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2020 – today
- 2024
[j10]Yaofeng Yi
, Toshimasa Umezawa, Kouichi Akahane, Tetsuya Kawanishi:
High-Responsivity Unitraveling Carrier-Type Photodetector Using Avalanche InAlAs as a Collector at a High-Frequency Range. IEEE Access 12: 22813-22820 (2024)- [j9]Yaofeng Yi, Toshimasa Umezawa, Kouichi Akahane, Tetsuya Kawanishi:
Thermal Study for High-Photocurrent Photodetector in Non-Saturation Region Using Thin Substrate, Thin Absorber, and Flip- Chip Bonding Process. IEEE Access 12: 56414-56421 (2024) - [j8]Shotaro Yasumori, Seiya Morikawa, Takanori Sato, Tadashi Kawai, Akira Enokihara, Shinya Nakajima, Kouichi Akahane:
Optical Mode Multiplexer Using LiNbO3 Asymmetric Directional Coupler Enabling Voltage Control for Phase-Matching Condition. IEICE Trans. Electron. 107(5): 146-149 (2024) - [j7]Paikun Zhu, Yuki Yoshida, Kouichi Akahane, Ken-ichi Kitayama:
High-speed reach-extended IM-DD system with low-complexity DSP for 6G fronthaul [Invited]. J. Opt. Commun. Netw. 16(1): 24 (2024) - [c31]Toshiaki Kuri, Pham Tien Dat, Kouichi Akahane:
Radio-Over-X (RoX) Technologies for Future Local Access Network. ICC Workshops 2024: 703-708 - [c30]Pham Tien Dat, Yuya Yamaguchi, Keizo Inagaki, Kouichi Akahane:
5G NR Signal Transparent Transmission Over a Converged Fiber-THz-Fiber-mmWave System. INFOCOM (Workshops) 2024: 1-2 - [c29]Pham Tien Dat, Yuya Yamaguchi, Kouichi Akahane:
Enabling Fiber-Wireless Technologies For Radio Communications In Millimeter-Wave and Terahertz-Wave Bands In IMT-2030 and Beyond. ITU K 2024: 1-8 - [c28]Chih-Hsien Cheng, Po-Lun Chen, Pin-Wei Ho, Yu-Heng Hong, Shih-Chen Chen, Shu-Wei Chang, Chao-Hsin Wu, Hao-Chung Kuo, Atsushi Matsumoto, Kouichi Akahane, Gong-Ru Lin:
Low-Divergent 940-nm Photonic-Crystal Surface-Emitting Laser for Short-Reach Free-Space Data Link. OFC 2024: 1-3 - [c27]Pham Tien Dat, Yuya Yamaguchi, Shingo Takano, Shotaro Hirata, Junichiro Ichikawa, Ryo Shimizu, Keizo Inagaki, Isao Morohashi, Yuki Yoshida, Atsushi Kanno, Naokatsu Yamamoto, Kouichi Akahane:
151.5-GHz Sub-THz Signal Reception and Downconversion Using All-Optical Technology. OFC 2024: 1-3 - [c26]Gong-Ru Lin, Chih-Hsien Cheng, Po-Lun Chen, Pin-Wei Ho, Szu-En Lai, Yi-Chien Wu, Yu-Sheng Liao, Yu-Chieh Chi, Atsushi Matsumoto, Kouichi Akahane:
All-in-one TO-can-Packed RGB-LD Lamp Enables 40-Gbit/s White-lighting Wireless DMT Link. OFC 2024: 1-3 - [c25]Toshimasa Umezawa, Pham Tien Dat, Yuki Yoshida, Shinya Nakajima, Atsushi Matsumoto, Kouichi Akahane, Atsushi Kanno, Naokatsu Yamamoto:
DC-226 GHz well-impedance-matched high-speed photoreceiver for multi-band signal detection. OFC 2024: 1-3 - [c24]Zu-Kai Weng, Yuki Yoshida, Toshimasa Umezawa, Abdelmoula Bekkali, Michikazu Hattori, Atsushi Matsumoto, Atsushi Kanno, Naokatsu Yamamoto, Tetsuya Kawanishi, Kouichi Akahane:
Demonstration of Robust Mobile Free Space Optical System using High-speed Beam Tracking and 2D-PDA-based Spatial-Diversity Reception. OFC 2024: 1-3 - [c23]Zu-Kai Weng, Yuki Yoshida, Toshimasa Umezawa, Abdelmoula Bekkali, Michikazu Hattori, Atsushi Matsumoto, Atsushi Kanno, Naokatsu Yamamoto, Tetsuya Kawanishi, Kouichi Akahane:
40-Gbit/s Mobile FSO with High-speed Beam Stabilizer and 2D-PDA-based Diversity Receiver for Support Robots. OFC 2024: 1-3 - [c22]Yuya Yamaguchi, Pham Tien Dat, Naokatsu Yamamoto, Kouichi Akahane, Atsushi Kanno, Tetsuya Kawanishi:
Thin-Film Lithium Niobate Modulator for a Flat Frequency-Response over 110 GHz Bandwidth with Integrated Electro-Optic Frequency-Domain Equalizer. OFC 2024: 1-3 - [c21]Paikun Zhu, Yuki Yoshida, Kouichi Akahane, Ken-ichi Kitayama:
Reach Extension of Net-200G/λ IM-DD PAM4 Links to Beyond-100km with Low-complexity Using OE-EQ. OFC 2024: 1-3 - 2023
- [c20]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, Kouichi Akahane:
Transparent Relay and Switching of THz-wave Signals in 285-GHz Band Using Photonic Technology. OFC 2023: 1-3 - [c19]Pham Tien Dat, Yuya Yamaguchi, Atsushi Kanno, Naokatsu Yamamoto, Tetsuya Kawanishi, Kouichi Akahane:
Transparent Radio-Fiber-Radio-Fiber System in 100-GHz Band for Indoor Uplink Signal Transmission in Beyond 5G. OFC 2023: 1-3 - [c18]Toshimasa Umezawa, Atsushi Matsumoto, Kouichi Akahane, Atsushi Kanno, Naokatsu Yamamoto:
100-Gbps 2-SDM 2-WDM FSO beam direct detection using resonant cavity 4x4 photodetector array. OFC 2023: 1-3 - [c17]Zu-Kai Weng, Pham Tien Dat, Atsushi Kanno, Tetsuya Kawanishi, Kouichi Akahane:
Delay Compensated Quad-level Delta-sigma Modulation Dual-color DRoF System for Beyond 5G Mobile Fronthaul. OFC 2023: 1-3 - [c16]Paikun Zhu, Yuki Yoshida, Atsushi Kanno, Kouichi Akahane, Ken-ichi Kitayama:
Dispersion Compensation over C-band WDM Grid for 100Gb/s PAM4 System by Low-complexity Optoelectronic Feedforward Equalization (OE-FFE). OFC 2023: 1-3 - [c15]Paikun Zhu, Yuki Yoshida, Atsushi Kanno, Kouichi Akahane, Ken-ichi Kitayama:
DSP-enhanced Radio-over-fiber Xhaul Networks Toward Beyond-5G. OFC 2023: 1-3 - 2022
- [j6]Kotaro Aikawa, Michihiko Suhara, Takumi Kimura, Junki Wakayama, Takeshi Makino, Katsuhiro Usui, Kiyoto Asakawa, Kouichi Akahane, Issei Watanabe:
Admittance Spectroscopy Up to 67 GHz in InGaAs/InAlAs Triple-Barrier Resonant Tunneling Diodes. IEICE Trans. Electron. 105-C(10): 622-626 (2022) - [c14]Toshimasa Umezawa, Atsushi Matsumoto, Kouichi Akahane, Atsushi Kanno, Naokatsu Yamamoto:
400-pixel high-speed photodetector for high optical alignment robustness FSO receiver. OFC 2022: 1-3 - [c13]Makoto Naruse, Atsushi Uchida, Kazuharu Uchiyama, Kouichi Akahane:
Photonic Approach to Reinforcement Learning. OECC/PSC 2022: 1-2 - [c12]Pham Tien Dat, Keizo Inagaki, Atsushi Kanno, Kouichi Akahane:
60-Gb/s D-Band Wireless Signal Generation and Transmission Using Photonic Technology. RIVF 2022: 1-5
2010 – 2019
- 2018
- [c11]Toshimasa Umezawa, Takahide Sakamoto, Atsushi Kanno, Kouichi Akahane, Atsushi Matsumoto, Naokatsu Yamamoto, Tetsuya Kawanishi:
High-speed Two-dimensional Photodetector Array for 4-WDM 25-Gbaud FSO Communication. OFC 2018: 1-3 - 2017
- [c10]Takahide Sakamoto, Toshimasa Umezawa, Guo-Wei Lu, Kouichi Akahane, Atsushi Matsumoto, Atsushi Kanno, Naokatsu Yamamoto, Tetsuya Kawanishi:
Spatial Coherent Matched Detection Using High-Speed Two Dimensional Photo-Diode Array for Full-Channel Demultiplexing and Demodulation of Mode-Division-Multiplexed Signals. ECOC 2017: 1-3 - [c9]Toshimasa Umezawa, Tadashige Sakamoto, Atsushi Kanno, Ken Kusakata, Kouichi Akahane, Atsushi Matsumoto, Naokatsu Yamamoto, Tetsuya Kawanishi:
Dense SDM 32-Pixel 2-D Photodetector Array. ECOC 2017: 1-3 - [c8]Toshimasa Umezawa, Pham Tien Dat, Eiichi Hase, Kenichi Kashima, Atsushi Kanno, Kouichi Akahane, Atsushi Matsumoto, Naokatsu Yamamoto, Tetsuya Kawanishi:
100 GHz optical-to-radio converter module and its application in radio and power over fiber transmission through multi-core fiber. OFC 2017: 1-3 - 2016
- [c7]Toshimasa Umezawa, Kunihisa Jitsuno, Nobuhiko Shibagaki, Atsushi Kanno, Kouichi Akahane, A. Mstsumoto, Naokatsu Yamamoto, Tetsuya Kawanishi:
31-GHz single-carrier, 44.6-Gbps photonic wireless transmission using a wide-bandwidth high power photodetector and a pre-distortion technique. OFC 2016: 1-3 - 2015
- [j5]Naokatsu Yamamoto, Kouichi Akahane, Toshimasa Umezawa, Tetsuya Kawanishi:
A 1.55-µm Waveband Optical Absorption Characterization of an Electro-Absorption Device with a Highly Stacked InAs/InGaAlAs Quantum Dot Structure. IEICE Trans. Electron. 98-C(8): 878-881 (2015) - [c6]Toshimasa Umezawa, Kouichi Akahane, Naokatsu Yamamoto, Atsushi Kanno, Tetsuya Kawanishi:
Bias free operational 107-Gbaud ultra-fast photodetector. ECOC 2015: 1-3 - [c5]Toshimasa Umezawa, Kouichi Akahane, Naokatsu Yamamoto, Atsushi Kanno, Keizo Inagaki, Tetsuya Kawanishi:
Zero-bias operational ultra-broadband UTC-PD above 110 GHz for high symbol rate PD-array in high-density photonic integration. OFC 2015: 1-3 - [c4]Danshi Wang, Min Zhang, Guo-Wei Lu, Jun Qin, Takahide Sakamoto, Kouichi Akahane, Naokatsu Yamamoto, Tetsuya Kawanishi, Ze Li, Yue Cui:
Multifunctional all-optical signal processing scheme for simultaneous multichannel WDM multicast and XOR logic gates based on FWM in QD-SOA. OFC 2015: 1-3 - [c3]Naokatsu Yamamoto, Kouichi Akahane, Toshimasa Umezawa, Tetsuya Kawanishi:
Monolithically integrated quantum-dot optical modulator with semiconductor optical amplifier for 1.3µm waveband error-free 10-km-long transmission. OFC 2015: 1-3 - 2014
- [c2]Kouichi Akahane, Naokatsu Yamamoto, Atsushi Kanno, Toshimasa Umezawa, Tetsuya Kawanishi:
Quantum dot two-mode laser at 1.55 μm-band for 90GHz radio over fiber applications. ECOC 2014: 1-3 - [c1]Tetsuya Kawanishi, Naokatsu Yamamoto, Toshimasa Umezawa, Kouichi Akahane, Atsushi Kanno, Pham Tien Dat:
Electro-optic devices for imaging systems using radio-over-fibre. ICTON 2014: 1-4 - 2013
- [j4]Naokatsu Yamamoto, Kouichi Akahane, Tetsuya Kawanishi, Hideyuki Sotobayashi, Yuki Yoshioka, Hiroshi Takai:
10-GHz High-Repetition Optical Short Pulse Generation from Wavelength-Tunable Quantum Dot Optical Frequency Comb Laser. IEICE Trans. Electron. 96-C(2): 187-191 (2013) - 2012
- [j3]Makoto Naruse, Ferdinand Peper, Kouichi Akahane, Naokatsu Yamamoto, Tadashi Kawazoe, Naoya Tate, Motoichi Ohtsu:
Skew Dependence of Nanophotonic Devices Based on Optical Near-Field Interactions. ACM J. Emerg. Technol. Comput. Syst. 8(1): 4:1-4:12 (2012)
2000 – 2009
- 2009
- [j2]Naoki Ohtani, S. Noma, Kouichi Akahane, M. Hosoda, K. Fujita:
Experimental study on the condition of the formation of electric field domains in multiple finite-superlattices. Microelectron. J. 40(4-5): 818-820 (2009) - 2007
- [j1]Tak-Keung Liang, Kouichi Akahane, Naokatsu Yamamoto, Luis Romeu Nunes, Tetsuya Kawanishi, Masahiro Tsuchiya:
Novel Functionality and Material for Si-Photonics: Two-Photon Absorption Switching and Antimonide Hetero-Genius Epitaxy. IEICE Trans. Electron. 90-C(2): 409-414 (2007)
Coauthor Index
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