetector. Transmitted W-band radio signal was detected and demodulated with a W-band digital receiver. The observed bit error rates was achieved 10〜6 with a distance of 30 mm.
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Polarization Division Multiplexed 2×10-Gbps Optical Data Transmissions in T-waveband with Holey Fiber Photonic Transport System
Omigawa Yu, Kinoshita Yuta, Yamamoto Naokatsu, Kanno Atsushi, Akahane Kouichi, Kawanishi Tetsuya, Sotobayashi Hideyuki
Technical report of IEICE. OCS 111 ( 122 ) 35 - 38 2011.07
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
The ever-growing demand for high data transmission capacities has created a need for the use of alternative wavebands and the development of methods for enhancing the transmission capacities of photonic networks. We recently focused on a use of a 1.0-μm waveband as namely a T-band (Thousand-band) to pioneer ultra-broad optical frequency resources for the optical communications. In this paper, error-free polarization division multiplexed (PDM) 10-Gbps × 2-PDM transmissions over a 3.7-km holey fiber in the T-band is successfully demonstrated for the first time.
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16 QAM Generation by Angular Superposition of Polarization Using Polarization-Multiplexing QPSK Modulator
MOROHASHI Isao, SAKAMOTO Takahide, SUDO Masaaki, KANNO Atsushi, CHIBA Akito, ICHIKAWA Junichiro, HOSAKO Iwao, KAWANISHI Tetsuya
Technical report of IEICE. OCS 111 ( 122 ) 63 - 66 2011.07
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
We propose a polarization-multiplexing QPSK modulator for synthesis of a 16QAM signal. The generation mechanism of 16QAM is based on an electro-optic vector digital-to-analog converter, which can generate optical multilevel signals from binary electric data sequences. This modulator is utilized a dual-polarization MZM, outputting two QPSK signals with orthogonal polarization. The QPSK signals are superposed by a polarizer, in which the amplitude ratio between them is precisely controlled by rotating the polarizer to arrange the 16 symbols equally. Generation of 40 Gb/s 16QAM with a bit erro...
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16 QAM Generation by Angular Superposition of Polarization Using Polarization-Multiplexing QPSK Modulator
MOROHASHI ISAO, SAKAMOTO TAKAHIDE, SUDO MASAAKI, KANNO ATSUSHI, CHIBA AKITO, ICHIKAWA JUN'ICHIRO, HOSAKO IWAO, KAWANISHI TETSUYA
電子情報通信学会技術研究報告 111 ( 122(OCS2011 26-44) ) 63-66 - 66 2011.07
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
We propose a polarization-multiplexing QPSK modulator for synthesis of a 16QAM signal. The generation mechanism of 16QAM is based on an electro-optic vector digital-to-analog converter, which can generate optical multilevel signals from binary electric data sequences. This modulator is utilized a dual-polarization MZM, outputting two QPSK signals with orthogonal polarization. The QPSK signals are superposed by a polarizer, in which the amplitude ratio between them is precisely controlled by rotating the polarizer to arrange the 16 symbols equally. Generation of 40 Gb/s 16QAM with a bit error rate of 5.69×10^<-5> was successfully demonstrated using the modulator.
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Technologies on multi-core fiber and spatial division multiplexing enabling extremely advanced optical transmission
SAKAGUCHI Jun, AWAJI Yoshinari, WADA Naoya, KANNO Atsushi, KAWANISHI Tetsuya, HAYASHI Tetsuya, TARU Toshiki, KOBAYASHI Tetsuya, WATANABE Masayuki
Technical report of IEICE. LQE 111 ( 112 ) 29 - 34 2011.06
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
Future large-scale data transmission requires new technologies to overcome the capacity limit of conventional optical fibers. Spatial division multiplexing using multi-core fibers is a strong candidate for such technology. In this paper, we present details of our multi-core fiber and spatial division multiplexer/demultiplexer, which is also a key device for multi-core fiber data transmission.
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Technologies on multi-core fiber and spatial division multiplexing enabling extremcly advanced optical transmission
SAKAGUCHI JUN, AWAJI YOSHINARI, WADA NAOYA, KANNO ATSUSHI, KAWANISHI TETSUYA, HAYASHI TETSUYA, TARU TOSHIKI, KOBAYASHI TETSUYA, WATANABE MASAYUKI
電子情報通信学会技術研究報告 111 ( 111(OPE2011 15-27) ) 29-34 - 34 2011.06
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
Future large-scale data transmission requires new technologies to overcome the capacity limit of conventional optical fibers. Spatial division multiplexing using multi-core fibers is a strong candidate for such technology. In this paper, we present details of our multi-core fiber and spatial division multiplexer/demultiplexer, which is also a key device for multi-core fiber data transmission.
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高速多値変調デバイス
菅野敦史, 坂本高秀, 諸橋功, 川西哲也
応用物理学関係連合講演会講演予稿集(CD−ROM) 58th ROMBUNNO.25P-KB-4 2011.03
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Application of high-speed signal synthesis using precise optical modulation technique
Optronics 30 ( 3 ) 118 - 122 2011.03
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C-3-27 Full-ETDM multi-level modulation using broadband optical IQ modulator
Kanno Atsushi, Sakamoto Takahide, Chiba Akito, Sudo Masaaki, Higuma Kaoru, Ichikawa Junichiro, Kawanishi Tetsuya
Proceedings of the IEICE General Conference 2011 ( 1 ) 202 - 202 2011.02
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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B-10-60 Polarization Division Multiplexed 2×10-Gbps Optical Data Transmissions 1-μm-waveband Photonic Transport System
Kinoshita Yuta, Omigawa Yu, Yamamoto Naokatsu, Kanno Atsushi, Akahane Kouichi, Kawanishi Tetsuya, Sotobayashi Hideyuki
Proceedings of the IEICE General Conference 2011 ( 2 ) 369 - 369 2011.02
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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C-14-12 High speed and broadband frequency chirp signal generation by quadraple frequency upconversion technique using dual-drive Mach-Zehnder LN optical modulator
Yamanaka Ryuta, Atsushi Kanno, Kawanishi Tetsuya, Sotobayashi Hideyuki
Proceedings of the IEICE General Conference 2011 ( 1 ) 293 - 293 2011.02
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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80 Gb/s PDM 16QAM Generation by Polarization-Multiplexing QPSK Modulator
Isao Morohashi, Takahide Sakamoto, Masaaki Sudo, Atsushi Kanno, Akito Chiba, Junichiro Ichikawa, Iwao Hosako, Tetsuya Kawanishi
2011 IEEE PHOTONICS CONFERENCE (PHO) 2011 765 - + 2011
Language：English Publisher：IEEE
We demonstrate generation of 80 Gb/s polarization division multiplexed (PDM) 16QAM signals. 16QAM signals were generated by a polarization-multiplexing QPSK modulator with polarization angular superposition, and PDM-16QAM signals were transmitted over 20 km single-mode fibers.
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Frequency-stabilized W-band two-tone optical signal generation for high-speed RoF and radio transmission
Atsushi Kanno, Keizo Inagaki, Isao Morohashi, Toshiaki Kuri, Iwao Hosako, Tetsuya Kawanishi
2011 IEEE PHOTONICS CONFERENCE (PHO) 2011 272 - 273 2011
Language：English Publisher：IEEE
We demonstrated W-band RoF signal generation with higb-extinction-ratio optical modulation. Frequency quadruple technique with optical band elimination filter realizes frequency-stabilized W-band two-tone optical signal generation and its separation by AWG.
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Development and transmission quality estimation of a new optical frequency resource of the T-band for ultra-broadband holey-fiber photonic transport system
Omigawa Yu, Kinoshita Yuta, Yamamoto Kazuyuki, Yamamoto Naokatsu, Kanno Atsushi, Akahane Kouichi, Kawanishi Tetsuya, Sotobayashi Hideyuki
Technical report of IEICE. OFT 110 ( 248 ) 25 - 28 2010.10
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
To expand the usable wavelength bandwidth for optical communications, we have focused on a use of a 1-μm wavelength band as namely a T-band (Thousand-band), thereby pioneering a new waveband for a photonic transport system. To construct T -band photonic transport system, attractive photonic ICT devices such as YDFA (Ytterbium Doped Fiber Amplifier) and holey-fiber transmission lines are developed. In this paper, T -band, 10-Gbps, and error-free ultra-broadband photonic transmission over a holey fiber can be demonstrated. Pioneering broadband optical frequency resources over the 8.6-THz is s...
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B-13-46 Estimation of optical frequency resources in 1-μm waveband for photonic transport system
Omigawa Yu, Kinoshita Yuta, Yamamoto Kazuyuki, Yamamoto Naokatsu, Kanno Atsushi, Akahane Kouichi, Kawanishi Tetsuya, Sotobayashi Hideyuki
Proceedings of the Society Conference of IEICE 2010 ( 2 ) 353 - 353 2010.08
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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B-10-73 166-Gb/s NRZ-DP-DPSK optical modulation with full-ETDM technique
Kanno Atsushi, Sakamoto Takahide, Chiba Akito, Kawanishi Tetsuya, Sudo Masaaki, Higuma Kaoru, Ichikawa Junichiro
Proceedings of the Society Conference of IEICE 2010 ( 2 ) 260 - 260 2010.08
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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ETDMによる166 Gb/s NRZ‐DP‐DPSK光変調
菅野敦史, 坂本高秀, 千葉明人, 川西哲也, 須藤正明, 日隈薫, 市川潤一郎
電子情報通信学会大会講演論文集 2010 260 2010.08
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Electro-optic synthesis of high-speed optical multilevel signals
SAKAMOTO Takahide, CHIBA Akito, LU Guo-Wei, MOROHASHI Isao, KANNO Atsushi, KAWANISHI Tetsuya, SUDOU Masaaki, HIGUMA Kaoru, ICHIKAWA Junichiro
Technical report of IEICE. OPE 110 ( 156 ) 45 - 50 2010.07
Language：English Publisher：The Institute of Electronics, Information and Communication Engineers
We investigate electro-optic digital-to-analog converter (EO-DAC) that can synthesize several types of optical multilevel signals, such as nQAM and nPSK. Conventionally, optical vector IQ modulator is utilized to synthesize optical QAM, where inphase and quadrature components of optical carrier orthoganally signalled in multi-level. In this case, the analog channel between an electric digital-to-analogue converter and the vector modulator should be carefully managed keeping adequate lineality. In the EO-DAC, on the other hand, optical QAM is synthesized from electric binary data sequences, ...
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160 Gb/s full-ETDM NRZ-DQPSK modulation by a broadband optical IQ modulator
KANNO Atsushi, SAKAMOTO Takahide, CHIBA Akito, KAWANISHI Tetsuya, SUDOU Masaaki, HIGUMA Kaoru, ICHIKAWA Junichiro
Technical report of IEICE. OPE 110 ( 156 ) 37 - 40 2010.07
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
160-Gb/s NRZ-DQPSK optical modulation with full-ETDM technique is successfully demonstrated. A development of an optical IQ moduator with novel functions, which are broad bandwidth and low half-wave voltage, can realize ultra-high-speed modulation.
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Simultaneous transmissions in T-, C-, and L-bands with ultra-broadband photonic transport system
YAMAMOTO NAOKATSU, OMIGAWA YU, KANNO ATSUSHI, AKAHANE KOICHI, KAWANISHI TETSUYA, SOTOBAYASHI HIDEYUKI
電子情報通信学会技術研究報告 110 ( 152(OCS2010 24-34) ) 47-50 - 50 2010.07
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
An ultra-broadband photonic transport system has been developed to expand the usable wavelength bandwidth for optical communication. Currently, we have focused on a use of a 1-μm wavelength band as namely a T-band(Thousand-band)to pioneer an ultra-broad optical frequency resources for the optical communications. In this paper, simultaneous 3 × 10-Gb/s error-free photonic transmissions are successfully demonstrated in the T-, C-, and L-bands by using the ultra-broadband photonic transport system over a 5.4-km-long holey fiber transmission line.
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Simultaneous transmissions in T-, C-, and L-bands with ultra-broadband photonic transport system
YAMAMOTO Naokatsu, OMIGAWA Yu, KANNO Atsushi, AKAHANE Kouichi, KAWANISHI Tetsuya, SOTOBAYASHI Hideyuki
Technical report of IEICE. OCS 110 ( 152 ) 47 - 50 2010.07
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
An ultra-broadband photonic transport system has been developed to expand the usable wavelength bandwidth for optical communication. Currently, we have focused on a use of a 1-μm wavelength band as namely a T-band(Thousand-band)to pioneer an ultra-broad optical frequency resources for the optical communications. In this paper, simultaneous 3 × 10-Gb/s error-free photonic transmissions are successfully demonstrated in the T-, C-, and L-bands by using the ultra-broadband photonic transport system over a 5.4-km-long holey fiber transmission line.
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カーボンナノチューブ合成に向けたGe触媒の評価
前田信, 赤羽浩一, 山本直克, 菅野敦史, 高井裕司
応用物理学関係連合講演会講演予稿集(CD−ROM) 57th ROMBUNNO.18A-TE-6 2010.03
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C-3-70 80 Gb/s NRZ-DPSK modulation using a broadband and low Vπ modulator
Kanno Atsushi, Sakamoto Takahide, Chiba Akito, Kawanishi Tetsuya, Higuma Kaoru, Sudou Masaaki, Ichikawa Junichiro
Proceedings of the IEICE General Conference 2010 ( 1 ) 243 - 243 2010.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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C-14-2 High-speed chirp signal generation by double sideband-suppressed carrier modulation using MZ LiNbO_3 optical modulator
Honda Shinnosuke, Kanno Atsushi, Kawanishi Tetsuya, Sotobayashi Hideyuki
Proceedings of the IEICE General Conference 2010 ( 1 ) 289 - 289 2010.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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100 Gbps NRZ-DPSK signal generation using high-speed and low-Vπ LN modulator
KANNO Atsushi, SAKAMOTO Takahide, CHIBA Akito, KAWANISHI Tetsuya, HIGUMA Kaoru, SUDOU Masaaki, ICHIKAWA Junichiro
Technical report of IEICE. OCS 109 ( 400 ) 89 - 92 2010.01
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
A broadband modulator with a low operation voltage has been developed for ultra-high-speed modulation. We fabricated the high-speed optical LN modulator with 3-dB bandwidth of 25 GHz. Applying a ridge-type optical waveguide structure on a z-cut LN substrate helps realize a Vπ of 1.9 V at a frequency of 25 GHz in differential operation. 100 Gb/s NRZ-DPSK signal generation with the modulator was successfully demonstrated.
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波動伝搬LEI映像の分析による化合物半導体誘電正接の推定
塩沢隆広, 菅野敦史, 笹川清隆, 土屋昌弘
電子情報通信学会大会講演論文集 2009 14 2009.09
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C-6-3 LEI Analysis to Evaluate tanδ for W-Band Wave in Compound Semiconductor Substrate
Shiozawa Takahiro, Kanno Atsushi, Sasagawa Kiyotaka, Tsuchiya Masahiro
Proceedings of the Society Conference of IEICE 2009 ( 2 ) 14 - 14 2009.09
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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Development of high-speed LiNbO_3 optical modulator for over 100Gb/s transmission
KANNO Atsushi, SAKAMOTO Takahide, CHIBA Akito, KAWANISHI Tetsuya, HIGUMA Kaoru, SUDOU Masaaki, ICHIKAWA Junichiro
Technical report of IEICE. OPE 109 ( 175 ) 13 - 16 2009.08
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
We successfully fabricated a high-speed optical vector modulator for over 100Gb/s signal generation. An electric-electric frequency response originating from a substrate mode-coupling is improved by using 0.1mm-thick LiNbO_3 substrate. The optimization of the modulator structure realizes a lower half-wave voltage of the modulator. We demonstrated 100Gb/s (50 Gbaud) NRZ-DQPSK modulation and 90Gb/s NRZ-DBPSK modulation.
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Development of high-speed LiNbO3 optical modulator for over 100 Gb/s transmission
KANNO ATSUSHI, SAKAMOTO TAKAHIDE, CHIBA AKITO, KAWANISHI TETSUYA, HIGUMA KAORU, SUDO MASAAKI, ICHIKAWA JUN'ICHIRO
電子情報通信学会技術研究報告 109 ( 173(EMD2009 26-58) ) 13-16 - 16 2009.08
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
We successfully fabricated a high-speed optical vector modulator for over 100Gb/s signal generation. An electric-electric frequency response originating from a substrate mode-coupling is improved by using 0.1mm-thick LiNbO_3 substrate. The optimization of the modulator structure realizes a lower half-wave voltage of the modulator. We demonstrated 100Gb/s (50 Gbaud) NRZ-DQPSK modulation and 90Gb/s NRZ-DBPSK modulation.
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CS-4-3 W-band Wave Analyses by Millimeter-wave LEI-camera System
Kanno Atsushi, Shiozawa Takahiro, Sasagawa Kiyotaka, Tsuchiya Masahiro
Proceedings of the IEICE General Conference 2009 ( 1 ) "S - 44"-"S-45" 2009.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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第2高調波発生によるW‐band 2トーン光信号生成
笹川清隆, 笹川清隆, 菅野敦史, 土屋昌弘
電子情報通信学会大会講演論文集 2009 296 2009.03
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C-14-13 W-band Two-Tone Photonic Signal Generation Based on Second Harmonic Generation
Sasagawa Kiyotaka, Kanno Atsushi, Tsuchiya Masahiro
Proceedings of the IEICE General Conference 2009 ( 1 ) 296 - 296 2009.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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C-14-15 100GHz Traveling Wave Analyses by Numerical Simulator and Live Electrooptic Imaging Camera
Shiozawa Takahiro, Kanno Atsushi, Sasagawa Kiyotaka, Tsuchiya Masahiro
Proceedings of the IEICE General Conference 2009 ( 1 ) 298 - 298 2009.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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不可視情報のイメージング最前線 電界カメラによる高周波回路のリアルタイム動作映像観察
土屋昌弘, 菅野敦史, 笹川清隆
Optronics 27 ( 322 ) 166-171 - 171 2008.10
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C-2-90 Dynamic LEI Observation of Microstrip Line Components and Circuits
Tsuchiya M, Kanno A, Sasagawa K, Shiozawa T
Proceedings of the Society Conference of IEICE 2008 ( 1 ) 115 - 115 2008.09
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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C-14-1 Frequency Doubled Two-Tone Photonic Signal Generation Based on Second Harmonic Generation
Sasagawa Kiyotaka, Kanno Atsushi, Tsuchiya Masahiro
Proceedings of the Society Conference of IEICE 2008 ( 1 ) 232 - 232 2008.09
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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Multi-channel Complex Permittivity Measurement Using Live Electrooptic Imaging Camera
KANNO Atsushi, SASAGAWA Kiyotaka, TSUCHIYA Masahiro
IEICE technical report. Microwaves 108 ( 154 ) 69 - 72 2008.07
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
The concept of multi-channel complex permittivity measurement using a live electrooptic imaging (LEI) camera is proposed. The complex permittivity of aqueous sample has been evaluated successfully with the transmitted microwave intensity and phase information, and coincides well with those reported in the literature. The instantaneous observation functionality of using the LEI camera could be beneficial for prompt multi-channel complex permittivity analysis.
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多連パルス入射時の弱閉じ込め励起子光力—効果サブピコ秒応答
菅野敦史, 菅野敦史, REDOUANE Katouf, REDOUANE Katouf, 小島磨, 小島磨, 小島磨, 早瀬(伊師)潤子, 早瀬(伊師, 潤子, 土屋昌弘, 土屋昌弘, 井須俊郎, 井須俊郎, 井須俊郎
応用物理学関係連合講演会講演予稿集 55th ( 3 ) 1455 2008.03
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電界カメラ:小型可搬化とdevice‐on‐the‐top構成
土屋昌弘, 菅野敦史, 塩沢隆広, 笹川清隆
電子情報通信学会大会講演論文集 2008 S.27-S.28 2008.03
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CS-1-14 LEI Camera : Desk-top and Device-on-the-top Configurations
Tsuchiya M, Kanno A, Shiozawa T, Sasagawa K
Proceedings of the IEICE General Conference 2008 ( 1 ) "S - 27"-"S-28" 2008.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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C-14-17 Live Electrooptic Imaging of Quasi-Millimeter Wave Electric Near-Fields
Sasagawa Kiyotaka, Kanno Atsushi, Tsuchiya Masahiro
Proceedings of the IEICE General Conference 2008 ( 1 ) 335 - 335 2008.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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C-2-140 Noncontact Complex Refractive Index Measurement of Aqueous Samples with Live Electrooptic Imaging Camera
Kanno Atsushi, Sasagawa Kiyotaka, Tsuchiya Masahiro
Proceedings of the IEICE General Conference 2008 ( 1 ) 173 - 173 2008.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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C-3-26 Nonlinear optical response investigation of GaAs nano-wire waveguide
Katouf Redouane, Kanno Atsushi, Yamamoto Naokatsu, Sotobayashi Hideyuki, Tsuchiya Masahiro
Proceedings of the IEICE General Conference 2008 ( 1 ) 207 - 207 2008.03
Language：English Publisher：The Institute of Electronics, Information and Communication Engineers
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Live electro-optic imaging
ITE technical report 31 ( 53 ) 1 - 5 2007.11
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弱閉じ込め励起子系における光カー効果のピコ秒応答
菅野敦史, 菅野敦史, KATOUF Redouane, KATOUF Redouane, 小島磨, 小島磨, 小島磨, 早瀬(伊師)潤子, 早瀬(伊師, 潤子, 土屋昌弘, 土屋昌弘, 井須俊郎, 井須俊郎, 井須俊郎
応用物理学会学術講演会講演予稿集 68th ( 3 ) 1419 2007.09
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CS-6-1 Live Electro-Optic Imaging (LEI) : Real-time Image Analysis of Microwave Circuits
Sasagawa Kiytotaka, Kanno Atsushi, Tsuchiya Masahiro
Proceedings of the Society Conference of IEICE 2007 ( 1 ) "S - 64"-"S-65" 2007.08
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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23pPSA-91 Orientation decay of weakly confined excitons
Kojima O, Isu T, Ishi-Hayase J, Kanno A, Katouf Redouane, Sasaki M, Tsuchiya M
Meeting abstracts of the Physical Society of Japan 62 ( 2 ) 769 - 769 2007.08
Language：Japanese Publisher：The Physical Society of Japan (JPS)
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GaAs薄膜中弱閉じ込め励起子の光学応答
菅野敦史, 菅野敦史, 井須俊郎, 井須俊郎, 井須俊郎, 小島磨, 小島磨, 小島磨, 早瀬(伊師)潤子, 早瀬(伊師, 潤子, 佐々木雅英, 土屋昌弘, 土屋昌弘
応用物理学関係連合講演会講演予稿集 54th ( 3 ) 1551 2007.03
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10,000並列光ヘテロダインによる回路近傍電界イメージング
笹川清隆, 菅野敦史, 川西哲也, 土屋昌弘
電子情報通信学会大会講演論文集 2007 ( 1 ) S.64-S.65 - 64"-"S-65" 2007.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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CS-10-1 10,000 Parallel heterodyne System for Electro-Optic Imaging of Electric Near-Fields
Sasagawa Kiyotaka, Kanno Atsushi, Kawanishi Tetsuya, Tsuchiya Masahiro
Proceedings of the IEICE General Conference 2007 ( 1 ) "S - 64"-"S-65" 2007.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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B-4-5 Phase Imaging of Transmitted Microwave by High-Resolution Electric Near-Field Camera
Kanno Atsushi, Sasagawa Kiyotaka, Kawanishi Tetsuya, Tsuchiya Masahiro
Proceedings of the IEICE General Conference 2007 ( 1 ) 329 - 329 2007.03
Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers
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19pPSB-15 Interference effects between weakly confined exciton states on nonlinear optical response
Kojima O, Isu T, Ishi-Hayase, Kanno A, Katouf Redouane, Sasaki M, Tsuchiya M
Meeting abstracts of the Physical Society of Japan 62 ( 1 ) 732 - 732 2007.02
Language：Japanese Publisher：The Physical Society of Japan (JPS)
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19pPSB-14 Photoluminescence dynamics of excitons weakly confined in GaAs thin films
Kanno Atsushi, Isu Toshiro, Kojima Osamu, Ishi-Hayase Junko, Sasaki Masahide, Tsuchiya Masahiro
Meeting abstracts of the Physical Society of Japan 62 ( 1 ) 732 - 732 2007.02
Language：Japanese Publisher：The Physical Society of Japan (JPS)
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GaAs薄膜中弱閉じ込め励起子のサブピコ秒光カー効果応答
菅野敦史, 菅野敦史, KATOUF R, KATOUF R, 小島磨, 小島磨, 小島磨, 早瀬(伊師)潤子, 早瀬(伊師, 潤子, 土屋昌弘, 土屋昌弘, 井須俊郎, 井須俊郎, 井須俊郎
光物性研究会論文集 18th 191-194 2007
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GaAs薄膜弱閉じ込め励起子の時間分解発光解析
菅野敦史, 菅野敦史, 井須俊郎, 井須俊郎, 井須俊郎, 小島磨, 小島磨, 小島磨, 早瀬(伊師)潤子, 早瀬(伊師, 潤子, 佐々木雅英, 土屋昌弘, 土屋昌弘
光物性研究会論文集 17th 237-240 2006
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20pPSA-31 Photo-induced Kerr rotation in semiconductor nanostructures III
Kanno Atsushi, Masumoto Yasuaki
Meeting abstracts of the Physical Society of Japan 60 ( 2 ) 588 - 588 2005.08
Language：Japanese Publisher：The Physical Society of Japan (JPS)
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24pXQ-3Photo-induced Kerr rotation in semiconductor nanostructures II
Kanno Atsushi, Masumoto Yasuaki
Meeting abstracts of the Physical Society of Japan 60 ( 1 ) 687 - 687 2005.03
Language：Japanese Publisher：The Physical Society of Japan (JPS)
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12pXC-15 Photo-induced Kerr rotation in semiconductor nanostructures
Kanno Atsushi, Masumoto Yasuaki
Meeting abstracts of the Physical Society of Japan 59 ( 2 ) 640 - 640 2004.08
Language：Japanese Publisher：The Physical Society of Japan (JPS)
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Spin relaxation dynamics in cuprous halide quantum dots
Kanno Atsushi, Masumoto Yasuaki
Meeting abstracts of the Physical Society of Japan 58 ( 2 ) 663 - 663 2003.08
Language：Japanese Publisher：The Physical Society of Japan (JPS)
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LO Phonon Softening of Cuprous Halide Quantum Dots
Kanno Atsushi, Masumoto Yasuaki
Meeting abstracts of the Physical Society of Japan 57 ( 2 ) 650 - 650 2002.08
Language：Japanese Publisher：The Physical Society of Japan (JPS)
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Photoinduced electric dipole in CuCl quantum dots
Masumoto Y, Naruse F, Atsushi Kanno
Meeting abstracts of the Physical Society of Japan 56 ( 2 ) 622 - 622 2001.09
Language：Japanese Publisher：The Physical Society of Japan (JPS)
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Abnormally behaving optical spectra of CuCl quantum dots under ultraviolet irradiation
Kanno Atsushi, Masumoto Yasuaki
Meeting abstracts of the Physical Society of Japan 56 ( 1 ) 657 - 657 2001.03
Language：Japanese Publisher：The Physical Society of Japan (JPS)
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