論文 - 菅野 敦史
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On the Impact of Tomlinson-Harashima Precoding in Optical PAM Transmissions for Intra-DCN Communication 査読あり
Kengo Matsumoto, Yuki Yoshida, Akihiro Maruta, Atsushi Kanno, Naokatsu Yamamoto, Ken-ichi Kitayama
2017 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXHIBITION (OFC) 2017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
Anti-chromatic dispersion capability of the Tomlinson-Harashima precoding in optical PAM transmissions is investigated analytically and experimentally. The use of THP enables nearly two orders of magnitude BER performance improvement in a 30-Gbaud PAM-4 transmission over a 20-km SSMF.
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Coherent Radio-over-Few-Mode-Fiber 査読あり
Ken-ichi Kitayama, Nikolaos. P. Diamantopoulos, Yuki Yoshida, Akihiro Maruta, Atsushi Kanno, Tetsuya Kawanishi, Ryo Maruyama, Kazuhiko Aikawa, Nobuo Kuwaki
2017 CONFERENCE ON LASERS AND ELECTRO-OPTICS PACIFIC RIM (CLEO-PR) 2017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
W-band coherent radio-over-few-mode-fiber transmission system is presented, featuring an optical/wireless converged MIMO DSP. Power fading of radio signals incurred by mode coupling-induced crosstalk and its mitigation technique by the mode assignment and filtering are studied.
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Vector Modulation Using EA Modulator 査読あり
Ukrit Mankong, Praimezt Mekbungwan, Keizo Inagaki, Atsushi Kanno, Tetsuya Kawanishi
2017 CONFERENCE ON LASERS AND ELECTRO-OPTICS PACIFIC RIM (CLEO-PR) 2017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 method to achieve vector modulation in an electroabsorption modulator with help of a directly modulated laser. We discuss the challenges involved and demonstrate the combined phase and amplitude modulation theoretically and experimentally using a commercial electroabsorption modulator integrated laser.
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Radio Over Fiber Signal Generation and Distribution and Its Application to Train Communication Network 査読あり
Atsushi Kanno, Pham Tien Dat, Naokatsu Yamamoto, Tetsuya Kawanishi, Naruto Yonemoto, Vo Nguyen Quoc Bao, Tan Hanh, Le Quoc Cuong, Kenichi Kashima, Nobuhiko Shibagaki
2017 CONFERENCE ON LASERS AND ELECTRO-OPTICS PACIFIC RIM (CLEO-PR) 2017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
Radio over fiber signal generation by an ultra-fast wavelength-tunable laser under wavelength-division-multiplexing configuration is demonstrated for radio signal delivery to remote sites in a linear-cell-based distributed antenna system. Application to linear-cell train communication system is discussed.
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光導波路型表面弾性波オプトメカニクス系の構築
岡田 彪利, 山口 祐也, 山崎 歴舟, 野口 篤史, 田渕 豊, 菅野 敦史, 山本 直克, 宇佐見 康二, 中村 泰信
日本物理学会講演概要集 72 436 - 436 2017年
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High bitrate mm-wave links using RoF technologies and its non-telecom application 査読あり
Atsushi Kanno
Optics InfoBase Conference Papers 2017 2017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
Millimeter-wave RoF technology is discussed for application to high bitrate wireless communication in fiber-wireless bridge configuration and railway communication systems. Non-telecommunication application such as a millimeter-wave radar system is also shown in the paper.
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Coexistence and Transmission of Multiple Radios over Seamless Fiber-Wireless Systems 査読あり
Pham Tien Dat, Atsushi Kanno, Naokatsu Yamamoto, Tetsuya Kawanishi
BROADBAND ACCESS COMMUNICATION TECHNOLOGIES XI 10128 2017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 present efficient solutions for simultaneous transmission of multiple radio signals over seamless fiber wireless systems, including radio signals in legacy microwave bands and in high frequency bands. At central stations, radio signals can be mapped onto the same optical transport channel using data mapping algorithms and/or subcarrier multiplexing technique. After the fiber transmission, the received signals can be down-converted, digitized, and de-mapped to recover the originally transmitted signals. We present and compare two different methods, including a radio-over-fiber system and optical up-conversion at remote sites and an intermediate-frequency-over-fiber system and an electrical up-conversion at remote sites. We experimentally confirm the suitability of both the transmission methods, and achieve satisfactory performance for all signals, including LTE-advanced, orthogonal frequency-division multiplexing, and filtered-orthogonal frequency-division multiplexing signals. In particular, the latter method can provide a high optical spectral efficiency and low fiber dispersion effect and is suitable for ultra-dense small cell deployment in future mobile networks.
DOI： 10.1117/12.2251254
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10-GHz 32-pixel 2-D photodetector array for advanced optical fiber communications 査読あり
Toshimasa Umezawa, Takahide Sakamoto, Kouichi Akahane, Atsushi Matsumoto, Atsushi Kanno, Naokatsu Yamamoto, Tetsuya Kawanishi
Optics InfoBase Conference Papers 2017 2017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 studied a 10-GHz 32-pixel two-dimensional photodetector array for advanced optical fiber communications and LIDAR applications. Electromagnetic field simulation revealed the RF crosstalk problem between pixels. A fabricated high-speed photodetector array will be discussed.
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Radio over fiber-based radio relay link for indoor and in-car applications towards 5G/IoT era 査読あり
Atsushi Kanno, Naokatsu Yamamoto, Tetsuya Kawanishi
Optics InfoBase Conference Papers 2017 2017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
Radio over single-mode, multimode, and plastic optical fiber links are demon-strated as a radio relay link for improvement of coverage areas. These techniques are capable for different deployment scenarios in several indoor conditions.
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High responsivity 100 GHz waveguide UTC photodetector 査読あり
T. Umezawa, K. Akahane, A. Matsumoto, A. Kanno, N. Yamamoto, T. Kawanishi
BROADBAND ACCESS COMMUNICATION TECHNOLOGIES XI 10128 2017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 present a double cladding, high-mesa-type waveguide UTC photodetector with an improved the responsivity. In this device structure, an InGaAs thin core layer was sandwiched by p-InP/InGaAsP and n-InP/InGaAsP cladding layers, including a UTC structure, in order to obtain a good optical coupling between the waveguide and the fiber. By comparing the resulting mode field with that obtained with a single cladding layer structure, we confirmed that the vertical mode field was enlarged. Without a spot size converter, the measured responsivity was as high as 0.6 A/W at 1550 nm, which suggests a responsivity three times higher than that of back-illuminated structures, and higher responsivity than that of previous reports. A high frequency performance (f(3dB) = 100 GHz) was also measured. The device structure, including the layer, doping level conditions, and optical fiber coupling results are discussed, and its performance is characterized in detail.
DOI： 10.1117/12.2250246
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光導波路型表面弾性波オプトメカニクス系の構築
岡田 彪利, 山口 祐也, 山崎 歴舟, 野口 篤史, 田渕 豊, 菅野 敦史, 山本 直克, 宇佐見 康二, 中村 泰信
日本物理学会講演概要集 72 436 - 436 2017年
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Radio over fiber-based radio relay link for indoor and in-car applications towards 5G/IoT era 査読あり
Atsushi Kanno, Naokatsu Yamamoto, Tetsuya Kawanishi
Optics InfoBase Conference Papers 2017 2017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
Radio over single-mode, multimode, and plastic optical fiber links are demon-strated as a radio relay link for improvement of coverage areas. These techniques are capable for different deployment scenarios in several indoor conditions.
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Optical-fiber-connected 300-GHz FM-CW radar system 査読あり
Atsushi Kanno, Norihiko Sekine, Akifumi Kasamatsu, Naokatsu Yamamoto, Tetsuya Kawanishi
Proceedings of SPIE - The International Society for Optical Engineering 10189 2017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
300-GHz frequency-modulated continuous-wave (FM-CW) radar system operated by radio over fiber technologies is configured and demonstrated. Centralized signal generator, which is based on an optical frequency comb generation, provides high-precise FM-CW radar signal. The optical signal is easy to be transported to radar heads through an optical fiber network. Optical-modulator-based optical frequency comb generator is utilized as an optical frequency multiplier from a microwave signal to a 300-GHz terahertz signal by an optical modulation technique. In the study, we discuss the configuration of the network, signal generator and remote radar head for terahertz-wave multi-static radar system.
DOI： 10.1117/12.2262505
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Millimeter- and Terahertz-Wave Over Fiber Technologies for High-Speed Communications and Non-Telecom Applications 査読あり
Atsushi Kanno
BROADBAND ACCESS COMMUNICATION TECHNOLOGIES XI 10128 2017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
Millimeter-wave and terahertz-wave technologies are promising solutions for high-speed wireless communication as well as nondestructive imaging due to its high frequency (short wavelength) nature. In the study, we propose and demonstrate high-speed wireless communication in millimeter- and terahertz-wave bands adopted by advanced optical fiber communication technologies: combination of a radio over fiber (RoF) manner for generation of the signals and a high-speed digital signal processing implemented in a receiver. The RoF technique is also capable for a local-oscillator signal transport over the fiber to the remote sites. Fiber-remoted distributed radar system is also discussed in the paper.
DOI： 10.1117/12.2250092
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High-voltage optical power delivery using a light-wave-modulation method 査読あり
Naokatsu Yamamoto, Toshimasa Umezawa, Atsushi Matsumoto, Kouichi Akahane, Atsushi Kanno, Atsushi Kobayashi, Hiroshi Takai
BROADBAND ACCESS COMMUNICATION TECHNOLOGIES XI 10128 2017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
Optical power-delivery systems are applied to distribute electrical power over optical fibers for systems such as remote wireless radio heads. Typically, the electrical voltage at the receiver side is low, around 1.0 V, owing to the use of a long-wavelength carrier. Consequently, we recently proposed a light-wave-modulation method for increasing the received electrical voltage. A 940-nm high-power laser was directly modulated to form a modulated light wave. We also used a small inductor to generate an induced electromotive force from the modulated light wave. We successfully obtained a peak voltage over 18 V using this simple technique.
DOI： 10.1117/12.2250819
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90 Gb/s hybrid integrated photoreceiver module with high speed 1.5 μm-band QD-SOA
A. Matsumoto, T. Umezawa, K. Akahane, A. Kanno, N. Yamamoto, T. Kawanishi
Conference Digest - IEEE International Semiconductor Laser Conference 2016年12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 investigated fundamental characteristics of a hybrid integrated photoreceiver module with a 1.5 μm-band quantum dot semiconductor optical amplifier (QD-SOA) and conventional pin-photodiode (pin-PD) as a first stage. The results indicated the photoreceiver integrated with a QD-SOA and QD-PD has the potential to be operated for signals over 100 Gb/s.
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Seamless Fiber-Wireless Bridge in the Millimeter- and Terahertz-Wave Bands 査読あり
Atsushi Kanno, Pham Tien Dat, Norihiko Sekine, Iwao Hosako, Naokatsu Yamamoto, Yuki Yoshida, Ken-Ichi Kitayama, Tetsuya Kawanishi
JOURNAL OF LIGHTWAVE TECHNOLOGY 34 ( 20 ) 4794 - 4801 2016年10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
Fiber-wireless transmission in the terahertz-wave band as well as in the millimeter-wave band is the key for a seamless integration of radio and optical networks in a physical layer. Advanced optical fiber communication technology enables a high precision direct waveform transfer between optical and radio domains. For realization of a seamless conversion, an optical-terahertz converter is configured with optical heterodyning for an optical-to-terahertz conversion. Analog optical modulation techniques by an input millimeter-wave signal and an intermediate frequency component after a frequency downconversion are utilized for a terahertz-to-optical conversion. A quadrature phase-shift keying signal transmission in an optical-fiber-to-radio-to-optical-fiber link (fiber-wireless bridge) is successfully demonstrated with the 90 and 300-GHz signals, simultaneously, using an optical frequency comb source. The possible transmission distance in severe weather conditions in these frequency bands is also discussed.
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5G TRANSPORT NETWORKS: THE NEED FOR NEW TECHNOLOGIES AND STANDARDS
Pham Tien Dat, Atsushi Kanno, Naokatsu Yamamoto, Tetsuya Kawanishi
IEEE COMMUNICATIONS MAGAZINE 54 ( 9 ) 18 - + 2016年09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
Mobile transport networks will play a vital role in future 5G and beyond networks. In particular, access transport networks connecting radio access with core networks are of critical importance. They will be required to support massive connectivity, super high data rates, and real-time services in a ubiquitous environment. To attain these targets, transport networks should be constructed on the basis of a variety of technologies and methods, depending on application scenarios, geographic areas, and deployment models. In this article, we present several technologies, including analog radio-over-fiber transmission, intermediate-frequency-over-fiber technology, radio-on-radio transmission, and the convergence of fiber and millimeter-wave systems, that can facilitate building such effective transport networks in many use cases. For each technology, we present the system concept, possible application cases, and demonstration results. We also discuss potential standardization and development directions so the proposed technologies can be widely used.
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Mitigation of modal crosstalk-induced power fading in mode division multiplexed W-band RoF links
N. P. Diamantopoulos, Y. Takami, Y. Yoshida, A. Maruta, A. Kanno, N. Yamamoto, T. Kawanishi, R. Maruyama, N. Kuwaki, S. Matsuo, K. Kitayama
2016 Optical Fiber Communications Conference and Exhibition, OFC 2016 2016年08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.
To avoid the modal crosstalk-induced power fading, a mode assignment technique has been proposed and experimentally demonstrated for mode division multiplexed W-band radio-over-fiber links.
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Transmission of multiband wireless signals over a seamless IM/DD fiber-MMW system 査読あり
Nguyen Toan Van, Pham Tien Dat, Atsushi Kanno, Naokatsu Yamamoto, Vo Nguyen Quoc Bao, Tetsuya Kawanishi
IEICE ELECTRONICS EXPRESS 13 ( 15 ) 2016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
This paper proposes a high-speed multiband filtered-orthogonal frequency division multiplexing (F-OFDM) signal transmission over a seamless fiber-millimeter-wave (MMW) system at 92.5 GHz. The system employs a frequency and phase stabilized optical MMW signal generation at the transmitter and a simple direct detection at the receiver. We confirm a successful transmission of multiband F-OFDM signal over a seamless 20-km single mode fiber (SMF) and 1-m 92.5-GHz wireless system. Compared to the single-band and multiband OFDM signal transmission, the proposed system can provide a much better performance, particularly at the edges of each band.
