Toshifumi HASAMA


Built-In Microplanar Lens for Light Coupling to Two-Dimensional Photonic Crystal Waveguide
Naoki IKEDA Yu TANAKA Hitoshi KAWASHIMA Yoshimasa SUGIMOTO Toshifumi HASAMA Kiyoshi ASAKAWA Hiroshi ISHIKAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/02/01
Vol. E95-C  No. 2  pp. 243-246
Type of Manuscript:  BRIEF PAPER
Category: 
Keyword: 
integrated opticsphotonic crystalswaveguides
 Summary | Full Text:PDF

All-Optical Demultiplexing from 160 to 40/80 Gb/s Using Mach-Zehnder Switches Based on Intersubband Transition of InGaAs/AlAsSb Coupled Double Quantum Wells
Ryoichi AKIMOTO Guangwei CONG Masanori NAGASE Teruo MOZUME Hidemi TSUCHIDA Toshifumi HASAMA Hiroshi ISHIKAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2009/02/01
Vol. E92-C  No. 2  pp. 187-193
Type of Manuscript:  INVITED PAPER (Special Section on Recent Advances in Integrated Photonic Devices)
Category: 
Keyword: 
intersubband transitioncoupled double quantum wellcross-phase modulationMach-Zehnder interferometerall-optical demultiplexing
 Summary | Full Text:PDF