Koji ENBUTSU


Channel Arrangement Design in Lumped Amplified WDM Transmission over NZ-DSF Link with Nonlinearity Mitigation Using Optical Phase Conjugation
Shimpei SHIMIZU Takayuki KOBAYASHI Takeshi UMEKI Takushi KAZAMA Koji ENBUTSU Ryoichi KASAHARA Yutaka MIYAMOTO 
Publication:   
Publication Date: 2022/07/01
Vol. E105-B  No. 7  pp. 805-813
Type of Manuscript:  PAPER
Category: Fiber-Optic Transmission for Communications
Keyword: 
optical signal processing techniques for optical communicationsoptical phase conjugationnonlinear opticsperiodically poled LiNbO3 waveguide
 Summary | Full Text:PDF(2.2MB)

Nonlinearity Mitigation of PDM-16QAM Signals Using Multiple CSI-OPCs in Ultra-Long-Haul Transmission without Excess Penalty
Takeshi UMEKI Takayuki KOBAYASHI Akihide SANO Takuya IKUTA Masashi ABE Takushi KAZAMA Koji ENBUTSU Ryoichi KASAHARA Yutaka MIYAMOTO 
Publication:   
Publication Date: 2020/11/01
Vol. E103-B  No. 11  pp. 1226-1232
Type of Manuscript:  Special Section PAPER (Joint Special Section on Opto-electronics and Communications for Future Optical Network)
Category: 
Keyword: 
optical signal processing techniques for optical communicationsoptical phase conjugationnonlinear opticsperiodically poled LiNbO3 waveguide
 Summary | Full Text:PDF(3.1MB)

PPLN-Based Low-Noise Phase Sensitive Amplification Using an Optical Phase-Locked Pump
Takushi KAZAMA Takeshi UMEKI Yasuhiro OKAMURA Koji ENBUTSU Osamu TADANAGA Atsushi TAKADA Ryoichi KASAHARA 
Publication:   
Publication Date: 2020/11/01
Vol. E103-B  No. 11  pp. 1265-1271
Type of Manuscript:  Special Section PAPER (Joint Special Section on Opto-electronics and Communications for Future Optical Network)
Category: 
Keyword: 
phase sensitive amplifierperiodically poled LiNbO3 waveguidenoise figure
 Summary | Full Text:PDF(2.5MB)

PPLN-Based Low-Noise In-Line Phase Sensitive Amplifier with Highly Sensitive Carrier-Recovery System
Koji ENBUTSU Takeshi UMEKI Osamu TADANAGA Masaki ASOBE Hirokazu TAKENOUCHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2016/08/01
Vol. E99-B  No. 8  pp. 1727-1733
Type of Manuscript:  Special Section PAPER (Special Section on Advanced Information and Communication Technologies and Services in Conjunction with Main Topics of APCC2015)
Category: Fiber-Optic Transmission for Communications
Keyword: 
phase sensitive amplifierperiodically poled LiNbO3 waveguide
 Summary | Full Text:PDF(1.5MB)

Development of 60 Gb/s-Class Parallel Optical Interconnection Module (ParaBIT-1)
Akira OHKI Mitsuo USUI Nobuo SATO Nobuyuki TANAKA Kosuke KATSURA Toshiaki KAGAWA Makoto HIKITA Koji ENBUTSU Shunichi TOHNO Yasuhiro ANDO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2001/03/01
Vol. E84-C  No. 3  pp. 295-303
Type of Manuscript:  Special Section PAPER (Special Issue on Optical Interconnects/Optical Signal Processing)
Category: Optical Interconnection Systems
Keyword: 
optical interconnectVCSELpolymeric waveguidesilicon bipolar ICParaBIT
 Summary | Full Text:PDF(4MB)

A New Optical Interface Structure for Parallel Optical Interconnect Module
Mitsuo USUI Nobuo SATO Akira OHKI Koji ENBUTSU Makoto HIKITA Michiyuki AMANO Kohsuke KATSURA Yasuhiro ANDO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2000/09/25
Vol. E83-C  No. 9  pp. 1447-1457
Type of Manuscript:  Special Section PAPER (Special Issue on Current Electromechanical Devices and Their Materials with Recent Innovations)
Category: 
Keyword: 
parallel optical interconnectionoptical connectorpolymeric optical waveguideoptical moduleplastic molded parts
 Summary | Full Text:PDF(4.5MB)