Katsuyuki UTAKA


Study on Tapered Multimode Interference-Based Coherent Lightwave Combiners
Zhigang WU Katsuyuki UTAKA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/05/01
Vol. E88-C  No. 5  pp. 1005-1012
Type of Manuscript:  Special Section PAPER (Joint Special Section on Recent Progress in Optoelectronics and Communications)
Category: Optical Passive Devices and Modules
Keyword: 
taperMMIend-facet reflectionmulti-port combiner
 Summary | Full Text:PDF(699.6KB)

Low Threshold /4-Shifted InGaAsP/InP DFB Lasers
Masashi USAMI Shigeyuki AKIBA Katsuyuki UTAKA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1986/04/25
Vol. E69-E  No. 4  pp. 385-388
Type of Manuscript:  Special Section LETTER (Special Issue: Papers from 1986 National Convention IECE Japan)
Category: Lasers and Related Devices
Keyword: 
 Summary | Full Text:PDF(309.7KB)

TE/TM Ratio in InGaAsP/InP /4-Shifted DFB Lasers with Non-Reflective Ends
Shigeyuki AKIBA Masashi USAMI Katsuyuki UTAKA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1986/04/25
Vol. E69-E  No. 4  pp. 389-391
Type of Manuscript:  Special Section LETTER (Special Issue: Papers from 1986 National Convention IECE Japan)
Category: Lasers and Related Devices
Keyword: 
 Summary | Full Text:PDF(241.5KB)

Measurement of Coupling Coefficient and Coupling Length of GaAs/AlGaAs Integrated Twin-Guide Injection Lasers Prepared by Liquid-Phase-Epitaxy
Katsuyuki UTAKA Yasuharu SUEMATSU Katsumi KISHINO Hideo KAWANISHI 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1979/05/25
Vol. E62-E  No. 5  pp. 319-323
Type of Manuscript:  PAPER
Category: Optical and Quantum Electronics
Keyword: 
 Summary | Full Text:PDF(375.6KB)