Mitsuru EKAWA

Highly Reliable and Compact InP-Based In-Phase and Quadrature Modulators for Over 400 Gbit/s Coherent Transmission Systems
Hajime TANAKA Tsutomu ISHIKAWA Takashi KITAMURA Masataka WATANABE Ryuji YAMABI Ryo YAMAGUCHI Naoya KONO Takehiko KIKUCHI Morihiro SEKI Tomokazu KATSUYAMA Mitsuru EKAWA Hajime SHOJI 
Publication:   
Publication Date: 2020/11/01
Vol. E103-C  No. 11  pp. 661-668
Type of Manuscript:  Special Section PAPER (Special Section on Opto-electronics and Communications for Future Optical Network)
Category: 
Keyword: 
coherent transmission, optical modulators, InP, step stress test, 
 Summary | Full Text:PDF(1.3MB)
InP-Based Photodetectors Monolithically Integrated with 90° Hybrid toward Over 400Gb/s Coherent Transmission Systems
Hideki YAGI Takuya OKIMOTO Naoko INOUE Koji EBIHARA Kenji SAKURAI Munetaka KUROKAWA Satoru OKAMOTO Kazuhiko HORINO Tatsuya TAKEUCHI Kouichiro YAMAZAKI Yoshifumi NISHIMOTO Yasuo YAMASAKI Mitsuru EKAWA Masaru TAKECHI Yoshihiro YONEDA 
Publication:   
Publication Date: 2019/04/01
Vol. E102-C  No. 4  pp. 347-356
Type of Manuscript:  INVITED PAPER (Special Section on Progress in Optical Device Technology for Increasing Data Transmission Capacity)
Category: 
Keyword: 
digital coherent transmission, InP, 90° hybrid, multimode interference structure, p-i-n photodiode, 
 Summary | Full Text:PDF(2MB)
InP-Based Monolithic Integration Technologies for 100/200Gb/s Pluggable Coherent Transceivers
Hideki YAGI Yoshihiro YONEDA Mitsuru EKAWA Hajime SHOJI 
Publication:   
Publication Date: 2017/02/01
Vol. E100-C  No. 2  pp. 179-186
Type of Manuscript:  INVITED PAPER (Special Section on Fabrication Technologies Supporting the Photonic/Nanostructure Devices)
Category: 
Keyword: 
coherent transmission, InP, DP-IQ modulator, 90° hybrid, p-i-n photodiode, 
 Summary | Full Text:PDF(2.2MB)
Low Noise Figure (6.3 dB) Polarization Insensitive Spot-Size Converter Integrated Semiconductor Optical Amplifier
Ken MORITO Mitsuru EKAWA Takayuki WATANABE Yuji KOTAKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/04/01
Vol. E85-C  No. 4  pp. 990-994
Type of Manuscript:  Special Section PAPER (Special Issue on Recent Progress of Integrated Photonic Devices)
Category: Active Devices
Keyword: 
semiconductor optical amplifier (SOA), spot-size converters, polarization insensitive, noise figure, 
 Summary | Full Text:PDF(265.2KB)