Hirohisa YOKOTA


Fabrication of Polarization-Maintaining Photonic Crystal Fiber Coupler with Air Hole State Control Using CO2 Laser Irradiation Technique
Hirohisa YOKOTA Yusuke ITO Hiroki KAWASHIRI Hideyuki KIUE Hideo TOBITA Yoh IMAI Yutaka SASAKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/10/01
Vol. E95-C  No. 10  pp. 1689-1691
Type of Manuscript:  BRIEF PAPER
Category: Optoelectronics
Keyword: 
photonic crystal fiberpolarization-maintaining fiberoptical fiber couplerpolarization dependent coupling characteristicsCO2 laser irradiation technique
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Designs and Fabrications of Photonic Crystal Fiber Couplers with Air Hole Controlled Tapers
Hirohisa YOKOTA Hiroki KAWASHIRI Yutaka SASAKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/07/01
Vol. E91-C  No. 7  pp. 1136-1141
Type of Manuscript:  Special Section PAPER (Joint Special Section on Opto-electronics and Communications toward NGN and beyond)
Category: 
Keyword: 
photonic crystal fiberoptical fiber couplerbeam propagation methodCO2 laser irradiation technique
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Design of Polarization-Maintaining Optical Fiber Suitable for Thermally-Diffused Expanded Core Techniques
Hirohisa YOKOTA Emiko OKITSU Yutaka SASAKI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1997/04/25
Vol. E80-B  No. 4  pp. 516-521
Type of Manuscript:  Special Section PAPER (Special Issue on Optical Fibers and Their Applications)
Category: 
Keyword: 
polarization-maintaining fiberTEC fiberstress analysisbeam propagation method
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Numerical Analysis of an Optical X Coupler with a Nonlinear Dielectric Region
Hirohisa YOKOTA Koichi KIMURA Sadao KURAZONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1995/01/25
Vol. E78-C  No. 1  pp. 61-66
Type of Manuscript:  Special Section PAPER (Special Issue on Ultrafast Optoelectronics)
Category: 
Keyword: 
iterative FD-BPMnonlinear dielectricsoptical couplerall-optical switching
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