論文 - 菅野 敦史
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305 Tb/s Space Division Multiplexed Transmission Using Homogeneous 19-Core Fiber 招待あり 査読あり
Jun Sakaguchi, Benjamin J. Puttnam, Werner Klaus, Yoshinari Awaji, Naoya Wada, Atsushi Kanno, Tetsuya Kawanishi, Katsunori Imamura, Harumi Inaba, Kazunori Mukasa, Ryuichi Sugizaki, Tetsuya Kobayashi, Masayuki Watanabe
JOURNAL OF LIGHTWAVE TECHNOLOGY 31 ( 4 ) 554 - 562 2013年02月
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
We report record capacity data transmission at 305 Tb/s over 10.1 km, using space division multiplexing (SDM) with 19 channels. To realize such a large SDM channel number, we fabricated a trench-assisted homogeneous 19-core fiber with average intercore crosstalk of about dB at 1550 nm. We also fabricated a 19-channel SDM multiplexer/demultiplexer using free-space optics with low insertion losses and low additional crosstalk. The data signal transmitted through each SDM channel was 100 wavelength division multiplexing (100 GHz spacing) 2 86 Gb/s polarization-division-multiplexed quadrature phase shift keying signals and the spectral efficiency was 30.5 b/s/Hz.
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Investigating self-homodyne coherent detection in a 19 channel space-division-multiplexed transmission link 査読あり
Benjamin J. Puttnam, Jun Sakaguchi, Jose Manuel Delgado Mendinueta, Werner Klaus, Yoshinari Awaji, Naoya Wada, Atsushi Kanno, Tetsuya Kawanishi
OPTICS EXPRESS 21 ( 2 ) 1561 - 1566 2013年01月
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：OPTICAL SOC AMER
We investigate the performance of a self-homodyne coherent detection (SHCD) system using a 19 core multi-core fiber (MCF) and 16 wavelength-division-multiplexed channels. We show that SHCD, with the pilot-tone transmitted on a single MCF core and information carrying signals on the remaining cores, is compatible with space-division-multiplexed transmission, potentially relaxing laser linewidth and digital signal processing requirements due to phase noise cancellation. However, inter-core crosstalk can have an impact on performance and core selection. (C)2013 Optical Society of America
DOI： 10.1364/OE.21.001561
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Frequency-stabilized radio-over-fiber signal generation based on optical frequency comb source with injection-locking technique 査読あり
Atsushi Kanno, Tetsuya Kawanishi
IEEE MTT-S International Microwave Symposium Digest 2013年
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
Frequency-stabilized millimeter- and submillimeter-wave radio-over-fiber (RoF) signal generation is successfully demonstrated using an injection-locking laser with an optical frequency comb (OFC) source. A frequency-shifter-based OFC generator can easily provide a frequency-locked optical component with an available bandwidth of up to 1 THz. An injection-locking technique that uses this comb improves the signal-to-noise ratio of the RoF signal without any degradation of phase noise. © 2013 IEEE.
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Frequency-reconfigurable optical-to-radio signal converter based on radio-over-fiber technology with optical frequency comb 査読あり
A. Kanno, T. Kuri, I. Morohashi, I. Hosako, T. Kawanishi, Y. Yoshida, K. Kitayama
IET Conference Publications 2013 ( 622 ) 666 - 668 2013年
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
A frequency-reconfigurable radio-over-fiber (RoF) signal convertor based on an optical frequency comb is proposed for application to a millimeter-wave/ terahertz/optical hybrid system. The frequency transition from the RoF signal at 83 GHz to the higher millimeter-wave and terahertz signals is successfully demonstrated.
DOI： 10.1049/cp.2013.1495
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Frequency-Locked Optical Two-Tone THz Signal Generation with Optical Frequency Comb and Injection-Locked Laser 査読あり
Atsushi Kanno, Tetsuya Kawanishi
2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS PACIFIC RIM (CLEO-PR) 2013年
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス） 出版者・発行元：IEEE
We propose an optical two-tone signal generation using an injection locking technique applied to an optical frequency comb source. An improved optical signal-to-noise ratio of greater than 10 dB is achieved.
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Evaluation of Radio-over-Fiber Link for 45-GHz- and 60-GHz-Band Simultaneous Transmissions 査読あり
A. Kanno, T. Kawanishi
2013 CONFERENCE ON AND INTERNATIONAL QUANTUM ELECTRONICS CONFERENCE LASERS AND ELECTRO-OPTICS EUROPE (CLEO EUROPE/IQEC) 2013年
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Energy and Deployment Efficiency of a Millimeter-Wave Radio-on-Radio-over-Fiber System for Railways 査読あり
Pham Tien Dat, Atsushi Kanno, Tetsuya Kawanishi
2013 OPTICAL FIBER COMMUNICATION CONFERENCE AND EXPOSITION AND THE NATIONAL FIBER OPTIC ENGINEERS CONFERENCE (OFC/NFOEC) 2013年
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス） 出版者・発行元：IEEE
We propose a radio access network for railways employing millimeter-wave Radio-onRadio- over-fiber and distributed antenna system, and evaluate its energy and deployment efficiency. We show a trade-off relation between the metrics and drive optimum system design.
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Coherent Terahertz Communication Based on DSP-Aided Radio-over-Fiber Technology 査読あり
A. Kanno, T. Kuri, I. Morohahi, I. Hosako, T. Kawanishi, Y. Yoshida, Y. Yasumura, K. Kitayama
2013 38TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ) 2013年
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス） 出版者・発行元：IEEE
Coherent terahertz-signal transmission using an optical frequency comb and a high-speed digital signal processing (DSP) technology is successfully demonstrated. The DSP-aided radio-over-fiber technology can enhance the resilience of networks to disasters.
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Coherent MMW/Terahertz Signal Transmission with Frequency-Reconfigurable RoF Transmitter Based on an Optical Frequency Comb 査読あり
Atsushi Kanno, Toshiaki Kuri, Isao Morohashi, Iwao Hosako, Tetsuya Kawanishi, Yuki Yoshida, Ken-ichi Kitayama
2013 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM) 2686 - 2691 2013年
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス） 出版者・発行元：IEEE
A frequency-reconfigurable radio-over-fiber transmitter is designed and demonstrated with an optical frequency comb source for millimeter-wave and terahertz signal transmission over a fiber-wireless hybrid link. Optical-to-radio and radio-to-optical converters with a high-speed photo mixer and frequency-heterodyne technique successfully perform coherent quadrature-phase-shift-keying signal generation and reception in the optical domain at 90 GHz and 300 GHz. A digital radio receiver also receives and demodulates the transmitted QPSK signal at 300 GHz with the same bit error rate behavior as in an optical link.
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Broadband radio-over-fiber link based on high-speed optical modulator for multi-band millimeter-wave radio 査読あり
Atsushi Kanno, Hiroyo Ogawa, Tetsuya Kawanishi, Nobuhiko Shibagaki, Hiroshi Hanyu
2013 IEEE Photonics Conference, IPC 2013 207 - 208 2013年
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
We demonstrated a broadband millimeter-wave signal delivery system over an optical fiber using a high-speed optical modulator. The high spurious-free dynamic range of the system is capable of high-capacity radio signal transport. © 2013 IEEE.
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Application of InAs quantum dots for high-speed photodiodes in fiber optics 査読あり
T. Umezawa, K. Akahane, A. Kanno, T. Kawanishi
2013 Conference on Lasers and Electro-Optics Europe and International Quantum Electronics Conference, CLEO/Europe-IQEC 2013 2013年
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス） 出版者・発行元：IEEE Computer Society
We report a new PIN photodiode using an InAs/InAsGaAs quantum-dot absorption layer with avalanche multiplication. For this photodiode, excellent I-V curves showing avalanche multiplication and a high 3-dB cutoff frequency were achieved. Designing advanced wide bandwidth avalanche photodiodes over 40 GHz is challenging [1]. A PIN structure that has a multiplied absorption layer is advantageous for realizing a short transit time in contrast to a separated absorption and multiplication (SAM) structure. Moreover, quantum dot technologies applied for obtaining high photovoltaic efficiency in solar cells are very attractive. © 2013 IEEE.
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8-GHz-bandwidth FM-CW signal generation based on optical modulation technology for W-band radar system 査読あり
Atsushi Kanno, Tetsuya Kawanishi
2013 10TH EUROPEAN RADAR CONFERENCE (EURAD) 61 - 64 2013年
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス） 出版者・発行元：IEEE
A W-band (75-110 GHz) frequency chirp signal with a bandwidth of 8 GHz and a pulse duration of 1 mu s is generated by an optical-modulator-based frequency quadrupler. The high extinction-ratio optical modulator can easily generate a clear optical two-tone signal to form a W-band signal with a high side-mode suppression ratio. The observed degradation of the single-sideband phase noise does not significantly differ from that of the theoretical limit in the frequency multiplication. We demonstrate that the frequency upconversion technique would be beneficial for an analog application that requires quality, such as in a high-precision radar system.
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210Tb/s Self-Homodyne PDM-WDM-SDM Transmission with DFB Lasers in a 19-Core Fiber 査読あり
Benjamin J. Puttnam, Jose-Manuel Delgado Mendinueta, Jun Sakaguchi, Ruben S. Luis, Werner Klaus, Yoshinari Awaji, Naoya Wada, Atsushi Kanno, Tetsuya Kawanishi
2013 IEEE PHOTONICS SOCIETY SUMMER TOPICAL MEETING SERIES 95 - + 2013年
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス） 出版者・発行元：IEEE
We demonstrate a 210Tb/s self-homodyne transmission system based on a 19-core using DFB laser transmitters and compare the transmission penalties for self-homodyne and intradyne detection in single and dual polarization schemes.
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100-GHz and 300-GHz coherent radio-over-fiber transmission using optical frequency comb source 査読あり
Atsushi Kanno, Toshiaki Kuri, Iwao Hosako, Tetsuya Kawanishi, Yoshihiro Yasumura, Yuki Yoshida, Ken-Ichi Kitayama
Proceedings of SPIE - The International Society for Optical Engineering 8645 2013年
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
Millimeter-wave and sub-millimeter-wave radio-over-fiber (RoF) technology with digital-signal-processingÂ? aided coherent detection can be a promising candidate for high-speed radio transmission links with a capacity of greater than 10 Gb/s if the energy consumption does not increase drastically. We demonstrate 100-GHzÂ? and 300-GHz-band simultaneous RoF signal generation using an optical frequency comb source comprising an optical frequency shifter in an amplified optical fiber loop, and its radio transmission over the air. 10-Gbaud quadrature-phase-shift-keying provides a capacity of 18.6 Gb /s with a 7% forward error correction overhead in single carrier signal transmission as well as in multi-carrier transmission. © 2013 SPIE.
DOI： 10.1117/12.1000150
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Radio-over-fiber photonic wireless bridge in the W-Band 査読あり
Sebastian Babiel, Andreas Stohr, Atsushi Kanno, Tetsuya Kawanishi
2013 IEEE International Conference on Communications Workshops, ICC 2013 838 - 842 2013年
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
In this paper, we present a photonic wireless system operating in the W-Band (75-110 GHz) featuring ultra-high bandwidth as well as simple NRZ-OOK modulation format. By using a cascaded optical RF and data modulation approach on the transmitter side, flexible adjustment of the wireless RF carrier in the W-Band is achieved, while direct electrical to optical conversion with advanced photonic components on the receiver side enables true photonic wireless bridging. In first experiments, data rates up to 10 Gb/s have been experimentally demonstrated. © 2013 IEEE.
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RF Response of PIN Photodiode with Avalanche Multiplication Using Quantum Dots 査読あり
T. Umezawa, K. Akahane, A. Kanno, T. Kawanishi
2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS PACIFIC RIM (CLEO-PR) 2013年
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス） 出版者・発行元：IEEE
We fabricate a new PIN photodiode using InAs/InAlGaAs quantum dot absorption layer with an avalanche multiplication, low breakdown temperature coefficient, and high frequency response. Multiplication factors of M = 1 to M = 12 and the RF response over 10GHz are reported.
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Single mach-zehnder modulator with active Y-branch for higher than 60 dB extinction-ratio operation 査読あり
Yuya Yamaguchi, Shinya Nakajima, Atsushi Kanno, Tetsuya Kawanishi, Masayuki Izutsu, Hirochika Nakajima
IET Conference Publications 2013 ( 622 ) 930 - 932 2013年
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
We investigated a lithium niobate (LiNbO3) single Mach-Zehnder modulator (MZM) with an active Y-branch, which is similar to an optical Y-branch switch. Using the modulator, we demonstrated high extinction-ratio operation (>
60 dB) and confirmed the function and the useful of the active Y-branch MZM.DOI： 10.1049/cp.2013.1583
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Two-wavelength emission laser with semiconductor quantum dots 査読あり
Kouichi Akahane, Naokatsu Yamamoto, Atsushi Kanno, Keizo Inagaki, Toshimasa Umezawa, Kawanishi Tetsuya, Takashi Endo, Yasunori Tomomatsu, Toshio Yamanoi
Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest 2013年
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
A two-wavelength emission laser has been fabricated using semiconductor quantum dots as the gain medium. A beat signal of ∼100 GHz was observed using Michelson interferometer configuration, indicating that these emissions occurred simultaneously. © 2013 IEEE.
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High extinction-ratio characteristics over 60 dB Mach-Zehnder modulator with asymmetric power splitting Y-branches on X-cut Ti: LiNbO3
Yuya Yamaguchi, Shinya Nakajima, Atsushi Kanno, Tetsuya Kawanishi, Masayuki Izutsu, Hirochika Nakajima
2013 18TH MICROOPTICS CONFERENCE (MOC) 2013年
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス） 出版者・発行元：IEEE
We investigated a Mach-Zehnder modulator with asymmetric power splitting Y-branches. Output characteristics of a modulator depend on the relation between the power splitting ratios of the front and back Y-branches. By tuning the power splitting ratio of the front Y-branch, we achieved maximum power output operation and high extinction-ratio operation respectively.
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Two-wavelength emission laser with semiconductor quantum dots 査読あり
Kouichi Akahane, Naokatsu Yamamoto, Atsushi Kanno, Keizo Inagaki, Toshimasa Umezawa, Kawanishi Tetsuya, Takashi Endo, Yasunori Tomomatsu, Toshio Yamanoi
Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest 2013年
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
A two-wavelength emission laser has been fabricated using semiconductor quantum dots as the gain medium. A beat signal of ∼100 GHz was observed using Michelson interferometer configuration, indicating that these emissions occurred simultaneously. © 2013 IEEE.
