Hiroki Kawahara

Publication Activity (10 Years)

Years Active: 2017-2024
Publications (10 Years): 18

Top Topics

Video Communication

Atmospheric Turbulence

Amplitude Modulation

Optical Networks

Top Venues

IEICE Trans. Commun.

Publications

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)
Masahiro Nakagawa, Hiroki Kawahara, Takeshi Seki, Takashi Miyamura
Highly Efficient Multi-Band Optical Networks with Wavelength-Selective Band Switching. IEICE Trans. Commun. 106 (5) (2023)
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) (2023)
Hiroki Kawahara, Kaito Yamao, Kentaro Oda
Magic Drops: Food 3D Printing of Colored Liquid Balls by Ultrasound Levitation. UIST (Adjunct Volume) (2022)
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. (4) (2021)
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)
Hiroki Kawahara, Kyo Inoue, Koji Igarashi
Analysis of Signal Distribution in ASE-Limited Optical On-Off Keying Direct-Detection Systems. IEICE Trans. Commun. (11) (2021)
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)
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)
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. (11) (2020)
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)
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)
Hiroki Kawahara, Ryo Yamamoto, Satoshi Ohzahata, Toshihiko Kato
Throughput Enhancement with Overlay Network Virtualization Using Commodity Devices. UCC Companion (2019)
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)
Masahiro Nakagawa, Hiroki Kawahara, Kana Masumoto, Hidetoshi Onda, Kazuyuki Matsumura
Numerical Analysis of Adaptive Restoration in Optical Transport Networks. OECC/PSC (2019)
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)
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)
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)