Toshikazu HASHIMOTO


Integrated Photonic Devices and Applications for 100GbE-and-Beyond Datacom
Yoshiyuki DOI Takaharu OHYAMA Toshihide YOSHIMATSU Tetsuichiro OHNO Yasuhiko NAKANISHI Shunichi SOMA Hiroshi YAMAZAKI Manabu OGUMA Toshikazu HASHIMOTO Hiroaki SANJOH 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2016/02/01
Vol. E99-C  No. 2  pp. 157-164
Type of Manuscript:  INVITED PAPER (Special Section on Recent Advances in Photonics Technologies and Their Applications)
Category: 
Keyword: 
integrated photonicsdatacom100GbE/400GbEoptical sub-assemblyarrayed waveguide grating
 Summary | Full Text:PDF

Compact and Athermal DQPSK Demodulator with Silica-Based Planar Lightwave Circuit
Yusuke NASU Yohei SAKAMAKI Kuninori HATTORI Shin KAMEI Toshikazu HASHIMOTO Takashi SAIDA Hiroshi TAKAHASHI Yasuyuki INOUE 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/07/01
Vol. E93-C  No. 7  pp. 1191-1198
Type of Manuscript:  PAPER
Category: Optoelectronics
Keyword: 
differential quadrature phase-shift keying (DQPSK)Mach-ZehnderDelay-line interferometeroptical planar waveguides
 Summary | Full Text:PDF

New Planar Lightwave Circuit (PLC) Platform Eliminating Si Terraces and Its Application to Opto-electronic Hybrid Integrated Modules
Takashi YAMADA Toshikazu HASHIMOTO Takaharu OHYAMA Yuji AKAHORI Akimasa KANEKO Kazutoshi KATO Ryouichi KASAHARA Mikitaka ITO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/05/01
Vol. E84-B  No. 5  pp. 1311-1318
Type of Manuscript:  Special Section PAPER (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
Category: Optical Passive Devices and Modules
Keyword: 
PLC platform structure eliminating Si terraceshybrid integration techniqueoptical transceiver module8-channel multi-wavelength photoreceiver
 Summary | Full Text:PDF

New Planar Lightwave Circuit (PLC) Platform Eliminating Si Terraces and Its Application to Opto-electronic Hybrid Integrated Modules
Takashi YAMADA Toshikazu HASHIMOTO Takaharu OHYAMA Yuji AKAHORI Akimasa KANEKO Kazutoshi KATO Ryouichi KASAHARA Mikitaka ITO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2001/05/01
Vol. E84-C  No. 5  pp. 685-692
Type of Manuscript:  Special Section PAPER (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
Category: Optical Passive Devices and Modules
Keyword: 
PLC platform structure eliminating Si terraceshybrid integration techniqueoptical transceiver module8-channel multi-wavelength photoreceiver
 Summary | Full Text:PDF

Hybrid External Cavity Lasers Composed of Spot-Size Converter Integrated LDs and UV Written Bragg Gratings in a Planar Lightwave Circuit on Si
Takuya TANAKA Hiroshi TAKAHASHI Yoshinori HIBINO Toshikazu HASHIMOTO Akira HIMENO Yasufumi YAMADA Yuichi TOHMORI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2000/06/25
Vol. E83-C  No. 6  pp. 875-883
Type of Manuscript:  Special Section PAPER (Special Issue on Advanced Optical Devices for Next Generation High-Speed Communication Systems and Photonic Networks)
Category: WDM Network Devices
Keyword: 
external cavity laserhybrid integrationgratingmultiwavelength laserPLC
 Summary | Full Text:PDF

1.3/1.55-µm Full-Duplex WDM Optical Transceiver Modules for ATM-PON (PDS) Systems Using PLC-Hybrid-Integration and CMOS-IC Technologies
Takeshi KUROSAKI Toshikazu HASHIMOTO Noboru ISHIHARA Yasuhiro SUZUKI Masahiro YANAGISAWA Hideaki KIMURA Makoto NAKAMURA Yuichi TOHMORI Kazutoshi KATO Yoshihiro KAWAGUCHI Yuji AKAHORI Yasufumi YAMADA Kuniharu KATO Hiromu TOBA Junichi YOSHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1999/08/25
Vol. E82-B  No. 8  pp. 1199-1208
Type of Manuscript:  Special Section PAPER (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
Category: Optical Active Devices and Modules
Keyword: 
optical transceiver modulePLChybrid integrationCMOS ICATM PONfull-duplex operation
 Summary | Full Text:PDF

A 1.55-µm Hybrid Integrated Wavelength-Converter Module Using Spot-Size Converter Integrated Semiconductor Optical Amplifiers on a Planar-Lightwave-Circuit Platform
Rieko SATO Yasuhiro SUZUKI Naoto YOSHIMOTO Ikuo OGAWA Toshikazu HASHIMOTO Toshio ITO Akio SUGITA Yuichi TOHMORI Hiromu TOBA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/08/25
Vol. E82-C  No. 8  pp. 1487-1493
Type of Manuscript:  Special Section PAPER (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
Category: Optical Active Devices and Modules
Keyword: 
hybrid integrationspot-size converter integrated semiconductor optical amplifierplanar-lightwave-circuit platformwavelength conversiontemperature dependence
 Summary | Full Text:PDF

A 1.55-µm Hybrid Integrated Wavelength-Converter Module Using Spot-Size Converter Integrated Semiconductor Optical Amplifiers on a Planar-Lightwave-Circuit Platform
Rieko SATO Yasuhiro SUZUKI Naoto YOSHIMOTO Ikuo OGAWA Toshikazu HASHIMOTO Toshio ITO Akio SUGITA Yuichi TOHMORI Hiromu TOBA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1999/08/25
Vol. E82-B  No. 8  pp. 1221-1227
Type of Manuscript:  Special Section PAPER (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
Category: Optical Active Devices and Modules
Keyword: 
hybrid integrationspot-size converter integrated semiconductor optical amplifierplanar-lightwave-circuit platformwavelength conversiontemperature dependence
 Summary | Full Text:PDF

1.3/1.55-µm Full-Duplex WDM Optical Transceiver Modules for ATM-PON (PDS) Systems Using PLC-Hybrid-Integration and CMOS-IC Technologies
Takeshi KUROSAKI Toshikazu HASHIMOTO Noboru ISHIHARA Yasuhiro SUZUKI Masahiro YANAGISAWA Hideaki KIMURA Makoto NAKAMURA Yuichi TOHMORI Kazutoshi KATO Yoshihiro KAWAGUCHI Yuji AKAHORI Yasufumi YAMADA Kuniharu KATO Hiromu TOBA Junichi YOSHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/08/25
Vol. E82-C  No. 8  pp. 1465-1474
Type of Manuscript:  Special Section PAPER (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
Category: Optical Active Devices and Modules
Keyword: 
optical transceiver modulePLChybrid integrationCMOS ICATM PONfull-duplex operation
 Summary | Full Text:PDF