論文 - 菅野 敦史
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Space Division Multiplexed Transmission of 109-Tb/s Data Signals Using Homogeneous Seven-Core Fiber
Jun Sakaguchi, Yoshinari Awaji, Naoya Wada, Atsushi Kanno, Tetsuya Kawanishi, Tetsuya Hayashi, Toshiki Taru, Tetsuya Kobayashi, Masayuki Watanabe
JOURNAL OF LIGHTWAVE TECHNOLOGY 30 ( 4 ) 658 - 665 2012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 achieved record 109-Tb/s transmission over 16.8 km, using space division multiplexing (SDM) together with conventional multiplexing technology. 7-core SDM, 97 WDM (100-GHz spacing), 2 x 86 Gb/s PDM-QPSK signals were used. The spectral efficiency was 11.2 b/s/Hz. SDM transmission was realized using a multi-core fiber with ultra-low-crosstalk (less than -90.0 dB/km at 1550 nm) and high performance SDM MUX/DEMUX. The overall SDM crosstalk of -53 dB caused almost no penalty for the PDM-QPSK transmission.
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Extinction-Ratio-Independent Method for Total Chirp Measurement of Integrated Parallel Mach-Zehnder-Modulators 査読あり
Pham Tien Dat, Atsushi Kanno, Keizo Ingaki, Tetsuya Kawanishi
2012 IEEE INTERNATIONAL TOPICAL MEETING ON MICROWAVE PHOTONICS (MWP) 128 - 131 2012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 method is proposed for measuring total chirp of integrated parallel Mach-Zehnder-type modulators by analyzing optical spectrum components. It can be applied to characterize the integrated modulators with finite extinction ratio and permit to evaluate the chirp parameter at a specific frequency. An experiment measurement is then conducted to demonstrate the proposed method for an optical FSK modulator. The obtained result reveals the effectiveness of this chirp measurement method.
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Digital-Signal-Processing-Aided Ultra-High-Speed Radio-over-Fiber Technology for Highly Resilient Mobile Backhaul 査読あり
Toshiaki Kuri, Atsushi Kanno, Iwao Hosako, Tetsuya Kawanishi, Yoshihiro Yasumura, Yuki Yoshida, Ken-ichi Kitayama
2012 IEEE INTERNATIONAL TOPICAL MEETING ON MICROWAVE PHOTONICS (MWP) 84 - 87 2012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
This paper describes a scenario of highly resilient mobile backhaul using the radio-over-fiber (RoF) technology. RoF-based millimeter-wave high-speed transmission is useful for quick recovery from severe physical damage of the network infrastructure. As a possible approach, we demonstrated polarization division multiplexing optical and 2x2 multi-input multi-output radio seamless hybrid downlink transmission over 20-km-long standard single mode fiber and 0.9-m free space with a digital signal processing technique for the 10-Gbaud QPSK format.
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Coherent Wired/Wireless Seamless Transmission with Combination of Photonic Digital and Analogue Techniques 査読あり
Atsushi Kanno, Toshiaki Kuri, Iwao Hosako, Tetsuya Kawanishi, Yuki Yoshida, Ken-ichi Kitayama
2012 IEEE PHOTONICS CONFERENCE (IPC) 636 - + 2012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
Digital coherent detection and radio-over-fiber technologies allow the realization of direct seamless conversion between optical and radio networks. We propose a photonic digital transmission with analogue signal synthesis technique to provide high-speed simultaneous transmissions.
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Coherent radio-over-fiber and millimeter-wave radio seamless transmission system for resilient access networks 査読あり
A. Kanno, P. T. Dat, T. Kuri, I. Hosako, T. Kawanishi, Y. Yoshida, Y. Yasumura, K. Kitayama
IEEE Photonics Journal 4 ( 6 ) 2196 - 2204 2012年
記述言語：英語 掲載種別：研究論文（学術雑誌）
We propose a millimeter-wave (MMW) coherent radio-over-fiber (RoF) transmission system for application to an access network with a direct broadband last-mile wireless connection to an optical fiber network. The coherent RoF system comprises an optical two-tone RoF signal generator with an advanced modulation format for high-throughput transmission and employs a digital-signal-processing-aided coherent detection technique for MMW radio, which is a technique similar to that of optical digital coherent detection. As proof of concept, a 20-GBd quadrature phase-shift keying RoF transmission over 20 km of optical fiber before a radio transmission over 20 m of air is demonstrated. The results of the radio transmissions using Cassegrain-type antenna pairs with a gain of 50 dBi are consistent with theoretical estimations
this suggests the possibility of developing a midrange transmission system using a high-power MMW amplifier. © 2012 IEEE. -
Carrier frequency offset compensation for 10-Gbaud QPSK RoF transmission at 90 GHz with free-running optical LO signal 査読あり
Atsushi Kanno, Toshiaki Kuri, Iwao Hosako, Tetsuya Kawanishi, Yoshihiro Yasumura, Yuki Yoshida, Ken-Ichi Kitayama
IEEE MTT-S International Microwave Symposium Digest 2012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 demonstrate W-band (75-110 GHz) RoF radio signal transmission with two free-running lasers using an optical heterodyne technique. The combination of a laser located at a base station for the optical local oscillator and a data-modulated optical signal from a central office provides a W-band radio signal. The carrier frequency offset fluctuation within 6 MHz can be mitigated by digital signal processing at the receiver side, in a similar manner to that of optical digital coherent detection. © 2012 IEEE.
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Analyses of carrier frequency fluctuation of W-band RoF signals using two free-running lasers for high-speed RoF transmission 査読あり
Atsushi Kanno, Toshiaki Kuri, Iwao Hosako, Tetsuya Kawanishi, Yoshihiro Yasumura, Yuki Yoshida, Ken-ichi Kitayama
2012 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) 2012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 analyze a carrier frequency fluctuation for RoF transmission with two freer running lasers. Obtained fluctuation within 6 MHz can be mitigated by digital signal processing as a same manner of digital coherent detection. (C) 2011 Optical Society of America
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90-GHz Radio-on-Radio-over-Fiber System for Linearly Located Distributed Antenna Systems 査読あり
Atsushi Kanno, Pham Tien Dat, Tetsuya Kawanishi, Naruto Yonemoto, Nobuhiko Shibagaki
2012 PHOTONICS GLOBAL CONFERENCE (PGC) 2012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
To realize a high-speed and high-capacity transmission link for fast mobile vehicles such as a bullet train, we propose a wavelength-division-muitiplexing radio-on-radio-over-fiber (WDM-RoRoF) system with a linearly located distributed antenna system (DAS) on the 90-GHz band. All the conventional microwave (MW) radio signals such as mobile telecommunication and broadcast signals are encapsulated in a single millimeter-wave (MMW) carrier radio. Centralized control at a central office using the information of the position of a car can optimize and distribute the suitable RoRoF signal to each remote cell over optical fibers. An optical two-tone generator with an optical modulator can easily generate a 90-GHz RoRoF signal, and then, a high-speed photomixer directly converts from an RoRoF signal to an MMW RoR signal, which is composed of an MW signal with a 90-GHz carrier component, for irradiation over air. Heterodyne frequency down-conversion performs the direct frequency conversion from the MMW signal to an MW signal available to consumers.
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20-Gbaud QPSK RoF and millimeter-wave radio transmission 査読あり
Atsushi Kanno, Toshiaki Kuri, Iwao Hosako, Tetsuya Kawanishi, Yoshihiro Yasumura, Yuki Yoshida, Ken-Ichi Kitayama
Technical Digest - 2012 17th Opto-Electronics and Communications Conference, OECC 2012 735 - 736 2012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 successfully demonstrate 20-Gbaud (37.38 Gb/s) QPSK RoF and 100-GHz radio transmission over 20-km SMF and 0.3-m air. ADC with a bandwidth of 30 GHz can demodulate 40-GHz-bandwidth signal using digital coherent detection technique. © 2012 IEEE.
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20-Gbaud QPSK optical and radio transmission using high-gain antennas for resilient access networks 査読あり
Atsushi Kanno, Pham Tien Dat, Toshiaki Kuri, Iwao Hosako, Tetsuya Kawanishi, Yuki Yoshida, Yoshihiro Yasumura, Ken-Ichi Kitayama
2012 IEEE Photonics Society Summer Topical Meeting Series, PSST 2012 145 - 146 2012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）
20-Gbaud QPSK transmission over 20-km SMF for optical and 7.5-m free space for 90-GHz radio is successfully demonstrated with 50-dBi Cassegrain antennas. This configuration will be feasible for kilometer-order distance transmission. © 2012 IEEE.
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16-Gbaud QPSK Radio Transmission using Optical Frequency Comb with Recirculating Frequency Shifter for 300-GHz RoF Signal 査読あり
Atsushi Kanno, Isao Morohashi, Toshiaki Kuri, Iwao Hosako, Tetsuya Kawanishi, Yoshihiro Yasumura, Yuki Yoshida, Ken-ichi Kitayama
2012 IEEE INTERNATIONAL TOPICAL MEETING ON MICROWAVE PHOTONICS (MWP) 298 - 301 2012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 300-GHz-band radio transmission with a digital coherent detection technique. Quadrature-phase-shift-keying modulation can provide a data rate of 29.9 Gb/s, with 7% forward error correction overhead. A frequency-locked optical frequency comb for a 300-GHz radio-over-fiber signal can be generated by a recirculating frequency shifter with a single-sideband suppressed-carrier modulator in an amplified optical fiber loop.
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SDM technology beyond 100 Tb/s 査読あり
J. Sakaguchi, B. J. Puttnam, W. Klaus, Y. Awaji, N. Wada, A. Kanno, T. Kawanishi
Technical Digest - 2012 17th Opto-Electronics and Communications Conference, OECC 2012 553 - 554 2012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 review our progress in space division multiplexed (SDM) transmission technology enabling 100-300 Tb/s transmission. As the key components, we describe our free-space SDM multiplexer (MUX) and demultiplexer (DEMUX) and novel multi-core fibers. © 2012 IEEE.
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High-Speed Frequency Control for Optical Data Transmission and Radio-on-Fiber Systems 査読あり
Tetsuya Kawanishi, Atsushi Kanno, Keizo Inagaki
2012 14TH INTERNATIONAL CONFERENCE ON TRANSPARENT OPTICAL NETWORKS (ICTON 2012) 2012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
This presentation focuses on high-speed frequency control of radio-wave and lightwave signals using optical modulation. Frequency multiplication in optical modulators also plays important roles. Optical two-tone signals whose frequency separation can be up to 160 GHz would be useful for reference signals in array antennas, photodetector estimation, etc. In addition, this technique can be applicable for radar sensing, signal monitoring and performance diagnostics.
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SDM technology beyond 100 Tb/s 査読あり
J. Sakaguchi, B. J. Puttnam, W. Klaus, Y. Awaji, N. Wada, A. Kanno, T. Kawanishi
Technical Digest - 2012 17th Opto-Electronics and Communications Conference, OECC 2012 553 - 554 2012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 review our progress in space division multiplexed (SDM) transmission technology enabling 100-300 Tb/s transmission. As the key components, we describe our free-space SDM multiplexer (MUX) and demultiplexer (DEMUX) and novel multi-core fibers. © 2012 IEEE.
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Polarization division multiplexed 2x10-Gbps transmissions over 10-km long holey fiber in 1.0-mu m waveband photonic transport system 査読あり
Naokatsu Yamamoto, Atsushi Kanno, Kouichi Akahane, Tetsuya Kawanishi, Yu Omigawa, Yasuaki Kurata, Hideyuki Sotobayashi
OPTICAL METRO NETWORKS AND SHORT-HAUL SYSTEMS IV 8283 2012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
Photonic transport systems in the C+L bands have been extensively employed in conventional networks. The continuously expanding demand for greater photonic network capacities has created the need for the use of additional wavebands to strengthen the transmission capacities. We recently focused on the use of a novel wavelength band such as 1.0-mu m (thousand band: T band), together with the conventional C and L bands, to enhance the usable optical frequency resources in future photonic networks employing waveband division multiplexing. Furthermore, we successfully demonstrated an ultra-broadband T-band photonic transport system using a holey fiber (HF) transmission line to create a wide range of usable optical frequency resources over 8.4 THz (wavelength range: 1037-1068 nm). In constructing an ultra-broadband photonic transport system for the T, C, and L bands, HF is considered to be a great candidate for an ultra-broadband and high-capacity data transmission line. In this study, we demonstrated a polarization division multiplexing (PDM) photonic transport system for doubling the optical frequency resources in the T band. Error-free PDM photonic transmissions in the T band with a clear eye opening at 10 Gb/s were successfully achieved over a long distance using an 11.4-km HF transmission line for the first time. To upgrade the present photonic network system, we believe the technologies of the demonstrated T-band PDM, together with WDM photonic transport systems using the >10-km long HF transmission line, represent a pioneering breakthrough in the use of ultra-broadband optical frequency resources.
DOI： 10.1117/12.907955
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Phase noise analysis of an optical frequency comb using single side-band suppressed carrier modulation in an amplified optical fiber loop 査読あり
Atsushi Kanno, Tetsuya Kawanishi
IEICE ELECTRONICS EXPRESS 9 ( 18 ) 1473 - 1478 2012年
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
Coherent optical two-tone generation using an optical frequency comb generator based on an amplified optical fiber loop is successfully demonstrated. The observed phase noises in the 100-GHz band are less than -80 dBc/Hz at 1 MHz. This method is suitable for high-speed radio communication based on advanced modulation techniques.
DOI： 10.1587/elex.9.1473
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Optical and Radio Seamless MIMO Transmission with 20-Gbaud QPSK 査読あり
Atsushi Kanno, Toshiaki Kuri, Iwao Hosako, Tetsuya Kawanishi, Yoshihiro Yasumura, Yuki Yoshida, Ken-ichi Kitayama
2012 38TH EUROPEAN CONFERENCE AND EXHIBITION ON OPTICAL COMMUNICATIONS (ECOC) 2012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
MIMO radio transmission seamlessly converted from an optical DP-QPSK signal is performed with a polarization- diversity digital coherent detection technique. Obtained total capacity of radio transmission is achieved 74.4 Gb/s with 7% FEC overhead.
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LiNbO 3 modulator for modern optical communications 査読あり
Tetsuya Kawanishi, Atsushi Kanno
Technical Digest - 2012 17th Opto-Electronics and Communications Conference, OECC 2012 65 - 66 2012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）
This paper describes recent progress of highspeed lithium niobate (LN) modulator technologies for digital and analogue applications. LN provides precise and high-speed optical modulation. Various types of signals can be generated by using integrated devices. © 2012 IEEE.
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Large-scale space division multiplexed transmission through multi-core fiber 査読あり
Jun Sakaguchi, Benjamin J. Puttnam, Werner Klaus, Yoshinari Awaji, Naoya Wada, Atsushi Kanno, Tetsuya Kawanishi
2012 ASIA COMMUNICATIONS AND PHOTONICS CONFERENCE (ACP) 2012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
Rapid progress in multi-core fibers and space division multiplexing technologies has enabled large-capacity transmission exceeding the conventional single-core fiber capacity limit of approximately 100 Tb/s. In this invited paper, we review such progress and achievements.
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Investigating Self-Homodyne Coherent Detection in a 19-core Spatial-Division-Multiplexed Transmission Link 査読あり
Benjamin J. Puttnam, Jun Sakaguchi, Werner Klaus, Yoshinari Awaji, Jose-Manuel Delgado Mendinueta, Naoya Wada, Atsushi Kanno, Tetsuya Kawanishi
2012 38TH EUROPEAN CONFERENCE AND EXHIBITION ON OPTICAL COMMUNICATIONS (ECOC) Tu.3.C.3 2012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 the performance of self-homodyne coherent system based on 19(star) SDM and 16(star) WDM channels. We show that self-homodyne detection, with pilot-tone transmitted on 1 MCF core, is compatible with SDM transmission systems but inter-core crosstalk can limit potential advantages.
