Keiro KOMATSU


Spot-Size-Converter Integrated Laser Diode with Waveguide Width Abruptly Expanded Structure
Hiroyuki YAMAZAKI Yuji FURUSHIMA Yasutaka SAKATA Yuichiro OKUNUKI Yoshihiro SASAKI Keiro KOMATSU 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2000/06/25
Vol. E83-C  No. 6  pp. 838-844
Type of Manuscript:  Special Section PAPER (Special Issue on Advanced Optical Devices for Next Generation High-Speed Communication Systems and Photonic Networks)
Category: Semiconductor Lasers
Keyword: 
laser diodeMOVPEspot size converteraccess networkcoupling loss
 Summary | Full Text:PDF(847.1KB)

Hybrid Integrated 44 Optical Matrix Switch Module on Silica Based Planar Waveguide Platform
Tomoaki KATO Jun-ichi SASAKI Tsuyoshi SHIMODA Hiroshi HATAKEYAMA Takemasa TAMANUKI Shotaro KITAMURA Masayuki YAMAGUCHI Tatsuya SASAKI Keiro KOMATSU Mitsuhiro KITAMURA Masataka ITOH 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1999/02/25
Vol. E82-B  No. 2  pp. 357-364
Type of Manuscript:  INVITED PAPER (Joint Special Issue on Photonics in Switching: Systems and Devices)
Category: Photonic Switching Devices
Keyword: 
hybrid photonic integrationsemiconductor optical amplifierplanar lightwave circuitoptical gate switchflip-chip bondingspot-size conversionoptical switchingphotonic ATM switchoptical fiber communicationoptical network
 Summary | Full Text:PDF(1.2MB)

Hybrid Integrated 44 Optical Matrix Switch Module on Silica Based Planar Waveguide Platform
Tomoaki KATO Jun-ichi SASAKI Tsuyoshi SHIMODA Hiroshi HATAKEYAMA Takemasa TAMANUKI Shotaro KITAMURA Masayuki YAMAGUCHI Tatsuya SASAKI Keiro KOMATSU Mitsuhiro KITAMURA Masataka ITOH 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/02/25
Vol. E82-C  No. 2  pp. 305-312
Type of Manuscript:  INVITED PAPER (Joint Special Issue on Photonics in Switching: Systems and Devices)
Category: Photonic Switching Devices
Keyword: 
hybrid photonic integrationsemiconductor optical amplifierplanar lightwave circuitoptical gate switchflip-chip bondingspot-size conversionoptical switchingphotonic ATM switchoptical fiber communicationoptical network
 Summary | Full Text:PDF(1.2MB)

In-Plane Bandgap Energy Controlled Selective MOVPE and Its Applications to Photonic Integrated Circuits
Tatsuya SASAKI Masayuki YAMAGUCHI Keiro KOMATSU Ikuo MITO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1997/05/25
Vol. E80-C  No. 5  pp. 654-663
Type of Manuscript:  INVITED PAPER (Special Issue on Photonic Integrated Circuits)
Category: Semiconductor Devices, Circuits and Processing
Keyword: 
photonic integrated circuitselective MOVPEmultiple quantum welloptical waveguide
 Summary | Full Text:PDF(1019.4KB)

A Transceiver PIC for Bidirectional Optical Communication Fabricated by Bandgap Energy Controlled Selective MOVPE
Takeshi TAKEUCHI Tatsuya SASAKI Kiichi HAMAMOTO Masako HAYASHI Kikuo MAKITA Kenkou TAGUCHI Keiro KOMATSU 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1997/01/25
Vol. E80-C  No. 1  pp. 54-61
Type of Manuscript:  Special Section PAPER (Special Issue on Devices, Packaging Technology, and Subsystems for the Optical Access Network)
Category: 
Keyword: 
photonic integrated circuitsselective MOVPEoptical waveguidebidirectional communication
 Summary | Full Text:PDF(698.3KB)

Gb/s-Range Semiconductor and Ti:LiNbO3 Guided-Wave Optical Modulators.
Keiro KOMATSU Rangaraj MADABHUSHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1996/01/25
Vol. E79-C  No. 1  pp. 3-13
Type of Manuscript:  INVITED PAPER (Special Issue on Optomicrowave Techniques and Their Applications)
Category: Optomicrowave Devices
Keyword: 
optical modulatorswaveguidesemiconductorLinbO3optical communication systems
 Summary | Full Text:PDF(1MB)