論文 - 菅野 敦史
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Variable-linewidth light source based on Brownian motion random walk in optical phase
Jun Mochizuki, Keizo Inagaki, Guo-Wei Lu, Takahide Sakamoto, Yuki Yoshida, Atsushi Kanno, Naokatsu Yamamoto, Tetsuya Kawanishi
IEICE ELECTRONICS EXPRESS 17 ( 16 ) 2020年08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：IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
We proposed a variable linewidth light source using random walk phase noise. As a demonstration, the impact of the laser linewidth on the error-vector magnitude performance in the optical QPSK transmission was evaluated by using the proposed laser source experimentally, where the linewidth tunable range was from 40 kHz to 5 MHz.
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Self-organized micro-light-emitting diode structure for high-speed solar-blind optical wireless communications 査読あり
K. Kojima, Y. Yoshida, M. Shiraiwa, Y. Awaji, A. Kanno, N. Yamamoto, A. Hirano, Y. Nagasawa, M. Ippommatsu, S. F. Chichibu
Applied Physics Letters 117 ( 3 ) 031103 - 031103 2020年07月
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Characterization of a Self-Organized Deep-Ultraviolet Micro-Light-Emitting Diode Structure for High-Speed Solar-Blind Optical Wireless Communications
Kazunobu Kojima, Yuki Yoshida, Masaki Shiraiwa, Yoshinari Awaji, Atsushi Kanno, Naokatsu Yamamoto, Akira Hirano, Yosuke Nagasawa, Masamichi Ippommatsu, Shigefusa F. Chichibu
Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS 2020- 2020年05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.
Time-and spatio-resolved electroluminescence spectroscopy was performed to characterize a self-organized micro-structure in the AlGaN LEDs, which have realized gigabit-class solar-blind optical wireless communication.
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High-Speed Radio-on-Free-Space Optical Mobile Fronthaul System for Ultra-Dense Radio Access Network
Pham Tien Dat, Atsushi Kanno, Keizo Inagaki, Francois Rottenberg, Jerome Louveaux, Naokatsu Yamamoto, Tetsuya Kawanishi
2020 Optical Fiber Communications Conference and Exhibition, OFC 2020 - Proceedings 2020年03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 transmission of radio signals in high-frequency band over a seamless fiber-FSO system for ultra-dense radio access network. We successfully transmitted 80-Gb/s and 40-Gb/s 2×2 MIMO FBMC-OQAM signal in the 90-GHz band over the DL and UL direction.
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A Phase-Retrieving Coherent Receiver Based on Two-Dimensional Photodetector Array
Yuki Yoshida, Toshimasa Umezawa, Atsushi Kanno, Naokatsu Yamamoto
Journal of Lightwave Technology 38 ( 1 ) 90 - 100 2020年01月
掲載種別：研究論文（学術雑誌） 出版者・発行元：Institute of Electrical and Electronics Engineers ({IEEE})
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High-Speed Railway Communication System Using Linear-Cell-Based Radio-Over-Fiber Network and Its Field Trial in 90-GHz Bands
Atsushi Kanno, Pham Tien Dat, Naokatsu Yamamoto, Tetsuya Kawanishi, Nagateru Iwasawa, Nariya Iwaki, Kazuki Nakamura, Kunihiro Kawasaki, Naoki Kanada, Naruto Yonemoto, Yosuke Sato, Masato Fujii, Katsuya Yanatori, Nobuhiko Shibagaki, Kenichi Kashima
JOURNAL OF LIGHTWAVE TECHNOLOGY 38 ( 1 ) 112 - 122 2020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：IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
A linear-cell-based radio-over-fiber (LC-RoF) system is proposed and demonstrated for efficient mobile communication in high-speed trains without hard handover processes. The configuration of the LC-RoF network and possible router architectures are discussed for the field trial test of the proposed system and for advanced systems in the future. Via the LC-RoF network, 90-GHz, millimeter-wave radio access between the ground and a train car is operated in a centralized manner. The resulting throughput of 1.5 Gbit/s is achieved in the field trial test, which is comprised of 250-Mbaud four-subcarrier differential quadrature phase-shift keying with a forward-error correction code implemented in field-programmable gate arrays to the Shinkansen train traveling at 240 km/h without any interruptions in the connections at the change of radio access units.
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Integrated Optical Intensity Modulator with Analog Waveform-Shaping Function for PAM-4 Signal
Yuya Yamaguchi, Atsushi Kanno, Naokatsu Yamamoto, Tetsuya Kawanishi
2020 INTERNATIONAL TOPICAL MEETING ON MICROWAVE PHOTONICS (MWP 2020) 98 - 100 2020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 an optical intensity modulator whose transfer function is an approximate four-level step function. The method employed to generate the required transfer function in the intensity domain is described, and the designed response is experimentally demonstrated using the fabricated modulator.
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132 Gb/s 3×3 Full MIMO Fiber-Wireless Seamless System in W Band Using WDM/PDM RoF Transmission.
Pham Tien Dat, François Rottenberg, Atsushi Kanno, Keizo Inagaki, Jérôme Louveaux, Naokatsu Yamamoto, Tetsuya Kawanishi
European Conference on Optical Communications(ECOC) 1 - 4 2020年
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
DOI： 10.1109/ECOC48923.2020.9333373
その他リンク： https://dblp.uni-trier.de/db/conf/ecoc/ecoc2020.html#DatRKILYK20
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A Phase-Retrieving Coherent Receiver Based on Two-Dimensional Photodetector Array
Yoshida, Y., Umezawa, T., Kanno, A., Yamamoto, N.
Journal of Lightwave Technology 38 ( 1 ) 2020年
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30 GHz Radio over FSO System using High Speed 2D-PDA and Its Optical Path Switching Performance.
Toshimasa Umezawa, Pham Tien Dat, Atsushi Kanno, Kunihisa Jitsuno, Naokatsu Yamamoto, Tetsuya Kawanishi
European Conference on Optical Communications(ECOC) 1 - 4 2020年
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
DOI： 10.1109/ECOC48923.2020.9333416
その他リンク： https://dblp.uni-trier.de/db/conf/ecoc/ecoc2020.html#UmezawaDKJYK20
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FMCW linear cell radar interference mitigation through control of signal delay in radio-over-fiber links
Tetsuya Miura, Kazunori Okuda, Atsushi Kanno, Pham Tien Dat, Nobuhiko Shibagaki, Kenichi Kashima, Yosuke Sato, Masato Fujii, Ryoki Haramoto, Kiyomi Uchida, Tetsuya Hayashi, Sevia M. Idrus, Azura Hamzah, Sumiaty Ambran, Farabi Iqbal, Tetsuya Kawanishi
IEICE Electronics Express 17 ( 15 ) 1 - 5 2020年
掲載種別：研究論文（学術雑誌）
To alleviate the danger of foreign object debris on runways, Frequency Modulated Continuous Wave linear cell radar based detection systems have been evaluated in the literature. This radar uses a 90 GHz millimeter wave and radio-over-fiber (RoF) to achieve high detection accuracy and low cost. This paper reports the experimental results of interference mitigation experiments at Kuala Lumpur International Airport. False images formed due to interference can be suppressed by performing simple signal processing on more than one radar image in which the transmission delay in RoF links is discrepant.
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Wired and wireless seamless networks by photonics
Kawanishi, T., Kanno, A., Dat, P.T., Umezawa, T., Yamamoto, N.
JPhys Photonics 2 ( 1 ) 2020年
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W-Band Optoelectronic Oscillator
Hasanuzzaman, G.K.M., Iezekiel, S., Kanno, A.
IEEE Photonics Technology Letters 32 ( 13 ) 2020年
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Simple Pedestrian Detection Secondary Radar Using Frequency Doubling.
Tetsuya Kawanishi, Satomi Masuda, Erika Shigematsu, Kunihisa Jitsuno, Keizo Inagaki, Atsushi Kanno
22nd International Conference on Transparent Optical Networks(ICTON) 1 - 3 2020年
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
DOI： 10.1109/ICTON51198.2020.9203134
その他リンク： https://dblp.uni-trier.de/db/conf/icton/icton2020.html#KawanishiMSJIK20
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Optical receiver module design that improves link gain of 28 GHz RF signal over a multi-mode fiber
Yasuda, H., Aiba, T., Kanno, A., Yamamoto, N., Wakabayashi, T., Kawanishi, T.
OSA Continuum 3 ( 5 ) 2020年
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Integrated high-speed photodetector array for SDM communications
Toshimasa Umezawa, Yuki Yoshida, Atsushi Kanno, Naokatsu Yamamoto, Tetsuya Kawanishi
Asia Communications and Photonics Conference, ACP 2019- 2019年11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：OSA - The Optical Society
We present a two-dimensional high speed photodetector array as a platform technology in receivers, and its applications in space division multiplexing fiber communications, digital coherent direct detection, and free space optical communications.
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Investigation of 100 GHz Output Power Performance in Uni-travelling Carrier Photodetector under Zero-bias Condition
Toshimasa Umezawa, Atsushi Matsumoto, Atsushi Kanno, Naokatsu Yamamoto, Tetsuya Kawanishi
Progress in Electromagnetics Research Symposium 2019- 1813 - 1816 2019年06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 designed and fabricated a zero-bias operational uni-travelling carrier photodetector for high outputs, and achieved a photocurrent saturation of 7 mA and an output saturation of -1 dBm at 110 GHz at 0 V. Furthermore, we observed that the output performance at 0 V could be improved by reducing the thickness of the InP layer to 70% of that in the original design. The results of the simulation showed that the photocurrent and RF output power were nearly doubled in the 100 GHz range. The device design and the experimental results have been discussed herein.
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IEEE802.11ad packet transmission on IF-over-Fiber in the W-Band with SSB optical modulation
Kohei Fujiwara, Atsushi Kanno, Hidehiko Yamaoka, Koichi Tokita
Proceedings of European Microwave Conference in Central Europe, EuMCE 2019 618 - 621 2019年05月
掲載種別：研究論文（国際会議プロシーディングス）
© 2019 EuMCE. We developed an intermediate frequency-over-fiber technology to transmit an IEEE802.11ad packet in the W-band with a simple structure, and demonstrated it using an optical single-sideband modulation. The setup consists of an up-converter, based on a second-order harmonic mixer with a power amplifier, and an optical IQ modulator with an automatic bias control. It can transmit an IEEE802.11ad packet in 16-QAM under an error vector magnitude of 5.9% at the frequency of 88.9 GHz. The proposed IFoF scheme is suitable for a high-speed telecommunications such as the 5th generation mobile system and beyond or a high-resolution radar system in the millimeter-wave.
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25-Gbaud 4-WDM Free-Space Optical Communication Using High-Speed 2-D Photodetector Array 査読あり
Toshimasa Umezawa, Takahide Sakamoto, Atsushi Kanno, Atsushi Matsumoto, Kouichi Akahane, Naokatsu Yamamoto, Tetsuya Kawanishi
Journal of Lightwave Technology 37 ( 2 ) 612 - 618 2019年01月
掲載種別：研究論文（学術雑誌） 出版者・発行元：Institute of Electrical and Electronics Engineers (IEEE)
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Seamless convergence of fiber and wireless systems for 5G and beyond networks
Dat, P.T., Kanno, A., Yamamoto, N., Kawanishi, T.
Journal of Lightwave Technology 37 ( 2 ) 592 - 605 2019年01月
掲載種別：研究論文（学術雑誌） 出版者・発行元：Institute of Electrical and Electronics Engineers ({IEEE})
