Fujisawa Takeshi

J-GLOBAL         Last updated: Oct 30, 2018 at 15:00
 
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Name
Fujisawa Takeshi
Affiliation
Hokkaido University
Research funding number
70557660

Research Areas

 
 

Published Papers

 
GeSn/SiGeSn multiple-quantum-well electroabsorption modulator with taper coupler for mid-infrared Ge-on-Si platform
M. Akie, T. Fujisawa, T. Sato, M. Arai, and K. Saitoh
IEEE Journal of Selected Topics in Quantum Electronics   24(6) 3400208-3400208   Nov 2018   [Refereed]
Development of the wavefront matching method based on the 3-D finite-element method and its application to Si-wire mode converters
Y. Sawada, T. Sato, T. Fujisawa, and K. Saitoh
IEEE/OSA Journal of Lightwave Technology   36(17) 3652-3659   Sep 2018   [Refereed]
Beam propagation analysis of optical activity and circular dichroism in helically twisted photonic crystal fiber
S. Nakano, T. Fujisawa, T. Sato, and K. Saitoh
Japanese Journal of Applied Physics   57 08PF06-08PF06   Aug 2018   [Refereed]
A review on PLC-based two-mode multi/demultiplexer designed by wavefront matching method
E. Taguchi, T. Fujisawa, Y. Yamashita, S. Makino, N. Hanzawa, T. Sakamoto, T. Matsui, K. Tsujikawa, K. Nakajima, F. Yamamoto, and K. Saitoh
IEICE Transactions on Electronics   E101-C(7) 518-526   Jul 2018   [Refereed][Invited]
S. Ohta, T. Fujisawa, S. Makino, T. Sakamoto, T. Matsui, K. Tsujikawa, K. Nakajima, and K. Saitoh
Optics Express   26(12) 15211-15220   Jun 2018   [Refereed]

Conference Activities & Talks

 
Suppression of Group-Delay Spread in Coupled Two-LP-Mode Four-Core Fiber
T. Sato, K. Yoshida, T. Fujisawa, T. Sakamoto, T. Matsui, K. Tsujikawa, K. Nakajima, and K. Saitoh
IEEE Photonics Conference (IPC 2018)   Oct 2018   
Microscopic Gain Analysis of Modulation-Doped GeSn Quantum Well: Epitaxial Design toward High-Temperature Lasing
T. Fujisawa, M. Arai, and K. Saitoh
International Conference on Group IV Photonics (GFP)   Aug 2018   
PLC-based Mode Controlling Devices for Mode-Division-Multiplexing [Invited]
T. Fujisawa, T. Sakamoto, T. Matsui, K. Tsujikawa, K. Nakajima, and K. Saitoh
OptoElectronics and Communications Conference (OECC)   Jul 2018   
A Broadband Silicon Two-Mode Multiplexer Designed by Wavefront Matching Method
Y. Sawada, T. Sato, T. Fujisawa, and K. Saitoh
OptoElectronics and Communications Conference (OECC)   Jul 2018   
Proposal of Si Four-Wavelength Multiplexer using Higher-Order Mode for 100GbE
J. Takano, T. Sato, Y. Sawada, T. Fujisawa, T. Sakamoto, T. Matsui, K. Tsujikawa, K. Nakajima, and K. Saitoh
OptoElectronics and Communications Conference (OECC)   Jul 2018   

Patents

 
4944813 : 半導体光増幅器
満原学、佐藤具就、柴田泰夫、深野秀樹、藤澤剛、硴塚孝明、近藤康洋
5052936 : 量子バンド構造の計算方法及び量子バンド構造の計算プログラム
藤澤剛、山中孝之、八坂洋
5134033 : 半導体光集積素子
布谷伸浩、石井啓之、金澤慈、川口悦弘、藤澤剛、大木明、伊賀龍三、大橋弘美
5185030 : 半導体構造及びその半導体構造を用いた光半導体素子
荒井昌和、近藤康洋、藤澤剛、小林亘、中島紀伊知
5191973 : 光半導体装置及びその作製方法
藤澤剛、狩野文良