Zobrazeno 1 - 10
of 100
pro vyhledávání: '"Yoshifumi Muramoto"'
Autor:
Yasuhiko Nakanishi, Satoshi Tsunashima, Wataru Kobayashi, Yuta Ueda, Hiroshi Yamazaki, Shigeru Kanazawa, Yoshifumi Muramoto, Hiroaki Sanjoh, Hiroyuki Ishii
Publikováno v:
Journal of Lightwave Technology. 35:775-780
We fabricated a flip-chip interconnection lumped-electrode EADFB laser module and an optical receiver that includes a broadband electrical amplifier. Both have a 3-dB bandwidth of more than 50 GHz. Under 53.2-Gbaud 4-PAM (107 Gb/s) operation, clear e
Autor:
Hiroshi Yamazaki, Yasuhiko Nakanishi, Yuta Ueda, Wataru Kobayashi, Yoshifumi Muramoto, Hiroaki Sanjoh, Shigeru Kanazawa, Hiroyuki Ishii
Publikováno v:
Journal of Lightwave Technology. 35:418-422
We fabricated a Hi-FIT LE-EADFB laser module. Hi-FIT, which is a wire-free interconnection technique, provides a higher modulation bandwidth and a flatter frequency response than a conventional wire interconnection technique. The fabricated module ha
Autor:
Masahiro Nada, Hideaki Matsuzaki, Tetsuichiro Ohno, Toshihide Yoshimatsu, Nakajima Fumito, Yoshifumi Muramoto
Publikováno v:
OFC
106-Gbit/s PAM4 transmission over 40-km single-mode fiber is demonstrated using an avalanche photodiode (APD) with a gap-grading layer for high-speed operation. The APD shows maximum bandwidth of 42GHz with 0.5-A/W responsivity at unity gain.
Autor:
Takashi Goh, Eiji Yoshida, Yasuhiko Nakanishi, Yu Kurata, Haruki Yokoyama, Mikitaka Itoh, Yasuaki Hashizume, Hiromasa Tanobe, Hiroyuki Fukuyama, Toshikazu Hashimoto, Shinichi Aozasa, Yoshifumi Muramoto, Hiroshi Yamazaki
Publikováno v:
Journal of Lightwave Technology. 33:1202-1209
Digital coherent transmission systems with multilevel and multicarrier modulation formats have been moving beyond 100-G systems. In this paper, we report a one-chip 400-G coherent receiver founded on a silica-based planar lightwave circuit (PLC) inte
Publikováno v:
Journal of Lightwave Technology. 33:984-990
This paper reviews our work on high-speed avalanche photodiodes (APDs) with a unique vertical-illumination structure, targeting 100-Gb/s systems and beyond. The APDs feature easy lateral and vertical scaling for achieving the required operation speed
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 20:79-88
Device design for unitraveling-carrier photodiodes (UTC-PDs) and their derivative structures is reconsidered from the point of view of terahertz (THz) applications. A key design procedure for maximizing their bandwidth is optimization by incorporatin
Publikováno v:
Journal of Lightwave Technology. 32:2841-2848
The extension of an optical transmission system with a combination of quadrature phase-shift keying and a digital coherent technique has led to the need for economical and compact receivers. In this paper, we demonstrate the heterogeneous integration
Publikováno v:
Journal of Lightwave Technology. 32:1543-1548
A 25-Gbit/s avalanche photodiode (APD) using an inverted p-down structure and triple-mesa structure for eliminating an edge breakdown and reducing an electric field at a surface of the device is proposed and examined. Active area dependence of dark c
Autor:
Hiroshi Yamazaki, Yasuhiko Nakanishi, Yoshifumi Muramoto, Hiroaki Sanjoh, Wataru Kobayashi, Shigeru Kanazawa, Hiromasa Tanobe, Satoshi Tsunashima, Yuta Ueda, Hiroyuki Ishii
Publikováno v:
2016 IEEE CPMT Symposium Japan (ICSJ).
We have developed a flip-chip interconnection technique to solve the problem of the degradation of the modulation bandwidth of an optical transmitter due to the parasitic inductance of bonding wire. And we have fabricated an LE-EA-DFB laser module th
Transmission of 214-Gbit/s 4-PAM signal using an ultra-broadband lumped-electrode EADFB laser module
Autor:
Hiroshi Yamazaki, Kiyoto Takahata, Yoshifumi Muramoto, Hiroaki Sanjoh, Yuta Ueda, Takeshi Fujisawa, Wataru Kobayashi, Hiroyuki Ishii, Shigeru Kanazawa, Yasuhiko Nakanishi
Publikováno v:
OFC
Using a lumped-electrode EADFB laser with a modulation bandwidth of ∼59 GHz, we demonstrated single-wavelength single-polarization direct-detection 4-PAM transmission with the record net data rate of 200 Gbit/s.