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Journal Articles
- 2023
[j5]Masahiro Nakagawa, Hiroki Kawahara, Takeshi Seki, Takashi Miyamura:
Highly Efficient Multi-Band Optical Networks with Wavelength-Selective Band Switching. IEICE Trans. Commun. 106(5): 416-426 (2023)- [j4]Hiroki Kawahara, Koji Igarashi, Kyo Inoue:
Level Allocation of Four-Level Pulse-Amplitude Modulation Signal in Optically Pre-Amplified Receiver Systems. IEICE Trans. Commun. 106(8): 652-659 (2023) - 2021
- [j3]Hiroki Kawahara, Kohei Saito, Masahiro Nakagawa, Takashi Kubo, Takeshi Seki, Takeshi Kawasaki, Hideki Maeda:
Real-Time Experiment and Numerical Analysis of Highly-Survivable Adaptive Restoration for High-Capacity Optical Signal Transmission. IEICE Trans. Commun. 104-B(4): 360-369 (2021) - [j2]Hiroki Kawahara, Kyo Inoue, Koji Igarashi:
Analysis of Signal Distribution in ASE-Limited Optical On-Off Keying Direct-Detection Systems. IEICE Trans. Commun. 104-B(11): 1386-1394 (2021) - 2020
- [j1]Fukutaro Hamaoka, Takeo Sasai, Kohei Saito, Takayuki Kobayashi
, Asuka Matsushita, Masanori Nakamura, Hiroki Taniguchi, Shoichiro Kuwahara, Hiroki Kawahara, Takeshi Seki, Josuke Ozaki, Yoshihiro Ogiso, Hideki Maeda, Yoshiaki Kisaka, Masahito Tomizawa:
Dual-Carrier 1-Tb/s Transmission Over Field-Deployed G.654.E Fiber Link Using Real-Time Transponder. IEICE Trans. Commun. 103-B(11): 1183-1189 (2020)
Conference and Workshop Papers
- 2024
- [c13]Tetsuo Kawakami, Hiroki Kawahara, Toshihiko Okamura, Ken-Ichiro Yoshino, Wakako Maeda:
No-guard-band integration of digital coherent CV-QKD system into 400 Gbit/s 75 GHz grid DWDM systems. OFC 2024: 1-3 - 2022
- [c12]Hiroki Kawahara, Kaito Yamao, Kentaro Oda:
Magic Drops: Food 3D Printing of Colored Liquid Balls by Ultrasound Levitation. UIST (Adjunct Volume) 2022: 99:1-99:2 - 2021
- [c11]Masahiro Nakagawa, Hiroki Kawahara, Takeshi Seki, Takashi Miyamura:
Adaptive Link-by-Link Band Allocation: A Novel Adaptation Scheme in Multi-Band Optical Networks. ONDM 2021: 1-6 - 2020
- [c10]Hiroki Kawahara, Masahiro Nakagawa, Takeshi Seki, Takashi Miyamura:
Experimental Demonstration of Wavelength-Selective Band/Direction-Switchable Multi-Band OXC Using an Inter-Band All-Optical Wavelength Converter. ECOC 2020: 1-4 - [c9]Hiroki Kawahara, Kohei Saito, Takeshi Seki, Takeshi Kawasaki, Hideki Maeda:
The Impact of Nonlinear Phase Noise Induced from Low-Speed Optical Supervisory Channel on Soft-Decision FEC Performance. OFC 2020: 1-3 - [c8]Hideki Maeda, Hiroki Kawahara, Kohei Saito, Takeshi Seki, Takeo Sasai, Fukutaro Hamaoka:
Real-Time Demonstration of 500-Gbps/Lambda and 600-Gbps/Lambda WDM Transmission on Field-Installed Fibers. OFC 2020: 1-3 - [c7]Kohei Saito, Takeo Sasai, Fukutaro Hamaoka, Hiroki Kawahara, Takeshi Seki, Hideki Maeda:
High spectral efficiency real-time 500-Gb/s/carrier transmission over field-installed G.654.E fiber link using forward and backward distributed Raman amplification. OFC 2020: 1-3 - 2019
- [c6]Fukutaro Hamaoka, Takeo Sasai, Kohei Saito, Takayuki Kobayashi, Asuka Matsushita, Masanori Nakamura, Hiroki Taniguchi, Shoichiro Kuwahara, Hiroki Kawahara, Takeshi Seki, Josuke Ozaki, Yoshihiro Ogiso, Hideki Maeda, Yoshiaki Kisaka, Masahito Tomizawa:
Dual-Carrier 1-Tb/s Transmission Over Field-Deployed Large-Core Pure-Silica-Core Fiber Link Using Real-Time Transponder. OECC/PSC 2019: 1-3 - [c5]Hiroki Kawahara, Kohei Saito, Masahiro Nakagawa, Takashi Kubo, Takeshi Seki, Takeshi Kawasaki, Hideki Maeda, Tomohiro Sekino, Naoki Bannai, Masaki Shinkai, Tomoki Sakamaki, Kenjiro Yamanaka, Takashi Kurimoto:
Real-time demonstration of 600Gbps/carrier WDM transmission and highly-survivable adaptive restoration on field installed fiber. OECC/PSC 2019: 1-3 - [c4]Masahiro Nakagawa, Hiroki Kawahara, Kana Masumoto, Hidetoshi Onda, Kazuyuki Matsumura:
Numerical Analysis of Adaptive Restoration in Optical Transport Networks. OECC/PSC 2019: 1-3 - [c3]Hiroki Kawahara, Ryo Yamamoto, Satoshi Ohzahata, Toshihiko Kato:
Throughput Enhancement with Overlay Network Virtualization Using Commodity Devices. UCC Companion 2019: 147-148 - 2018
- [c2]Keita Yamaguchi, Kazunori Seno, Kenya Suzuki, Hiroki Kawahara, Mitsunori Fukutoku, Toshikazu Hashimoto, Yutaka Miyamoto:
Integrated Wavelength Selective Switch Array for Space Division Multiplexed Network with Ultra-Low Inter-Spatial Channel Crosstalk. OFC 2018: 1-3 - 2017
- [c1]Mitsumasa Nakajima, Kenya Suzuki, Keita Yamaguchi, Hirotaka Ono, Hiroki Kawahara, Mitsunori Fukutoku, Takayuki Mizuno, Yutaka Miyamoto, Toshikazu Hashimoto:
SDM-compatible dynamic gain equalizer using spatial and planar optical circuit. OFC 2017: 1-3
Coauthor Index
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