Katsumi NAKATSUHARA


Study on Analysis and Fabrication Conditions of Horizontal SiO2 Slot Waveguides Using Nb2O5
Yoshiki HAYAMA Katsumi NAKATSUHARA Shinta UCHIBORI Takeshi NISHIZAWA 
Publication:   
Publication Date: 2020/11/01
Vol. E103-C  No. 11  pp. 669-678
Type of Manuscript:  Special Section PAPER (Special Section on Opto-electronics and Communications for Future Optical Network)
Category: 
Keyword: 
horizontal slot waveguideniobium oxidethin film depositionfinite-element-method
 Summary | Full Text:PDF

Si-Waveguide with Ferro-Electric Liquid Crystal Cladding for Use in Optical Switching Devices
Katsumi NAKATSUHARA Toyokazu SASAKI Hiroki SATO Takakiyo NAKAGAMI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/05/01
Vol. E90-C  No. 5  pp. 1055-1060
Type of Manuscript:  Special Section PAPER (Special Section on Recent Advances in Integrated Photonic Devices)
Category: High Index Contrast and Photonic Crystal Devices
Keyword: 
optical switching deviceferro-electric liquid crystalwaveguide device
 Summary | Full Text:PDF

GaInAsP/InP Directional Coupler Loaded with Grating for Optically-Controlled Switching
Katsumi NAKATSUHARA Takashi SHIRADO Seok-Hwan JEONG Tetsuya MIZUMOTO Mitsuru TAKENAKA Yoshiaki NAKANO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/04/01
Vol. E85-C  No. 4  pp. 1039-1045
Type of Manuscript:  Special Section PAPER (Special Issue on Recent Progress of Integrated Photonic Devices)
Category: New Devices
Keyword: 
integrated opticsoptical waveguideBragg gratingnonlinear opticsphotonic switch
 Summary | Full Text:PDF