Tatsuo HATTA


Wavelength Conversion Characteristics of SOA-MZI Based All-Optical NRZ-OOK/RZ-BPSK Modulation Format Converter
Suresh M. NISSANKA Ken MISHINA Akihiro MARUTA Shunsuke MITANI Kazuyuki ISHIDA Katsuhiro SHIMIZU Tatsuo HATTA Ken-ichi KITAYAMA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/07/01
Vol. E91-B  No. 7  pp. 2160-2164
Type of Manuscript:  Special Section PAPER (Joint Special Section on Opto-electronics and Communications toward NGN and beyond)
Category: 
Keyword: 
semiconductor optical amplifiermodulation format converterwavelength converterMach-Zehnder interferometerBinary Phase Shift Keying (BPSK)
 Summary | Full Text:PDF(732.5KB)

Polymeric Waveguide Optical Switch Using Rotary Drive Mechanism
Toshitsugu UESUGI Shiho ZAIZEN Atsushi SUGITATSU Tatsuo HATTA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/07/01
Vol. E91-C  No. 7  pp. 1117-1120
Type of Manuscript:  Special Section PAPER (Joint Special Section on Opto-electronics and Communications toward NGN and beyond)
Category: 
Keyword: 
optical switchpolymeric waveguiderotary drivestructural analysis
 Summary | Full Text:PDF(441.4KB)

Design and Fabrication of 40 Gbps-NRZ SOA-MZI All-Optical Wavelength Converters with Submicron-Width Bulk InGaAsP Active Waveguides
Yasunori MIYAZAKI Kazuhisa TAKAGI Keisuke MATSUMOTO Toshiharu MIYAHARA Tatsuo HATTA Satoshi NISHIKAWA Toshitaka AOYAGI Kuniaki MOTOSHIMA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/05/01
Vol. E90-C  No. 5  pp. 1118-1123
Type of Manuscript:  Special Section PAPER (Special Section on Recent Advances in Integrated Photonic Devices)
Category: Semiconductor Devices
Keyword: 
wavelength convertersemiconductor optical amplifierMach-Zehnder interferometerlaser diode40 Gbps
 Summary | Full Text:PDF(1.1MB)