Satoshi Shirai
Mitsubishi Electric
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Publication
Featured researches published by Satoshi Shirai.
european conference on optical communication | 2010
Masaki Noda; Satoshi Yoshima; Kenji Ishii; Satoshi Shirai; Masamichi Nogami; Junichi Nakagawa
10G-EPON dual-rate transceiver with receiver sensitivity of −30.8dBm for 10.3125Gb/s and −35.5dBm for 1.25Gb/s due to fully optimized burst-mode AGC/ATC functions was developed. A high launch power and low dispersion penalty transmission were also achieved.
optical fiber communication conference | 2012
Masaki Noda; Naoki Suzuki; Satoshi Yoshima; Takeshi Suehiro; Susumu Ihara; Satoshi Shirai; Masamichi Nogami; Hiroshi Aruga; Seiji Kozaki; Junichi Nakagawa
This first super-splits 10G-EPON demonstration achieved the largest loss budget of 35.9 dB and a fast dual-rate synctime of 240 ns supporting 256 ONU splits with 8.0 Gb/s upstream throughput, highlighting novel self-switching AGC based XFP, 82.5 GS/s CDR and ONU SFP+.
Active and Passive Optical Components for WDM Communications IV | 2004
Toshitaka Aoyagi; Satoshi Shirai; Kazuhisa Takagi; Tohru Takiguchi; Yutaka Mihashi; Chikara Watatani; Takashi Nishimura
We have proved that short cavity length and large coupling coefficient structure can increase the relaxation oscillation frequency of directly modulated 1.3mm DFB-LDs for 10Gb/s operation. The grating with large coupling coefficient can be made of high refractive index InGaAsP material (=narrow band gap energy material), which has to be fabricated in the n-type InP cladding layer to prevent large hole and electron accumulation in the grating layer. By using this grating, 1.3mm AlGaInAs quarter lambda phase shifted DFB-LDs successfully revealed excellent eye diagrams with over 10% margin for OC-192 mask at the temperature range of 25-95 deg.C. Furthermore, we newly propose multi-phase shifted gating to 10Gb/s quarter lambda phase-shifted DFB-LDs to suppress the deterioration of eye diagrams due to non-uniform longitudinal distribution of light intensity and carrier density.
wireless and optical communications conference | 2012
Satoshi Yoshima; Masaki Noda; Eitetsu Igawa; Satoshi Shirai; Kenji Ishii; Masamichi Nogami; Junichi Nakagawa
In this paper, we report on the performances both of ONU and OLT transceivers for 10G-EPON systems including dynamic power saving technology and 10G/1G dual-rate receiving technology. The dynamic power saving technology for ONU can realize fast response less than 736 ns and high power consumption degradation more than 38 % in the heavy uplink traffic conditions. On the other hand, OLT receiver can achieve high receiver sensitivity for each 10G and 1G less than -30.6 dBm and -34.6 dBm, respectively, with fast receiver settling times of 800 ns for 10G and 400 ns for 1G.
opto electronics and communications conference | 2017
Daisuke Mita; Satoshi Shirai; Satoshi Yoshima; Tetsurou Ashida; Masaki Noda
We developed an SFP+ size N2a-compliant optical transceiver for XG-PON systems with a high minimum receiver sensitivity of −32.5 dBm and a rapid receiver settling time of 20 ns by using a burst-mode preamplifier with a peak-detecting AGC circuit incorporating a self-locking function. A high optical output power of +5.7 dBm and a low dispersion transmission penalty of 0.4 dB were also achieved.
OECC 2010 Technical Digest | 2010
Nobuo Ohata; Hiroshi Aruga; Satoshi Shirai; Toru Takiguchi; Yoshifumi Sasahata; Toshitaka Aoyagi; Atsushi Sugitatsu
Archive | 2012
Tadashi Murao; Keita Mochizuki; Satoshi Shirai; Nobuyuki Yasui
opto-electronics and communications conference | 2011
Toshitsugu Uesugi; Tsuneo Hamaguchi; Satoshi Nanjou; Koji Shibuya; Keitaro Yamagishi; Go Sakaino; Toru Takiguchi; Satoshi Shirai; Keita Mochizuki; Hiroshi Aruga; Atsushi Sugitatsu
european conference on optical communication | 2007
Satoshi Shirai; Naohiro Nomura; Masamichi Nogami; Tamon Omura; Junichi Nakagawa
Procedia - Social and Behavioral Sciences | 2004
Satoshi Shirai; Yasuaki Tatsuoka; Chikara Watatani; T. Ota; Kentaro Takagi; Toshio Aoyagi; Etsuji Omura; Nilce Emy Tomita