論文 - 菅野 敦史
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Waveform over fiber: DSP-aided coherent fiber-wireless transmission using millimeter and terahertz waves 査読あり
Atsushi Kanno, Pham Tien Dat, Toshiaki Kuri, Iwao Hosako, Tetsuya Kawanishi, Yuki Yoshida, Ken-ichi Kitayama
BROADBAND ACCESS COMMUNICATION TECHNOLOGIES IX 9387 2015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：SPIE-INT SOC OPTICAL ENGINEERING
In this paper, we describe seamless networks based on millimeter and terahertz wave radio links using waveform transfer over optical fibers. Coherent optical transceivers with digital signal processing provide transmission impairment compensation in both optical and radio sections, where devices for the signal processing are implemented at edges of the links. Waveforms, which include the modulation formats, the symbol rates, etc., are maintained in the entire links, to reduce transmission latency and energy consumption in the network.
DOI： 10.1117/12.2077056
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Widely linear EDFA for Analog Radio-over-Fiber Transmission over a Passive Optical Network Configuration 査読あり
Masaki Shiraiwa, Atsushi Kanno, Yoshinari Awaji, Noya Wada, Tetsuya Kawanishi, Ken-ichi Kitayama
2015 PHOTONICS CONFERENCE (IPC) 2015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
An analog radio-over-fiber signal transmission over a passive-optical-network using a widely-linear erbium-doped fiber amplifier with a capability of 256 subscribers is demonstrated with an observed error vector magnitude less than 4% rms.
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Zero-Bias Operational Ultra-Broadband UTC-PD above 110 GHz for High Symbol Rate PD-Array in High-Density Photonic Integration 査読あり
T. Umezawa, K. Akahane, N. Yamamoto, A. Kanno, K. Inagaki, T. Kawanishi
2015 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXHIBITION (OFC) 2015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 have successfully developed a zero-bias operational ultra-broadband uni-travelingcarrier photodiode (UTC-PD) with a frequency bandwidth above 110 GHz using a low carrier concentration of 3 x 10(14) cm(-3) in the carrier collection layer.
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High-performance PIN photodetector at 67 GHz and beyond for radio over fiber applications 査読あり
T. Umezawa, K. Akahane, N. Yamamoto, A. Kanno, T. Kawanishi
TERAHERTZ, RF, MILLIMETER, AND SUBMILLIMETER-WAVE TECHNOLOGY AND APPLICATIONS VIII 9362 2015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：SPIE-INT SOC OPTICAL ENGINEERING
High-performance photodetectors (PDs) for radio over fiber (RoF) applications over 60 GHz were designed and fabricated. The RF output was investigated while a high linearity was observed for two designs: a low carrier concentration InGaAs absorption layer in a PIN structure and a low carrier concentration collection layer in a unitravelling-carrier (UTC) structure. The RF output performances of both PIN and UTC structures were studied at 67 GHz and 100 GHz respectively. High photocurrent densities could be obtained from both structures (21.7 kA/cm(2) in the PIN structure and 35.4 kA/cm(2) in the UTC structure). The PIN structure exhibited a slightly higher current density of 1.6 times than the UTC structure. The frequency response of the UTC-PD exhibited excellent flatness up to 110 GHz, with a 3 dB bandwidth beyond 110 GHz. In addition, maximum RF output powers of +6.8 dBm at 67 GHz and -5 dBm at 100 GHz was successfully obtained. The space charge effect could be ruled out for the output linearity, but avoiding overheating in the p-contact metal had to be considered. By modifying impedance matching circuit designs, the maximum RF output power level of 3 dB can be improved.
DOI： 10.1117/12.2078616
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Zero-Bias Operational Ultra-Broadband UTC-PD above 110 GHz for High Symbol Rate PD-Array in High-Density Photonic Integration 査読あり
T. Umezawa, K. Akahane, N. Yamamoto, A. Kanno, K. Inagaki, T. Kawanishi
2015 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXHIBITION (OFC) 2015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 have successfully developed a zero-bias operational ultra-broadband uni-travelingcarrier photodiode (UTC-PD) with a frequency bandwidth above 110 GHz using a low carrier concentration of 3 x 10(14) cm(-3) in the carrier collection layer.
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Widely linear EDFA for Analog Radio-over-Fiber Transmission over a Passive Optical Network Configuration 査読あり
Masaki Shiraiwa, Atsushi Kanno, Yoshinari Awaji, Noya Wada, Tetsuya Kawanishi, Ken-ichi Kitayama
2015 PHOTONICS CONFERENCE (IPC) 2015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
An analog radio-over-fiber signal transmission over a passive-optical-network using a widely-linear erbium-doped fiber amplifier with a capability of 256 subscribers is demonstrated with an observed error vector magnitude less than 4% rms.
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Waveform over fiber: DSP-aided coherent fiber-wireless transmission using millimeter and terahertz waves 査読あり
Atsushi Kanno, Pham Tien Dat, Toshiaki Kuri, Iwao Hosako, Tetsuya Kawanishi, Yuki Yoshida, Ken-ichi Kitayama
BROADBAND ACCESS COMMUNICATION TECHNOLOGIES IX 9387 2015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：SPIE-INT SOC OPTICAL ENGINEERING
In this paper, we describe seamless networks based on millimeter and terahertz wave radio links using waveform transfer over optical fibers. Coherent optical transceivers with digital signal processing provide transmission impairment compensation in both optical and radio sections, where devices for the signal processing are implemented at edges of the links. Waveforms, which include the modulation formats, the symbol rates, etc., are maintained in the entire links, to reduce transmission latency and energy consumption in the network.
DOI： 10.1117/12.2077056
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Optical-Network-Connected Multi-Channel 96-GHz-Band Distributed Radar System 査読あり
Atsushi Kanno, Toshiaki Kuri, Tetsuya Kawanishi
PASSIVE AND ACTIVE MILLIMETER-WAVE IMAGING XVIII 9462 2015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：SPIE-INT SOC OPTICAL ENGINEERING
The millimeter-wave (MMW) radar is a promising candidate for high-precision imaging because of its short wavelength and broad range of available bandwidths. In particular in the frequency range of 92-100 GHz, which is regulated for radiolocation, an atmospheric attenuation coefficient less than 1 dB/km limits the imaging range. Therefore, a combination of MMW radar and distributed antenna system directly connected to optical fiber networks can realize both high-precision imaging and large-area surveillance. In this paper, we demonstrate a multi-channel MMW frequency-modulated continuous-wave distributed radar system connected to an analog radio-over-fiber network.
DOI： 10.1117/12.2085267
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Optical-Electrical Hybrid Signal Equalizer For Ultra-High-Speed Transmission 査読あり
Shinya Maruyama, Kazunari Tomishige, Atsushi Kanno, Tetsuya Kawanishi, Hideyuki Sotobayashi
OPTICAL METRO NETWORKS AND SHORT-HAUL SYSTEMS VII 9388 2015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：SPIE-INT SOC OPTICAL ENGINEERING
We demonstrate an optical-electrical hybrid equalizer, which comprises an optical domain equalizer fabricated using optical filter banks and an electrical filter in a digital domain by a digital signal processing, to experimentally demodulate degraded 40-Gbaud quadrature phase-shift keying (QPSK) signal. The optical signal-to-noise ratio (OSNR) required for a BER of 1 x 10(-3) is improved to 7 dB without an optical equalizer (OEQ) under the back-to-back condition. The fluctuation in the OEQ strength between 0-6 dB will not affect signal quality significantly. The signal degradation caused by the frequency response of devices was minimized using by the hybrid equalizer.
DOI： 10.1117/12.2078117
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Optical Frequency-Interleaving Full-Duplex Transmission of 96-GHz-Band Frequency-Modulated Continuous-Wave Downlink Signal and 10-Gb/s On-Off-Keying Uplink Signal 査読あり
Toshiaki Kuri, Atsushi Kanno, Tetsuya Kawanishi
2015 PHOTONICS CONFERENCE (IPC) 2015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
An optical frequency-interleaving full-duplex transmission of 96-GHz-band frequency-modulated continuous-wave downlink signal and 10-Gb/s on-off-keying uplink signals is investigated, The proposed full-duplexing transmission with a flexible wavelength channel selector over 10-km fiber-optic link is experimentally demonstrated.
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Optical FM-CW signal generation for a terahertz radar system by higher-order optical modulation
Atsushi Kanno, Norihiko Sekine, Yoshinori Uzawa, Iwao Hosako, Tetsuya Kawanishi
Progress in Electromagnetics Research Symposium 2015-January 2287 - 2291 2015年
掲載種別：研究論文（国際会議プロシーディングス）
In this paper, optical frequency-chirped signal generation using a high-order optical modulation technique is investigated. An optical frequency comb generator based on optical modulation is utilized as a frequency multiplier. Its multiplication factor of 12 allows designing a 300GHz terahertz-band radar system. An input signal at the central frequency of 25GHz with a chirp bandwidth of 1GHz, 2GHz, and 3GHz provides 6GHz, 12GHz, and 18GHz optical signals at 6th-order harmonics, respectively. A frequency separation of the +6th and -6th-order components is equal to 300 GHz, with a chirp bandwidth of 12GHz and 24GHz. The proposed technique can be used to design high-precision imaging systems.
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Optical Comb-based Versatile Wavelength Division Multicasting Add-drop Node for Efficient WDM Networks 査読あり
Jun Sakaguchi, Takahide Sakamoto, Atsushi Kanno, Yoshinari Awaji, Naoya Wada, Tetsuya Kawanishi
2015 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXHIBITION (OFC) Th2A.6 2015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 robust and modulation-format-transparent multicasting wavelength converter based on a Mach-Zehnder optical comb generator. All the wavelength-converted channels show maximum 0,6 dB and 1.1 dB penalties for QPSK and 16QAM signals, respectively.
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Millimetre-wave Electro-Optic Modulator with Quasi-Phase-Matching Array of Orthogonal-Gap-Embedded Patch-antennas on Low-k Dielectric Material 査読あり
Yusuf Nur Wijayanto, Atsushi Kanno, Hiroshi Murata, Sinya Nakajima, Tetsuya Kawanishi, Yasuyuki Okamura
2015 INTERNATIONAL CONFERENCE ON PHOTONICS, OPTICS AND LASER TECHNOLOGY (PHOTOPTICS), VOL 2 5 - 13 2015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
In Fibre-Wireless (Fi-Wi) links, conversion devices between wireless microwave/millimetre-wave and lightwave signals are required. In this paper, we propose a wireless millimetre-wave-lightwave signal converter using an electro-optic (EO) modulator with Quasi-Phase-Matching (QPM) array of orthogonal-gap-embedded patch-antennas on a low-k dielectric material. Wireless millimetre-wave signals can be received and converted directly to lightwave signals using the proposed device. It can be operated with no external power supply and extremely-low millimetre-wave losses. The orthogonal-gap-embedded patch-antennas can be used for receiving dual-linearized or circular polarizations of wireless millimetre-wave signals. The QPM array structure can be adopted for enhancing modulation efficiency by transit-time effects consideration. Structure, analysis, and experimental of the proposed device are discussed for 40GHz operational millimetre-wave bands.
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Microstrip Patch Antennas Feed to Optical Waveguides in Electro-Optic Modulator for Millimeter-Wave Radar System 査読あり
Y. N. Wijayanto, A. Kanno, T. Kawanishi, H. Murata, Y. Okamura
2015 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS) 2015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
Microstrip patch antennas feed to optical waveguides in an electro-optic (EO) modulator are proposed for millimeter-wave radar system. Reflected millimeter-wave radar signals can be received by the microstrip patch antennas and converted directly to lighwave signals through EO modulation. The lightwave signals can be distributed using low loss optical fibers. Millimeter-wave loss and distortion are almost negligible. Device analysis and experiment for 40GHz millimeter-wave bands are discussed.
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Metamaterial Electric-LC Resonators on Electro-Optic Modulator for Wireless THz-Lightwave Signal Conversion 査読あり
Yusuf Nur Wijayanto, Atsushi Kanno, Tetsuya Kawanishi
2015 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) 2015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
Metamaterial electric-LC resonators on an electro-optic modulators are proposed for wireless THz-lightwave signal conversion. Strong electric field can be induced on the resonators by wireless THz irradiation and converted to lightwave signals through electro-optic modulation.
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Metamaterial Antenna Integrated to LiNbO3 Optical Modulator for Millimeter-Wave-Photonic Links 査読あり
Y. N. Wijayanto, A. Kanno, A. A. Fathnan, P. Daud, T. Kawanishi, D. Mahmudin, N. Yamamoto
2015 INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP) 2015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 report current research progress on a metamaterial antenna integrated to an optical modulator for millimeter-wave-photonic links. The metamaterial antenna is composed by an array of electric-LC resonators on a LiNbO3 optical crystal. Large millimeter-wave electric field is induced across the capacitive gaps of the resonators due to free-space millimeter-wave irradiation. Optical modulation through Pockels effects can be obtained when light propagates along the capacitive gaps. The integrated device is operated effectively by considering interaction between millimeter-wave and lightwave electric fields along the capacitive gaps. Basic operations of the integrated device for 90GHz millimeter-wave bands are reported and discussed. Optical sidebands with carrier-to-sideband ratio of about -60dB by millimeter-wave irradiation power of similar to 20mW can be experimentally measured using optical spectrum analyzer.
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Long Distance Transmission in a Multi-Core Fiber with Self-Homodyne Detection 査読あり
Benjamin J. Puttnam, Ruben S. Luis, Jose-Manuel Delgado Mendinueta, Jun Sakaguchi, Werner Klaus, Yoshinari Awaji, Naoya Wada, Atsushi Kanno, Tetsuya Kawanishi
2015 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXHIBITION (OFC) Th1D.5 2015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 investigate long-distance space-division multiplexed self-homodyne transmission in two synchronized recirculating loops. Compared to intradync detection, PDM-64QAM transmission distance with DFB lasers is doubled and 6800km PDM-QPSK transmission, within 1dB of intradyne detection, is achieved.
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High-speed Optical and Millimeter-wave Wireless Link for Disaster Recovery 査読あり
Ken-ichi Kitayama, Yuki Yoshida, Yuya Yamaguchi, Hirochika Nakajima, Kosuke Nishimura, Abdelmoula Bekkali, Masayuki Oishi, Naoyasu Kamiya, Keiji Tanaka, Hidenori Iwai, Kazuya Ota, Norihiko Sato, Yoichi Oikawa, Kazukiyo Joshin, Nobuhiko Shibagaki, Kaoru Higuma, Satoshi Oikawa, Junichiro Ichikawa, Atsushi Kanno, Tetsuya Kawanishi
2015 IEEE GLOBECOM WORKSHOPS (GC WKSHPS) 2015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 government-funded R&D program aiming at a resilient optical and millimeter-wave wireless link for a novel span protection scheme in a disaster recovery is presented. We also describe the key enabling technologies of both optical and wireless sub-systems and devices, including MIMO radio-over-fiber system, optical two-tone generation, and the transceiver and power amplifier in W-band.
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High-Spectral Efficiency Millimeter Wave-over-Fiber System for Future Mobile Fronthaul 査読あり
Pham Tien Dat, Atsushi Kanno, Keizo Inagaki, Naokatsu Yamamoto, Tetsuya Kawanishi
ECOC 2015 41ST EUROPEAN CONFERENCE ON OPTICAL COMMUNICATION 2015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 present a high-spectral efficiency fronthaul system for the transmission of millimeter-wave and multiple-input multiple-output (MIMO) signals in future mobile networks. The transmission of an interband carrier aggregation and a 2 x 2 MIMO LTE-A signal over the system is successfully demonstrated.
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90 GHz OFDM 16QAM signal transmission over IF over fiber link
Atsushi Kanno, Pham Tien Dat, Tetsuya Kawanishi
Proceedings 2015 European Conference on Lasers and Electro-Optics - European Quantum Electronics Conference, CLEO/Europe-EQEC 2015 2015年
