論文 - 菅野 敦史
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High Speed 2-D Photodetector Array for Space and Mode-Division Multiplexing Fiber Communications 査読あり
Umezawa Toshimasa, Sakamoto Takahide, Kanno Atsushi, Yamamoto Naokatsu, Kawanishi Tetsuya
JOURNAL OF LIGHTWAVE TECHNOLOGY 36 ( 17 ) 3684 - 3692 2018年09月
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Performance Evaluation of Full-Duplex MIMO Seamless Fiber-Wireless System in W -Band 査読あり
Pham Tien Dat, Atsushi Kanno, Naokatsu Yamamoto, Tetsuya Kawanishi
IEEE Photonics Technology Letters 30 ( 13 ) 1175 - 1178 2018年07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：Institute of Electrical and Electronics Engineers Inc.
We present a full-duplex fiber-wireless system in the $W$ -band for simultaneous transmission of multiple-input multiple-output (MIMO) signals in downlink and uplink directions. The proposed system uses wavelength-division multiplexing in the optical link and parallel-aligned/orthogonally aligned antenna polarizations in the wireless link for the MIMO and full-duplex signal transmission. Satisfactory performance is experimentally confirmed for 2× 2 MIMO OFDM and LTE-A signals in both directions. The system is highly spectral-efficient and scalable for large-scale MIMO signal transmission.
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Wired and Wireless Links to Bridge Networks: Seamlessly Connecting Radio and Optical Technologies for 5G Networks 査読あり
Tetsuya Kawanishi, Atsushi Kanno, Hugo S.C. Freire
IEEE Microwave Magazine 19 ( 3 ) 102 - 111 2018年05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：Institute of Electrical and Electronics Engineers Inc.
As fifth-generation (5G) technology is expected to offer super-broadband mobile services with new features such as low latency for critical applications and low-power operation for Internet of Things (IoT) applications, it will use wireless interfaces for small or spot cells with a new RF resource, the high band (frequencies above 6 GHz), in addition to the low band (below 6 GHz) on macro and small cells coexisting with conventional mobile technologies [1]-[4]. Another feature of 5G wireless interfaces is more precise control of radio waves in space division through the use of multi-antenna technologies, such as massive multiple-input/multiple-output (MIMO) or beamforming [5].
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Linearized LiNbO3 Modulator with Dual Mach-Zehnder Interferometer and Branched Asymmetric CPW Electrode 査読あり
Yuya Yamaguchi, Atsushi Kanno, Naokatsu Yamamoto, Tetsuya Kawanishi, Hirochika Nakajima
European Conference on Optical Communication, ECOC 2017- 1 - 3 2018年04月
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：Institute of Electrical and Electronics Engineers Inc.
We propose a transfer-function-transformed optical modulator by introducing a branched asymmetric coplanar waveguide electrode. The structure has the potential to achieve low half-wave voltage and large bandwidth while maintaining its flexibility. We confirmed a linearity improvement with the fabricated modulator.
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Dense SDM 32-Pixel 2-D Photodetector Array 査読あり
Toshimasa Umezawa, Tadashige Sakamoto, Atsushi Kanno, Ken Kusakata, Kouichi Akahane, Atsushi Matsumoto, Naokatsu Yamamoto, Tetsuya Kawanishi
European Conference on Optical Communication, ECOC 2017- 1 - 3 2018年04月
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：Institute of Electrical and Electronics Engineers Inc.
We present a newly developed 32-pixel, high-speed 2D photodetector array operated at 25 Gbps (NRZ) with SMF and MCF, targeting direct coupling to MCF and FMF in dense SDM communications.
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Spatial Coherent Matched Detection Using High-Speed Two Dimensional Photo-Diode Array for Full-Channel Demultiplexing and Demodulation of Mode-Division-Multiplexed Signals 査読あり
Takahide Sakamoto, Toshimasa Umezawa, Guo-Wei Lu, Koichi Akahane, Atsushi Matsumoto, Atsushi Kanno, Naokatsu Yamamoto, Tetsuya Kawanishi
European Conference on Optical Communication, ECOC 2017- 1 - 3 2018年04月
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：Institute of Electrical and Electronics Engineers Inc.
We propose and demonstrate spatial coherent matched detection using two-dimensional high-speed photodiode array. Capturing amplitude and phase distribution, all tributaries of 3×20-Gb/s MDM-QPSK are simultaneously demultiplexed and coherently demodulated without using optical modal fan-out devices.
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2 × 2 MIMO FBMC-OQAM Signal Transmission over a Seamless Fiber-Wireless System in the W-band 査読あり
Francois Rottenberg, Pham Tien Dat, Trung-Hien Nguyen, Atsushi Kanno, Francois Horlin, Jerome Louveaux, Naokatsu Yamamoto
IEEE Photonics Journal 10 ( 2 ) 2018年04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：Institute of Electrical and Electronics Engineers Inc.
Offset-QAM-based filterbank multicarrier (FBMC-OQAM) is an attractive modulation candidate to increase the spectral efficiency of radio-over-fiber and fiber-wireless systems. In this paper, we first propose a general framework for MIMO FBMC-OQAM transmission systems, including the description of algorithms for mitigation of the channel impairments. The proposed design is scalable in the number of transmitted streams and flexible as multiple asynchronous users can be accommodated. The proposed system is experimentally validated in a 2 × 2 MIMO FBMC-OQAM signal over a seamless fiber-wireless in the W-band for the first time. Satisfactory performance is confirmed for a data rate of up to 18 Gb/s in both downlink and uplink directions. Furthermore, algorithms previously proposed by the authors for channel estimation and phase noise compensation are experimentally validated, confirming their effectiveness. Finally, we show that, for a similar error vector magnitude performance, an FBMC-OQAM system can achieve a 25% higher throughput rate than a corresponding orthogonal frequency division multiplexing-based fiber-wireless system.
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Millimeter-Wave Integrated Photoreceivers for High Data Rate Photonic Wireless Communication 査読あり
Toshimasa Umezawa, Kunihisa Jitsuno, Pham Tien Dat, Kenichi Kashima, Atsushi Kanno, Naokatsu Yamamoto, Tetsuya Kawanishi
IEEE Journal of Selected Topics in Quantum Electronics 24 ( 2 ) 2018年03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：Institute of Electrical and Electronics Engineers Inc.
We report on the use of 30 and 100 GHz integrated millimeter-wave photoreceivers in high data rate photonic wireless communication. The role of the bandwidth of a narrow-band photoreceiver in increasing the data rate of wireless single carrier transmission is discussed. An 11-GHz bandwidth photoreceiver achieved a data rate of 44.6 Gb/s using an 8 GBd, 64-QAM (quadrature amplitude modulation) signal. A wider bandwidth (19 GHz) integrated photoreceiver was designed and fabricated for use in the 100-GHz range. High-frequency response photoreceivers have the following advantages: they operate in a wide bandwidth easily, use frequency resources efficiently, and are subject to low amounts of atmospheric attenuation. In addition to the single carrier wireless transmission study, a high data rate (12 Gb/s) multicarrier radio over fiber (16-QAM in orthogonal frequency division multiplexing) transmission experiment was demonstrated in order to confirm the ability to increase the data rate with a wide operational bandwidth.
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W-band millimeter-wave patch antennas on optical modulator for runway security systems 査読あり
Yusuf Nur Wijayanto, Atsushi Kanno, Hiroshi Murata, Tetsuya Kawanishi, Purwoko Adhi
2017 IEEE Conference on Antenna Measurements and Applications, CAMA 2017 2018- 79 - 82 2018年01月
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：Institute of Electrical and Electronics Engineers Inc.
We propose and report W-band millimeter-wave patch antennas on an optical modulator for foreign object debris (FOD) detection to support runway security systems. The proposed device can be used for receiving wireless millimeter-wave signals and converting to lightwave signals trough optical fiber networks for distribution. In experiment, the proposed device was fabricated successfully in an array structure. In measurement, about 40dB optical sidebands to carrier ratio was obtained. Approximately 6GHz bandwidth was also obtained using the fabricated devices.
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Photonics-based millimeter-wave radar system for handheld applications 査読あり
Atsushi Kanno, Kaori Fukunaga, Naokatsu Yamamoto, Tetsuya Kawanishi
2017 IEEE Conference on Antenna Measurements and Applications, CAMA 2017 2018- 334 - 336 2018年01月
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：Institute of Electrical and Electronics Engineers Inc.
A frequency-modulated continuous-wave (FM-CW) radar system at 94 GHz with a bandwidth of 2 GHz is configured by an optical millimeter-wave synthesizer for short-range application in handheld operation. Combination of an inertial measurement unit and a fiber-remoted radar system help realizing simple radar head configuration.
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Millimeter-Wave Radio-Over-Fiber Network for Linear Cell Systems 査読あり
Atsushi Kanno, Pham Tien Dat, Naokatsu Yamamoto, Tetsuya Kawanishi
Journal of Lightwave Technology 36 ( 2 ) 533 - 540 2018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：Institute of Electrical and Electronics Engineers Inc.
We discuss and propose millimeter-wave linear cell systems for signal distribution on railway radiocommunication systems between train and trackside, and a foreign object debris detection system for airport runways using the radio-over-fiber network technology. Linear cell configurations based on wavelength-division multiplexing (WDM) and power-splitter-based distribution networks are discussed and demonstrated experimentally. A single-sideband modulation for data transmission in an intermediate frequency over a fiber system is successfully transmitted with an ultrafast wavelength-tunable laser diode for WDM routing to track the train car within 3 μs. Radar signal distribution by an optical double-sideband suppressed-carrier modulation mitigates the dispersion effect of the fiber cable to transmit a 32-GHz signal into the remote radar heads.
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100-GHz Radio and Power over Fiber Transmission Through Multicore Fiber Using Optical-to-Radio Converter 査読あり
Toshimasa Umezawa, Pham Tien Dat, Kenichi Kashima, Atsushi Kanno, Naokatsu Yamamoto, Tetsuya Kawanishi
Journal of Lightwave Technology 36 ( 2 ) 617 - 623 2018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：Institute of Electrical and Electronics Engineers Inc.
We designed and fabricated a 100-GHz range integrated photoreceiver with zero-bias operational uni-traveling-carrier photodiode and pseudomorphic high electron mobility transistor amplifier, which performed the roles of photonic power generation and 100-GHz RF signal generation. Using the integrated photoreceiver, high data rate radio- and power-over-fiber transmission through multicore fiber communication was demonstrated. Subsequently, a bit error rate of 1× 10- 3 could be achieved with 12 Gb/s, orthogonal frequency division multiplexing, 16 quadrature amplitude modulation, and an intermediate frequency of 92 GHz. The crosstalk issue in radio- and power-over-fiber transmission through multicore fiber was discussed.
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Evaluation of wavelength dependence of integrated MZM using balanced-bridge and asymmetric X waveguide structures for high extinction ratio modulation 査読あり
Yasunari Hanawa, Yuya Yamaguchi, Atsushi Kanno, Tetsuya Kawanishi, Hirochika Nakajima
22nd Microoptics Conference, MOC 2017 2017- 292 - 293 2018年01月
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：Institute of Electrical and Electronics Engineers Inc.
In this study, we measure the wavelength dependence on the device operation of integrated Mach-Zehnder modulators in cascade. We use a balanced-bridge and asymmetric X coupler. We investigate the extinction ratio and bias voltage of these structures, and calculate the relationship between the phase change and the imperfect-bias extinction ratio.
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High extinction ratio LN modulator with low half-wave voltage and small chirp by using thin substrate 査読あり
Yuya Yamaguchi, Atsushi Kanno, Naokatsu Yamamoto, Tetsuya Kawanishi, Hirochika Nakajima
22nd Microoptics Conference, MOC 2017 2017- 36 - 37 2018年01月
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：Institute of Electrical and Electronics Engineers Inc.
We investigate the characteristics of LN modulator using thin substrate in both calculation and experiment. The fabricated active Y-branch integrated Mach-Zehnder modulator using thin LN substrate showed a good performance such as low half-wave voltage of 1.23 V, small chirp parameter of 0.013, and high extinction ratio of 44 dB.
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Pre-distortion technique for compensating QAM signal distortions generated by dual-parallel Mach-Zehnder modulators with low-extinction ratio and small-chirp parameter 査読あり
Yutaro Kodama, Yuya Yamaguchi, Atsushi Kanno, Tetsuya Kawanishi, Hirochika Nakajima
22nd Microoptics Conference, MOC 2017 2017- 50 - 51 2018年01月
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：Institute of Electrical and Electronics Engineers Inc.
We propose a pre-distortion method in the electrical domain to compensate for IQ-distortion that is attributed to some imbalances of dual-parallel Mach-Zehnder modulators for optical QAM. We confirmed the effect of the method by performing calculations, and the calculation results show the potential to improve the signal quality.
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Broadband Optical Phase Modulator Based on Electro-Optic Polymer
Yuya Yamaguchi, Atsushi Kanno, Naokatsu Yamamoto, Shingo Takano, Satoshi Oikawa, Akira Otomo, Tetsuya Kawanishi
2018 INTERNATIONAL TOPICAL MEETING ON MICROWAVE PHOTONICS (MWP) 2018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 devised a broadband optical phase modulator using an electro-optic polymer material, which is lucrative for its potential for application as the material used in high-speed modulator. It has the possibility to achieve low half-wave voltage and large bandwidth simultaneously. The measured 3-dBo bandwidth of the fabricated modulator reached 50 GHz.
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IEEE 802.11ad Packet Transmission Based SSB Optical Modulation on Radio-over-Fiber in the 90-GHz Band
Kohei Fujiwara, Atsushi Kanno, Koichi Tokita
2018 48TH EUROPEAN MICROWAVE CONFERENCE (EUMC) 712 - 715 2018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 order to realize a high-speed wireless link for a high-speed vehicle, such as a bullet train, we propose a radio over fiber (RoF) technique with a single-sideband optical modulator. The system is compliant with the IEEE 802.11ad standard and operation in the W-band is successful. The optical modulator is driven by an automatic bias controller. In this paper, we report a demonstration of the RoF system, which has archived an error vector magnitude of 4.8% on 16-QAM.
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Full-Duplex and scalable MIMO fiber-wireless seamless system in W-Band for future mobile networks 査読あり
Pham Tien Dat, Atsushi Kanno, Naokatsu Yamamoto, Tetsuya Kawanishi
Optics InfoBase Conference Papers 2018 2018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：OSA - The Optical Society
We present a scalable fiber-wireless system in W-band for the simultaneous transmission of MIMO signals in both downlink and uplink directions. Satisfactory performance is confirmed for 2 × 2 MIMO OFDM and LTE-A signals in both directions.
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Direct coupling between 2D-PDA and triangular/square shape aligned MCF for universal SDM photoreceiver 査読あり
T. Umezawa, T. Sakamoto, A. Kanno, N. Yamamoto, T. Kawanishi
Optics InfoBase Conference Papers 2018 2018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：OSA - The Optical Society
We successfully achieved the high coupling efficiencies and alignment tolerances between a newly developed 10-GHz 32-pixel two dimensional photodetector array (2D-PDA) and triangular- and square-shape-aligned multi-core fiber (MCF) for universal SDM photoreceivers.
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Radio over fiber network technology for millimeter-wave distributed radar systems 査読あり
Atsushi Kanno
Proceedings of SPIE - The International Society for Optical Engineering 10559 2018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
Millimeter-wave radar technology in a frequency band of 96 GHz is promising to detect small objects with a high range resolution because of its short wavelength and broadness of available bandwidths of 8 GHz. However, transmission distance in the millimeter-wave bands is limited by high atmospheric attenuation. Radio over fiber (RoF) technology should be implemented to transport these millimeter-wave signals to remote radar heads via an optical fiber network. In the study, we discuss the RoF network for distributed radar systems in the millimeter-wave and submillimeter-wave bands.
DOI： 10.1117/12.2287731
