Optical FSK/IM Signal Generation Using an Integrated Optical FSK Modulator. - Tetsuya Kawanishi; Kaoru Higuma; Takahisa Fujita; Junichiro Ichikawa; Satoshi Shinada; Takahide Sakamoto; Masayuki Izutsu (IEICE Electron. Express, 2004)

Optical frequency comb generator using optical fiber loops with single-sideband modulation. - Tetsuya Kawanishi; Takahide Sakamoto; Satoshi Shinada; Masayuki Izutsu (IEICE Electron. Express, 2004)

10Gbit/s FSK transmission over 95km SMF using a LiNbO3 modulator. - Takahisa Fujita; Tetsuya Kawanishi; Kaoru Higuma; Junichiro Ichikawa; Satoshi Shinada; Takahide Sakamoto; Masayuki Izutsu (IEICE Electron. Express, 2005)

Optical FSK transmission with group delay compensated balance detection. - Tetsuya Kawanishi; Takahisa Fujita; Kaoru Higuma; Junichiro Ichikawa; Takahide Sakamoto; Masayuki Izutsu (IEICE Electron. Express, 2005)

Integrated reciprocating optical modulator using phase-shifted fiber Bragg grating. - Tetsuya Kawanishi; Satoshi Oikawa; Kiichi Yoshiara; Satoshi Shinada; Takahide Sakamoto; Masayuki Izutsu (IEICE Electron. Express, 2005)

Pulse-carving technique for suppressing transient state in external wideband FSK modulation. - Takahide Sakamoto; Tetsuya Kawanishi; Masayuki Izutsu (IEICE Electron. Express, 2005)

Amplitude modulation on millimeter-wave signal with low driving voltage using reciprocating optical modulator. - Takahide Sakamoto; Tetsuya Kawanishi; Satoshi Shinada; Masayuki Izutsu (IEICE Electron. Express, 2005)

Programmable Coupler Ladder Based on Lithium Niobate Y-Junction Reflector. - Jianxiao Chen; Tetsuya Kawanishi; Kaoru Higuma; Satoshi Shinada; William S. C. Chang; Masayuki Izutsu; Paul K. L. Yu (IEICE Trans. Electron., 2005)

A bias condition monitor technique for the nested Mach-Zehnder modulator. - Kaoru Higuma; Shingo Mori; Tetsuya Kawanishi; Masayuki Izutsu (IEICE Electron. Express, 2006)

Optical filter characterization by using optical frequency sweep technique with a single sideband modulator. - Tetsuya Kawanishi; Takahide Sakamoto; Masayuki Izutsu (IEICE Electron. Express, 2006)

An optical grating filter dry-etched on a LiNbO3 substrate. - Satoshi Shinada; Tetsuya Kawanishi; Takahide Sakamoto; Masayuki Izutsu (IEICE Electron. Express, 2006)

Optical amplification characteristics of Ti-diffused waveguides on Erbium-doped LiNbO3 crystal. - So Kogahara; Satoshi Shinada; Shinya Nakajima; Tetsuya Kawanishi; Hirochika Nakajima; Masayuki Izutsu (IEICE Electron. Express, 2007)

Novel Functionality and Material for Si-Photonics: Two-Photon Absorption Switching and Antimonide Hetero-Genius Epitaxy. - Tak-Keung Liang; Kouichi Akahane; Naokatsu Yamamoto; Luis Romeu Nunes; Tetsuya Kawanishi; Masahiro Tsuchiya (IEICE Trans. Electron., 2007)

A Resonant Type LiNbO3 Optical Modulator Array with Micro-Strip Antennas. - Satoshi Shinada; Tetsuya Kawanishi; Masayuki Izutsu (IEICE Trans. Electron., 2007)

Low-Temperature Au-to-Au Bonding for LiNbO3/Si Structure Achieved in Ambient Air. - Ryo Takigawa; Eiji Higurashi; Tadatomo Suga; Satoshi Shinada; Tetsuya Kawanishi (IEICE Trans. Electron., 2007)

Simple, low fluctuation voltage signal generation for 8-Gb/s quadrature amplitude modulation using dual-parallel Mach-Zehnder modulator. - Akito Chiba; Takahide Sakamoto; Tetsuya Kawanishi; Masayuki Izutsu (IEICE Electron. Express, 2008)

Integrated Lithium Niobate Mach-Zehnder Interferometers for Advanced Modulation Formats. - Tetsuya Kawanishi; Takahide Sakamoto; Akito Chiba (IEICE Trans. Electron., 2009)

100 Gb/s DQPSK field trial: Live video transmission over an operating LambdaXtreme® network. - Gregory Raybon; Peter J. Winzer; Haoyu Song 001; Andrew Adamiecki; Stephen Corteselli; Alan H. Gnauck; Thomas Kissell; Daniel A. Fishman; Nat M. Denkin; Yuan-Hua Claire Kao; Terry L. Downs; Anthony Carenza; et al. (Bell Labs Tech. J., 2010)

120-Gb/s NRZ-DQPSK signal generation by a thin-lithium-niobate-substrate modulator. - Atsushi Kanno; Takahide Sakamoto; Akito Chiba; Tetsuya Kawanishi; Kaoru Higuma; Masaaki Sudou; Junichiro Ichikawa (IEICE Electron. Express, 2010)

LiNbO3 optical switch using asymmetric X-junction waveguide for broadband optical network node. - Takuya Sakamaki; Yu Narita; Hiroyuki Tsuda; Shinya Nakajima; Tetsuya Kawanishi (IEICE Electron. Express, 2010)

Beam steering array antenna controlled by optical wavelength. - Keizo Inagaki; Takashi Ohira; Tetsuya Kawanishi; Masayuki Izutsu (IEICE Electron. Express, 2011)

20-Gb/s QPSK W-band (75-110GHz) wireless link in free space using radio-over-fiber technique. - Atsushi Kanno; Keizo Inagaki; Isao Morohashi; Takahide Sakamoto; Toshiaki Kuri; Iwao Hosako; Tetsuya Kawanishi; Yuki Yoshida; Ken-ichi Kitayama (IEICE Electron. Express, 2011)

Parallel Mach-Zehnder modulators for quadrature amplitude modulation. - Tetsuya Kawanishi (IEICE Electron. Express, 2011)

90 Gbaud NRZ-DP-DQPSK Modulation with Full-ETDM Technique Using High-Speed Optical IQ Modulator. - Atsushi Kanno; Takahide Sakamoto; Akito Chiba; Masaaki Sudo; Kaoru Higuma; Junichiro Ichikawa; Tetsuya Kawanishi (IEICE Trans. Electron., 2011)

Synthesis of 16 Quadrature Amplitude Modulation Using Polarization-Multiplexing QPSK Modulator. - Isao Morohashi; Takahide Sakamoto; Masaaki Sudo; Atsushi Kanno; Akito Chiba; Junichiro Ichikawa; Tetsuya Kawanishi (IEICE Trans. Commun., 2011)

Optoelectronic frequency response measurement of photodiodes by using high-extinction ratio optical modulator. - Keizo Inagaki; Tetsuya Kawanishi; Masayuki Izutsu (IEICE Electron. Express, 2012)

Phase noise analysis of an optical frequency comb using single side-band suppressed carrier modulation in an amplified optical fiber loop. - Atsushi Kanno; Tetsuya Kawanishi (IEICE Electron. Express, 2012)

Monolithic mode-locked erbium-doped LiNbO3 waveguide laser with dielectric multilayer mirror. - Yutaro Katano; Satoshi Shinada; Shinya Nakajima; Tetsuya Kawanishi; Hirochika Nakajima (IEICE Electron. Express, 2012)

Adaptable access system: pursuit of ideal future access system architecture. - Toshiaki Kuri; Hiroaki Harai; Naoya Wada; Tetsuya Kawanishi; Mizuhiko Hosokawa (IEEE Netw., 2012)

Performance evaluation of LTE signal transmission over a seamlessly integrated radio-over-fiber and millimeter-wave wireless link. - Pham Tien Dat; Atsushi Kanno; Tetsuya Kawanishi (GLOBECOM Workshops, 2013)

Coherent MMW/terahertz signal transmission with frequency-reconfigurable RoF transmitter based on an optical frequency comb. - Atsushi Kanno; Toshiaki Kuri; Isao Morohashi; Iwao Hosako; Tetsuya Kawanishi; Yuki Yoshida; Ken-ichi Kitayama (GLOBECOM, 2013)

Precise lightwave modulation for digital and analogue optical communications. - Tetsuya Kawanishi (ICAIT, 2013)

Radio-over-fiber photonic wireless bridge in the W-Band. - Sebastian Babiel; Andreas Stohr; Atsushi Kanno; Tetsuya Kawanishi (ICC Workshops, 2013)

Energy and deployment efficiency of a millimeter-wave Radio-on-Radio-over-fiber system for railways. - Pham Tien Dat; Atsushi Kanno; Tetsuya Kawanishi (OFC/NFOEC, 2013)

Coherent optical and radio seamless transmission based on DSP-aided radio-over-fiber technology. - Atsushi Kanno; Toshiaki Kuri; Iwao Hosako; Tetsuya Kawanishi; Yuki Yoshida; Yoshihiro Yasumura; Ken-ichi Kitayama (OFC/NFOEC, 2013)

PS-QPSK with duobinary-shaping and MLSD reception for constructing power- and spectrum-efficient superchannel. - Guo-Wei Lu; Yukiyoshi Kamio; Tetsuya Kawanishi (OFC/NFOEC, 2013)

Optical 64QAM transmitter using tandem IQ modulators with balanced complexity in electronics and optics. - Guo-Wei Lu; Takahide Sakamoto; Tetsuya Kawanishi (OFC/NFOEC, 2013)

Investigation of receiver DSP carrier phase estimation rate for self-homodyne space-division multiplexing communication systems. - Jose Manuel Delgado Mendinueta; Benjamin J. Puttnam; Jun Sakaguchi; Ruben S. Luis; Werner Klaus; Yoshinari Awaji; Naoya Wada; Atsushi Kanno; Tetsuya Kawanishi (OFC/NFOEC, 2013)

105Tb/s transmission system using low-cost, MHz linewidth DFB lasers enabled by self-homodyne coherent detection and a 19-core fiber. - Benjamin J. Puttnam; Jose Manuel Delgado Mendinueta; Jun Sakaguchi; Ruben S. Luis; Werner Klaus; Yoshinari Awaji; Naoya Wada; Atsushi Kanno; Tetsuya Kawanishi (OFC/NFOEC, 2013)

Large-capacity transmission over a 19-core fiber. - Jun Sakaguchi; Benjamin J. Puttnam; Werner Klaus; Jose Manuel Delgado Mendinueta; Yoshinari Awaji; Naoya Wada; Atsushi Kanno; Tetsuya Kawanishi (OFC/NFOEC, 2013)

Filter-less multi-tone coherent orthogonal detection for multi-channel reception of super-channel/OFDM signals. - Takahide Sakamoto; Guo-Wei Lu; Tetsuya Kawanishi (OFC/NFOEC, 2013)

Precise chirp parameter measurement of asymmetric Mach-Zehnder modulators with active Y-branch. - Yuya Yamaguchi; Yuki Yamada; Atsushi Kanno; Tetsuya Kawanishi; Masayuki Izutsu; Hirochika Nakajima (IEICE Electron. Express, 2013)

Quadrature-Phase-Shift-Keying Radio-over-Fiber Transmission for Coherent Optical and Radio Seamless Networks. - Atsushi Kanno; Pham Tien Dat; Toshiaki Kuri; Iwao Hosako; Tetsuya Kawanishi; Yoshihiro Yasumura; Yuki Yoshida; Ken-ichi Kitayama (IEICE Trans. Electron., 2013)

Standardization Activities for Radio on Fiber Transmitter within IEC TC103/WG5. - Satoru Kurokawa; Junichiro Ichikawa; Tetsuya Kawanishi; Hiroyo Ogawa (IEICE Trans. Electron., 2013)

Generation of Millimeter Waves with Fine Frequency Tunability Using Mach-Zehnder-Modulator-Based Flat Comb Generator. - Isao Morohashi; Yoshihisa Irimajiri; Takahide Sakamoto; Tetsuya Kawanishi; Motoaki Yasui; Iwao Hosako (IEICE Trans. Electron., 2013)

10-GHz High-Repetition Optical Short Pulse Generation from Wavelength-Tunable Quantum Dot Optical Frequency Comb Laser. - Naokatsu Yamamoto; Kouichi Akahane; Tetsuya Kawanishi; Hideyuki Sotobayashi; Yuki Yoshioka; Hiroshi Takai (IEICE Trans. Electron., 2013)

Phase Noise Measurement of Optical Heterodyning Two-Tone Signal Generated by Two Free-Running Lasers. - Ryuta Yamanaka; Taka Fujita; Hideyuki Sotobayashi; Atsushi Kanno; Tetsuya Kawanishi (IEICE Trans. Electron., 2013)

Quantum dot two-mode laser at 1.55 μm-band for 90GHz radio over fiber applications. - Kouichi Akahane; Naokatsu Yamamoto; Atsushi Kanno; Toshimasa Umezawa; Tetsuya Kawanishi (ECOC, 2014)

Evaluation of frequency fluctuation in fiber-wireless link with direct IQ down-converter. - Atsushi Kanno; Pham Tien Dat; Toshiaki Kuri; Iwao Hosako; Tetsuya Kawanishi; Yuki Yoshida; Ken-ichi Kitayama (ECOC, 2014)

Pump-linewidth-tolerant optical data exchange between 16QAM and QPSK with 50-GHz channel-spacing using coherent DFB pump. - Guo-Wei Lu; Andre A. C. Albuquerque; Benjamin J. Puttnam; Takahide Sakamoto; Miguel V. Drummond; Rogério Nogueira; Atsushi Kanno; Satoshi Shinada; Naoya Wada; Tetsuya Kawanishi (ECOC, 2014)

Coherently-pumped FWM in HNLF for 16QAM wavelength conversion free of phase noise from pumps. - Guo-Wei Lu; Takahide Sakamoto; Tetsuya Kawanishi (ECOC, 2014)

Direct chirp measurement of electro absorption modulator using optical homodyne quadrature demodulation technique. - Ukrit Mankong; Tanawat Tangmala; Keizo Inagaki; Atsushi Kanno; Tetsuya Kawanishi (ECOC, 2014)

Extinction-ratio and chirp tunable LiNbO3 single-drive modulator for precise amplitude modulation. - Yuya Yamaguchi; Shinya Nakajima; Atsushi Kanno; Tetsuya Kawanishi; Masayuki Izutsu; Hirochika Nakajima (ECOC, 2014)

Digital signal processing techniques for multi-core fiber transmission using self-homodyne detection schemes. - Jose Manuel Delgado Mendinueta; Ruben S. Luis; Benjamin J. Puttnam; Jun Sakaguchi; Werner Klaus; Yoshinari Awaji; Naoya Wada; Atsushi Kanno; Tetsuya Kawanishi (EUSIPCO, 2014)

Radio-on-terahertz over fiber system for future mobile fronthauling. - Atsushi Kanno; Pham Tien Dat; Iwao Hosako; Tetsuya Kawanishi; Hiroyo Ogawa (GLOBECOM, 2014)

Electro-optic devices for imaging systems using radio-over-fibre. - Tetsuya Kawanishi; Naokatsu Yamamoto; Toshimasa Umezawa; Kouichi Akahane; Atsushi Kanno; Pham Tien Dat (ICTON, 2014)

Seamless W-band radio-to-optical signal conversion with direct IQ down-converter. - Atsushi Kanno; Pham Tien Dat; Toshiaki Kuri; Iwao Hosako; Tetsuya Kawanishi; Yuki Yoshida; Ken-ichi Kitayama (OFC, 2014)

Ultra high-speed fiber wireless transport. - Tetsuya Kawanishi (OFC, 2014)

Error-free and laser-phase-noise-insensitive optical coherent transmission of uplink radio-over-fiber signal. - Toshiaki Kuri; Takahide Sakamoto; Guo-Wei Lu; Tetsuya Kawanishi (OFC, 2014)

Time-interleaved carrier-suppressed return-to-zero QPSK for filter-less dual-carrier transmission. - Takahide Sakamoto; Guo-Wei Lu; Tetsuya Kawanishi (OFC, 2014)

Optical DFG-based 60 GHz signal generation by using a LiTaO3 rectangular waveguide. - Yusuke Takashima; Yuto Maejima; Hiroshi Murata; Yasuyuki Okamura; Atsushi Kanno; Tetsuya Kawanishi (IEICE Electron. Express, 2014)

High-spectral efficiency millimeter wave-over-fiber system for future mobile fronthaul. - Pham Tien Dat; Atsushi Kanno; Keizo Inagaki; Naokatsu Yamamoto; Tetsuya Kawanishi (ECOC, 2015)

Oppositely-biased dual-polarization IQ modulators for nonlinearity-tolerant polarization-multiplexed phase-conjugated twin-signals generation. - Takahide Sakamoto; Guo-Wei Lu; Tetsuya Kawanishi (ECOC, 2015)

Bias free operational 107-Gbaud ultra-fast photodetector. - Toshimasa Umezawa; Kouichi Akahane; Naokatsu Yamamoto; Atsushi Kanno; Tetsuya Kawanishi (ECOC, 2015)

High-Speed Optical and Millimeter-Wave Wireless Link for Disaster Recovery. - Ken-ichi Kitayama; Yuki Yoshida; Yuya Yamaguchi; Hirochika Nakajima; Kohsuke Nishimura; Abdelmoula Bekkali; Masayuki Oishi; Hidenori Iwai; Kazuya Ota; Norihiko Sato; Naoyasu Kamiya; Keiji Tanaka; et al. (GLOBECOM Workshops, 2015)

High-speed and low-latency front-haul system for heterogeneous wireless networks using seamless fiber-millimeter-wave. - Pham Tien Dat; Atsushi Kanno; Tetsuya Kawanishi (ICC, 2015)

10-Gb/s wireless signal transmission over a seamless IM/DD fiber-MMW system at 92.5 GHz. - Tu Thanh Lam; Vo Nguyen Quoc Bao; Pham Tien Dat; Atsushi Kanno; Tetsuya Kawanishi (ICC, 2015)

Advanced photonics for wired and wireless seamless networks. - Tetsuya Kawanishi; Atsushi Kanno; Pham Tien Dat; Atsushi Matsumoto; Naokatsu Yamamoto (ICTON, 2015)

5G transport and broadband access networks: The need for new technologies and standards. - Pham Tien Dat; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi (Kaleidoscope, 2015)

Bidirectional transmission of LTE-A carrier aggregation signal over a seamless fiber-wireless system in W-band. - Pham Tien Dat; Atsushi Kanno; Tetsuya Kawanishi (OFC, 2015)

Mode-division multiplexed W-Band RoF transmission for higher-order spatial multiplexing. - Nikolaos-Panteleimon Diamantopoulos; S. Inudo; Yuki Yoshida; Akihiro Maruta; Atsushi Kanno; Pham Tien Dat; Tetsuya Kawanishi; Ryo Maruyama; N. Kuwaki; Shinji Matsuo; Ken-ichi Kitayama (OFC, 2015)

On the MIMO channel rank deficiency in W-band MIMO RoF transmissions. - S. Inudo; Yuki Yoshida; Atsushi Kanno; Pham Tien Dat; Tetsuya Kawanishi; Ken-ichi Kitayama (OFC, 2015)

Laser-phase-fluctuation-insensitive optical coherent transmission of 16-QAM radio-over-fiber signal with offset-frequency-spaced two-tone local light. - Toshiaki Kuri; Takahide Sakamoto; Tetsuya Kawanishi (OFC, 2015)

Pump-phase-noise-tolerant wavelength multicasting for QAM signals using flexible coherent multi-carrier pump. - Guo-Wei Lu; Takahide Sakamoto; Tetsuya Kawanishi (OFC, 2015)

Experimental evaluation of the time and frequency crosstalk dependency in a 7-core multi-core fiber. - Ruben S. Luis; Benjamin J. Puttnam; Werner Klaus; Jose Manuel Delgado Mendinueta; Yoshinari Awaji; Naoya Wada; Atsushi Kanno; Tetsuya Kawanishi; Tetsuya Nakanishi; Tetsuya Hayashi; Takashi Sasaki (OFC, 2015)

Long distance transmission in a multi-core fiber with self-homodyne detection. - Benjamin J. Puttnam; Ruben S. Luis; Jose Manuel Delgado Mendinueta; Jun Sakaguchi; Werner Klaus; Yoshinari Awaji; Naoya Wada; Atsushi Kanno; Tetsuya Kawanishi (OFC, 2015)

Optical comb-based versatile wavelength division multicasting add-drop node for efficient WDM networks. - Jun Sakaguchi; Takahide Sakamoto; Atsushi Kanno; Yoshinari Awaji; Naoya Wada; Tetsuya Kawanishi (OFC, 2015)

Loop-assisted multi-input-multi-output coherent matched detector for ultra high-bandwidth parallel optical time-frequency domain sampling. - Takahide Sakamoto; Guo-Wei Lu; Tetsuya Kawanishi (OFC, 2015)

Zero-bias operational ultra-broadband UTC-PD above 110 GHz for high symbol rate PD-array in high-density photonic integration. - Toshimasa Umezawa; Kouichi Akahane; Naokatsu Yamamoto; Atsushi Kanno; Keizo Inagaki; Tetsuya Kawanishi (OFC, 2015)

Multifunctional all-optical signal processing scheme for simultaneous multichannel WDM multicast and XOR logic gates based on FWM in QD-SOA. - Danshi Wang; Min Zhang 016; Guo-Wei Lu; Jun Qin; Takahide Sakamoto; Kouichi Akahane; Naokatsu Yamamoto; Tetsuya Kawanishi; Ze Li 007; Yue Cui (OFC, 2015)

Monolithically integrated quantum-dot optical modulator with semiconductor optical amplifier for 1.3µm waveband error-free 10-km-long transmission. - Naokatsu Yamamoto; Kouichi Akahane; Toshimasa Umezawa; Tetsuya Kawanishi (OFC, 2015)

Millimetre-wave Electro-Optic Modulator with Quasi-Phase-Matching Array of Orthogonal-Gap-Embedded Patch-antennas on Low-k Dielectric Material. - Yusuf Nur Wijayanto; Atsushi Kanno; Hiroshi Murata; Sinya Nakajima; Tetsuya Kawanishi; Yasuyuki Okamura (PHOTOPTICS (2), 2015)

WDM RoF-MMW and linearly located distributed antenna system for future high-speed railway communications. - Pham Tien Dat; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi (IEEE Commun. Mag., 2015)

Sub-THz radio-over-fiber signal generation using external modulation. - Tetsuya Kawanishi; Takahide Sakamoto; Atsushi Kanno (IEICE Electron. Express, 2015)

Performance of Uplink Packetized LTE-A Signal Transmission on a Cascaded Radio-on-Radio and Radio-over-Fiber System. - Pham Tien Dat; Atsushi Kanno; Tetsuya Kawanishi (IEICE Trans. Electron., 2015)

Low Chirp Modulation by Electro-Optic Intensity Modulator Using Microwave 180-Degree Hybrid Directly Formed on LiNbO3 Substrate. - Akira Enokihara; Masashi Yamamoto; Tadashi Kawai; Tetsuya Kawanishi (IEICE Trans. Electron., 2015)

High-Speed Coherent Transmission Using Advanced Photonics in Terahertz Bands. - Atsushi Kanno; Pham Tien Dat; Norihiko Sekine; Iwao Hosako; Tetsuya Kawanishi; Yuki Yoshida; Ken-ichi Kitayama (IEICE Trans. Electron., 2015)

Re-Configurable Wavelength De-Multiplexer in Wavelength Division Multiplexed Radio-over-Fiber Systems for Frequency-Modulated Continuous-Wave Signal Delivery. - Toshiaki Kuri; Atsushi Kanno; Tetsuya Kawanishi (IEICE Trans. Electron., 2015)

Generation of Arbitrarily Patterned Pulse Trains in the THz Range by Spectral Synthesis of Optical Combs. - Isao Morohashi; Takahide Sakamoto; Norihiko Sekine; Tetsuya Kawanishi; Akifumi Kasamatsu; Iwao Hosako (IEICE Trans. Electron., 2015)

New Burst-Mode Erbium-Doped Fiber Amplifier with Wide Linearity and High Output Power for Uplink Analog Radio-over-Fiber Signal Transmission. - Masaki Shiraiwa; Yoshinari Awaji; Naoya Wada; Atsushi Kanno; Toshiaki Kuri; Pham Tien Dat; Tetsuya Kawanishi (IEICE Trans. Electron., 2015)

Millimeter-Wave Radar Receiver Using Z-Cut LiNbO3 Optical Modulator with Orthogonal-Gap-Embedded Patch-Antennas on Low-k Dielectric Material. - Yusuf Nur Wijayanto; Atsushi Kanno; Hiroshi Murata; Tetsuya Kawanishi; Yasuyuki Okamura (IEICE Trans. Electron., 2015)

A 1.55-µm Waveband Optical Absorption Characterization of an Electro-Absorption Device with a Highly Stacked InAs/InGaAlAs Quantum Dot Structure. - Naokatsu Yamamoto; Kouichi Akahane; Toshimasa Umezawa; Tetsuya Kawanishi (IEICE Trans. Electron., 2015)

Compact Electro-Optic Single Sideband Modulators Utilizing Miniaturized Branch-Line Couplers on LiNbO3 Substrate. - Katsuyuki Yamamoto; Tadashi Kawai; Akira Enokihara; Tetsuya Kawanishi (IEICE Trans. Electron., 2015)

Radio-on-radio-over-fiber: efficient fronthauling for small cells and moving cells. - Pham Tien Dat; Atsushi Kanno; Tetsuya Kawanishi (IEEE Wirel. Commun., 2015)

On the channel capacity of polarization-multiplexed coherent radio-over-fiber transmissions at millimeter-wave bands. - Yuki Yoshida; Y. Takami; S. Inudo; Ken-ichi Kitayama; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi (ICC, 2016)

Radio-over-fibre based high-speed millimetre-wave backhaul system for high-speed trains. - Tetsuya Kawanishi; Atsushi Kanno; Pham Tien Dat; Naokatsu Yamamoto (ICTON, 2016)

High-capacity and high-spectral-efficiency seamless fiber-wireless system for high-speed trains. - Pham Tien Dat; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi (OFC, 2016)

Mitigation of modal crosstalk-induced power fading in mode division multiplexed W-band RoF links. - Nikolaos P. Diamantopoulos; Y. Takami; Yuki Yoshida; Akihiro Maruta; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi; Ryu Maruyama; N. Kuwaki; Shinji Matsuo; Ken-ichi Kitayama (OFC, 2016)

All-spectrum fiber-wireless transmission for 5G backhaul and fronthaul links. - Atsushi Kanno; Pham Tien Dat; Naokatsu Yamamoto; Iwao Hosako; Yuki Yoshida; Ken-ichi Kitayama; Tetsuya Kawanishi (OFC, 2016)

31-GHz single-carrier, 44.6-Gbps photonic wireless transmission using a wide-bandwidth high power photodetector and a pre-distortion technique. - Toshimasa Umezawa; Kunihisa Jitsuno; Nobuhiko Shibagaki; Atsushi Kanno; Kouichi Akahane; A. Mstsumoto; Naokatsu Yamamoto; Tetsuya Kawanishi (OFC, 2016)

5G transport networks: the need for new technologies and standards. - Pham Tien Dat; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi (IEEE Commun. Mag., 2016)

Transmission of multiband wireless signals over a seamless IM/DD fiber-MMW system. - Nguyen Van Toan; Pham Tien Dat; Atsushi Kanno; Naokatsu Yamamoto; Vo Nguyen Quoc Bao; Tetsuya Kawanishi (IEICE Electron. Express, 2016)

Flexible high-order QAM transmitters for elastic optical networks. - Guo-Wei Lu; Takahide Sakamoto; Tetsuya Kawanishi (Photonic Netw. Commun., 2016)

Spatial Coherent Matched Detection Using High-Speed Two Dimensional Photo-Diode Array for Full-Channel Demultiplexing and Demodulation of Mode-Division-Multiplexed Signals. - Takahide Sakamoto; Toshimasa Umezawa; Guo-Wei Lu; Kouichi Akahane; Atsushi Matsumoto; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi (ECOC, 2017)

Dense SDM 32-Pixel 2-D Photodetector Array. - Toshimasa Umezawa; Tadashige Sakamoto; Atsushi Kanno; Ken Kusakata; Kouichi Akahane; Atsushi Matsumoto; Naokatsu Yamamoto; Tetsuya Kawanishi (ECOC, 2017)

Linearized LiNbO3 Modulator with Dual Mach-Zehnder Interferometer and Branched Asymmetric CPW Electrode. - Yuya Yamaguchi; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi; Hirochika Nakajima (ECOC, 2017)

Concept of sensor over fibres and its application to high resolution millimetre-wave radar. - Tetsuya Kawanishi; Atsushi Kanno; Naokatsu Yamamoto (ICTON, 2017)

Simultaneous transmission of multi-RATs and mobile fronthaul in the MMW bands over an IFoF system. - Pham Tien Dat; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi (OFC, 2017)

100 GHz optical-to-radio converter module and its application in radio and power over fiber transmission through multi-core fiber. - Toshimasa Umezawa; Pham Tien Dat; Eiichi Hase; Kenichi Kashima; Atsushi Kanno; Kouichi Akahane; Atsushi Matsumoto; Naokatsu Yamamoto; Tetsuya Kawanishi (OFC, 2017)

Cell-Less Network for Handover-Free Communications to High-Speed Trains Using a Switched WDM Fiber-Wireless Backhaul. - Pham Tien Dat; Atsushi Kanno; Keizo Inagaki; Naokatsu Yamamoto; Tetsuya Kawanishi (ECOC, 2018)

THz Communications Enabled by Photonics. - Tetsuya Kawanishi (ECOC, 2018)

400-Gbps Space Division Multiplexing Optical Wireless Communication Using Two-Dimensional Photodetector Array. - Toshimasa Umezawa; Takahide Sakamoto; Atsushi Kanno; Shinya Nakajima; Atsushi Matsumoto; Naokatsu Yamamoto; Tetsuya Kawanishi (ECOC, 2018)

Optical Modulator with the Digitized Transfer Function for Multilevel Amplitude Shift Keying. - Yuya Yamaguchi; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi (ECOC, 2018)

90-GHz Linear-Cell Systems for Public Transportation Systems. - Tetsuya Kawanishi; Atsushi Kanno; Naokatsu Yamamoto (ICTON, 2018)

High-Speed and Handover-Free Communications for High-Speed Trains Using Switched WDM Fiber-Wireless System. - Pham Tien Dat; Atsushi Kanno; Keizo Inagaki; Toshimasa Umezawa; François Rottenberg; Jérôme Louveaux; Naokatsu Yamamoto; Tetsuya Kawanishi (OFC, 2018)

Radio-over-Fiber-based Seamless Fiber-Wireless Convergence for Small Cell and Linear Cell Networks. - Pham Tien Dat; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi (OFC, 2018)

Full-Duplex and Scalable MIMO Fiber-Wireless Seamless System in W-Band for Future Mobile Networks. - Pham Tien Dat; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi (OFC, 2018)

High-speed Two-dimensional Photodetector Array for 4-WDM 25-Gbaud FSO Communication. - Toshimasa Umezawa; Takahide Sakamoto; Atsushi Kanno; Kouichi Akahane; Atsushi Matsumoto; Naokatsu Yamamoto; Tetsuya Kawanishi (OFC, 2018)

Integrated Fiber-Wireless System in W Band for Ultra-Dense Small-Cell and Moving-Cell Network. - Pham Tien Dat; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi (GLOBECOM Workshops, 2019)

Terahertz and Photonics Seamless Networks. - Tetsuya Kawanishi (GLOBECOM Workshops, 2019)

Reconfigurable Radio-over-Fibre Networks for Interference Mitigation in Linear Cell Radars. - Tetsuya Kawanishi; Tetsuya Miura; Keizo Inagaki (ICTON, 2019)

Hybrid Optical Wireless-mmWave: Ultra High-Speed Indoor Communications for Beyond 5G. - Pham Tien Dat; Atsushi Kanno; Keizo Inagaki; Toshimasa Umezawa; Naokatsu Yamamoto; Tetsuya Kawanishi (INFOCOM Workshops, 2019)

Full-Duplex Transmission of Nyquist-SCM Signal over a Seamless Bidirectional Fiber-Wireless System in W-Band. - Pham Tien Dat; Atsushi Kanno; Naokatsu Yamamoto; Nguyen Van Dien; Nguyen Tan Hung; Tetsuya Kawanishi (OFC, 2019)

Field Trial of 1.5-Gbps 97-GHz Train Communication System Based on Linear Cell Radio Over Fiber Network for 240-km/h High-Speed Train. - Atsushi Kanno; Pham Tien Dat; Toshimasa Umezawa; Naokatsu Yamamoto; Tetsuya Kawanishi; Nagateru Iwasawa; Nariya Iwaki; Kazuki Nakamura; Kunihiro Kawasaki; Naoki Kanada; Naruto Yonemoto; Yosuke Sato; et al. (OFC, 2019)

1-λ, 16-Parallel Lanes, 50-Gbaud On-Off Keying Multi-Core Fiber Communication Directly Coupled to High Speed 2D-Photodetector Array. - Toshimasa Umezawa; Atsushi Matsumoto; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi (OFC, 2019)

Evaluation of Bend-Insensitive Plastic and Glass Fiber for 28-GHz RF Transmission. - Takamitsu Aiba; Hiroki Yasuda; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi; Tomohiro Wakabayashi (OECC/PSC, 2019)

Low Loss ultra-compact Mach-Zehnder Modulator on Lithium Niobate Photonic Wire. - Jiraphat Chunlen; Tuptim Angkaew; Tetsuya Kawanishi (OECC/PSC, 2019)

High-Speed Characterization of Parallel Mach-Zehnder Optical Modulators. - Hugo S. C. Freire; Yuya Yamaguchi; Tetsuya Kawanishi (OECC/PSC, 2019)

Dual-Parallel Mach-Zehnder Modulator Integrated with 180-degree Hybrid for Compensation of Third-Order Intermodulation Distortion. - Daichi Furubayashi; Yuta Kashiwagi; Tadashi Kawai; Akira Enokihara; Naokatsu Yamamoto; Tetsuya Kawanishi (OECC/PSC, 2019)

Radio Over Fiber System for Uninterrupted High-Speed Railway Communications. - Atsushi Kanno; Tetsuya Kawanishi (OECC/PSC, 2019)

Characterization of 2D high-speed photodetector array device for SDM fiber communication applications. - Ken Kusakata; S. Takamizawa; Toshimasa Umezawa; Naokatsu Yamamoto; Tetsuya Kawanishi (OECC/PSC, 2019)

Simultaneous Compensation of Fiber Nonlinearity and Dispersive Fading Effects by Conjugated-Paired Radio-on-Fiber Transmission with Phase-Shifted Dual-Sideband Downconversion. - Takahide Sakamoto; Guo-Wei Lu; Naokatsu Yamamoto; Tetsuya Kawanishi (OECC/PSC, 2019)

Experimental Evaluation of Wavelength-Dependence of Thin-Film LiNbO3 Modulator with an Extinction-Ratio-Tunable Structure. - Yuya Yamaguchi; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi (OECC/PSC, 2019)

Design of Optical Receiver for 28 GHz RF Transmission over Multi-mode Fiber. - Hiroki Yasuda; Takamitsu Aiba; Satoshi Tanaka; Toshinori Suzuki; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi; Tomohiro Wakabayashi (OECC/PSC, 2019)

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 (ECOC, 2020)

End-to-End Demonstration based on hybrid IFoF and Analogue RoF/RoMMF links for 5G Access/In-Building Network System. - Hsuan-Yun Kao; Hiroki Yasuda; Shota Ishimura; Kazuki Tanaka; Takamitsu Aiba; Tomohiro Wakabayashi; Kosuke Nishimura; Tetsuya Kawanishi; Ryo Inohara (ECOC, 2020)

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 (ECOC, 2020)

Simple Pedestrian Detection Secondary Radar Using Frequency Doubling. - Tetsuya Kawanishi; Satomi Masuda; Erika Shigematsu; Kunihisa Jitsuno; Keizo Inagaki; Atsushi Kanno (ICTON, 2020)

High-Speed Radio-on-Free-Space Optical Mobile Fronthaul System for Ultra-Dense Radio Access Network. - Pham Tien Dat; Atsushi Kanno; Keizo Inagaki; François Rottenberg; Jérôme Louveaux; Naokatsu Yamamoto; Tetsuya Kawanishi (OFC, 2020)

High Speed 2D-PDA FSO Receiver for High Optical Alignment Robustness with Space Diversity. - Toshimasa Umezawa; Yuki Yoshida; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi (OFC, 2020)

On the Sample Complexity of Phase-Retrieval Receiver Based on 2-D Arrayed Photodetectors. - Yuki Yoshida; Toshimasa Umezawa; Atsushi Kanno; Keizo Inagaki; Naokatsu Yamamoto; Tetsuya Kawanishi (OFC, 2020)

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; et al. (IEICE Electron. Express, 2020)

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 Electron. Express, 2020)

Electro-Optic Modulator for Compensation of Third-Order Intermodulation Distortion Using Frequency Chirp Modulation. - Daichi Furubayashi; Yuta Kashiwagi; Takanori Sato; Tadashi Kawai; Akira Enokihara; Naokatsu Yamamoto; Tetsuya Kawanishi (IEICE Trans. Electron., 2020)

1024-QAM Analog Waveform Transmission Over a Seamless Fiber-Wireless System in W Band. - Pham Tien Dat; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi (INFOCOM Workshops, 2021)

Transparent Fiber-Radio-Fiber Bridge at 101 GHz using Optical Modulator and Direct Photonic Down-Conversion. - Pham Tien Dat; Yuya Yamaguchi; Keizo Inagaki; Masayuki Motoya; Satoshi Oikawa; Junichiro Ichikawa; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi (OFC, 2021)

240-Gbps SDM-FSO communication using 4-bundle fiber and 2D photodetector array. - Toshimasa Umezawa; Kunio Jitsuno; Naokatsu Yamamoto; Tetsuya Kawanishi (OFC, 2021)

2-bit Delta-sigma Modulated 32-QAM OFDM based Dual-wavelength Digital RoF Link. - Zu-Kai Weng; Atsushi Kanno; Tetsuya Kawanishi (OFC, 2021)

Demonstration of 28-GHz Band Radio Signal Transmission into Vehicle by Analog Radio over Multi-Mode Fiber. - Hiroki Yasuda; Toshinori Suzuki; Hsuan-Yun Kao; Satoshi Tanaka; Shota Ishimura; Kazuki Tanaka; Naokatsu Yamamoto; Atsushi Kanno; Ryo Inohara; Kosuke Nishimura; Takamitsu Aiba; Tomohiro Wakabayashi; et al. (OFC, 2021)

Millimeter-Wave and Terahertz Fixed Wireless Link Budget Evaluation for Extreme Weather Conditions. - Zu-Kai Weng; Atsushi Kanno; Pham Tien Dat; Keizo Inagaki; Kosuke Tanabe; Eisaku Sasaki; Thomas Kürner; Bo Kum Jung; Tetsuya Kawanishi (IEEE Access, 2021)

Guest Editorial Special Issue on "THz Communications and Networking". - Ian F. Akyildiz; Tetsuya Kawanishi; Wolfgang H. Gerstacker; Xiaodai Dong; Aydin Babakhani (IEEE J. Sel. Areas Commun., 2021)

Design Considerations of Photonic THz Communications for 6G Networks. - Minkyu Sung; Sang-Rok Moon; Eon-Sang Kim; Sungmin Cho; Joon Ki Lee; Seung-Hyun Cho; Tetsuya Kawanishi; Ho-Jin Song (IEEE Wirel. Commun., 2021)

High-Efficient Pixel Layout Arrangement in High-Speed 2-D Photodetector Array. - Siyang Duan; Toshimasa Umezawa; Atsushi Kanno; Tetsuya Kawanishi (OECC/PSC, 2022)

High-Speed Beam Steering LN Optical Phased Array Module using Comb-Electrode. - Hayato Takemura; Haruto Shinya; Yuya Yamaguchi; Toshimasa Umezawa; Atsushi Kanno; Tetsuya Kawanishi (OECC/PSC, 2022)

Coverage Extension of 28 GHz Band Uplink Signals Inside Vehicle Using Analog Radio over Multi-Mode Fiber. - Hiroki Yasuda; Toshinori Suzuki; Satoshi Tanaka; Takamitsu Aiba; Tomohiro Wakabayashi; Tetsuya Kawanishi (OECC/PSC, 2022)

50 GHz High Photocurrent PIN-PD and Its Thermal Effect. - Yaofeng Yi; Toshimasa Umezawa; Atsushi Kanno; Tetsuya Kawanishi (OECC/PSC, 2022)

Modeling and evaluation of millimeter wave scattering from minimally rough surfaces on stones. - Riku Yoshino; Tomohiko Kanaya; Shintaro Takada; Kunihisa Jitsuno; Keizo Inagaki; Tetsuya Kawanishi (IEICE Electron. Express, 2022)

Transparent Relay and Switching of THz-wave Signals in 285-GHz Band Using Photonic Technology. - Pham Tien Dat; Yuya Yamaguchi; Keizo Inagaki; Shingo Takano; Shotaro Hirata; Junichiro Ichikawa; Ryo Shimizu; Isao Morohashi; Yuki Yoshida; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi; et al. (OFC, 2023)

Transparent Radio-Fiber-Radio-Fiber System in 100-GHz Band for Indoor Uplink Signal Transmission in Beyond 5G. - Pham Tien Dat; Yuya Yamaguchi; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi; Kouichi Akahane (OFC, 2023)

Delay Compensated Quad-level Delta-sigma Modulation Dual-color DRoF System for Beyond 5G Mobile Fronthaul. - Zu-Kai Weng; Pham Tien Dat; Atsushi Kanno; Tetsuya Kawanishi; Kouichi Akahane (OFC, 2023)

Experimental Demonstration of Approximate Communication Based on Radio-Over- Fiber Systems. - Toshiki Ishimaru; Takatomo Mihana; Michihiro Koibuchi; Tetsuya Kawanishi; Makoto Naruse (IEEE Access, 2023)

FPGA-driven random walk noise generation for tunable laser linewidth control. - Yu Zhou; Zu-Kai Weng; Keizo Inagaki; Tetsuya Kawanishi (IEICE Electron. Express, 2023)

Millimeter Wave Attenuation Due to Wind and Heavy Rain in a Tropical Region. - Ukrit Mankong; Pakawat Chamsuk; Sitthichok Nakprasert; Sangdaun Potha; Zu-Kai Weng; Pham Tien Dat; Atsushi Kanno; Tetsuya Kawanishi (Sensors, 2023)

Foreword. - Tetsuya Kawanishi (IEICE Trans. Electron., 2023)

Design of dependable THz transmitters under severe weather conditions. - Tetsuya Kawanishi (ICTON, 2024)

Demonstration of Robust Mobile Free Space Optical System using High-speed Beam Tracking and 2D-PDA-based Spatial-Diversity Reception. - Zu-Kai Weng; Yuki Yoshida; Toshimasa Umezawa; Abdelmoula Bekkali; Michikazu Hattori; Atsushi Matsumoto; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi; Kouichi Akahane (OFC, 2024)

40-Gbit/s Mobile FSO with High-speed Beam Stabilizer and 2D-PDA-based Diversity Receiver for Support Robots. - Zu-Kai Weng; Yuki Yoshida; Toshimasa Umezawa; Abdelmoula Bekkali; Michikazu Hattori; Atsushi Matsumoto; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi; Kouichi Akahane (OFC, 2024)

Thin-Film Lithium Niobate Modulator for a Flat Frequency-Response over 110 GHz Bandwidth with Integrated Electro-Optic Frequency-Domain Equalizer. - Yuya Yamaguchi; Pham Tien Dat; Naokatsu Yamamoto; Kouichi Akahane; Atsushi Kanno; Tetsuya Kawanishi (OFC, 2024)

High-Responsivity Unitraveling Carrier-Type Photodetector Using Avalanche InAlAs as a Collector at a High-Frequency Range. - Yaofeng Yi; Toshimasa Umezawa; Kouichi Akahane; Tetsuya Kawanishi (IEEE Access, 2024)

Thermal Study for High-Photocurrent Photodetector in Non-Saturation Region Using Thin Substrate, Thin Absorber, and Flip- Chip Bonding Process. - Yaofeng Yi; Toshimasa Umezawa; Kouichi Akahane; Tetsuya Kawanishi (IEEE Access, 2024)

Sub-Terahertz Signal Demultiplexing and Downconversion Using Photonic Technology. - Pham Tien Dat; Yuya Yamaguchi; Yuki Yoshida; Atsushi Kanno; Naokatsu Yamamoto; Tetsuya Kawanishi; Kouichi Akahane (OFC, 2025)

Fully Packaged 100-GHz-Bandwidth EO-Equalizer-Integrated TFLN Modulator with Record-High Slope Efficiency Enabling 200-GBaud Signaling. - Yuya Yamaguchi; Paikun Zhu; Pham Tien Dat; Shingo Takano; Shotaro Hirata; Yu Kataoka; Junichiro Ichikawa; Ryo Shimizu; Kouichi Akahane; Naokatsu Yamamoto; Atsushi Kanno; Tetsuya Kawanishi (OFC, 2025)

High-Precision Characterization and Bias Control of Parallel Mach-Zehnder Modulators Using Optical Spectrum Analysis. - Qingchuan Huang; Hugo S. C. Freire; Tetsuya Kawanishi (IEEE Access, 2025)