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Dive into the research topics where Kazuhiro Yamaji is active.

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Featured researches published by Kazuhiro Yamaji.


optical fiber communication conference | 2013

Compact and low power DP-QPSK modulator module with InP-based modulator and driver ICs

Naoya Kono; Takamitsu Kitamura; Hideki Yagi; Naoki Itabashi; Taizo Tatsumi; Yasuyuki Yamauchi; Kosuke Fujii; Kazuhiko Horino; Shingo Yamanaka; Keiji Tanaka; Kazuhiro Yamaji; Chie Fukuda; Hajime Shoji

A compact 128 Gbit/s DP-QPSK modulator module including driver ICs and polarization multiplexing micro-optics is demonstrated. A dissipation power of only 3.2 W was achieved with a low differential driver output voltage of 2.5 Vpp.


optical fiber communication conference | 2014

A Compact Low-Power 224-Gb/s DP-16QAM Modulator Module with InP-based Modulator and Linear Driver ICs

Taizo Tatsumi; Naoki Itabashi; Tomoko Ikagawa; Naoya Kono; Morihiro Seki; Keiji Tanaka; Kazuhiro Yamaji; Yasushi Fujimura; Katsumi Uesaka; Takashi Nakabayashi; Hajime Shoji; Shoichi Ogita


Archive | 2014

FULL-DUPLEX OPTICAL TRANSCEIVER APPLICABLE TO DIGITAL COHERENT SYSTEM

Takatoshi Kato; Kazuhiro Yamaji; Hiromi Kurashima


Archive | 2014

OPTICAL MODULATOR MODULE AND SEMICONDUCTOR OPTICAL MODULATOR

Chie Fukuda; Naoya Kono; Morihiro Seki; Kazuhiro Yamaji; Yasuyuki Yamauchi; Keiji Tanaka; Taizo Tatsumi; Naoki Itabashi


Archive | 2014

OPTICAL MODULE OUTPUTTING POLARIZATION COMBINED OPTICAL BEAM

Munetaka Kurokawa; Tomoya Saeki; Yasushi Fujimura; Kazuhiro Yamaji; Yasuyuki Yamauchi


Archive | 2013

100 Gbit/s Compact Digital Coherent Receiver Using InP-based Mixer

Yoshihiro Tateiwa; Masaru Takechi; Hideki Yagi; Yoshihiro Yoneda; Kazuhiro Yamaji; Yasushi Fujimura


Archive | 2017

METHOD OF ASSEMBLING THE OPTICAL MODULE IMPLEMENTING MACH-ZEHNDER MODULATOR

Tomoya Saeki; Yasushi Fujimura; Kazuhiro Yamaji; Toru Watanabe; Munetaka Kurokawa


Archive | 2017

Optical module implementing with optical source, optical modulator, and wavelength detector, and a method to assemble the same

Kazuhiro Yamaji; Yasushi Fujimura; Toru Watanabe; Yasuyuki Yamauchi; Tomoya Saeki; Munetaka Kurokawa


Archive | 2016

Lens system for improving optical coupling between collimating beam and optical waveguide

Kazuhiro Yamaji; Tomoya Saeki; Manabu Shiozaki; Yasushi Fujimura; Munetaka Kurokawa


Archive | 2014

OPTICAL MODULE INCLUDING SEMICONDUCTOR OPTICAL MODULATOR

Kazuhiro Yamaji; Yasuyuki Yamauchi

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Yasushi Fujimura

Sumitomo Electric Industries

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Yasuyuki Yamauchi

Sumitomo Electric Industries

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Keiji Tanaka

Sumitomo Electric Industries

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Munetaka Kurokawa

Sumitomo Electric Industries

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Naoki Itabashi

Sumitomo Electric Industries

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Taizo Tatsumi

Sumitomo Electric Industries

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Tomoya Saeki

Sumitomo Electric Industries

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Chie Fukuda

Sumitomo Electric Industries

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Morihiro Seki

Sumitomo Electric Industries

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