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Proceedings Paper

Design and theoretical characteristics of directional coupler-type optical polarization splitters using dielectric periodic multilayers
Author(s): Kazutaka Baba; Takenao Nakai
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Paper Abstract

Directional coupler-type optical polarization splitters using dielectric periodic multilayers have been proposed and designed. The periodic dielectric multilayer with large birefringence is loaded on one core of the directional coupler as an outer cladding layer. The periodic dielectric multilayer is designed as the effective refractive index for the TE-polarization becomes equal to that of the isotropic glass layer loaded as the outer cladding layer on another core. In addition, we used a phase-front accelerator proposed by Shiina, et al. at an abrupt bend in the core 2 to reduce an insertion loss for the TM-polarization. The insertion losses of the typically designed waveguide optical polarization splitter are less than 0.01 dB for the TM-polarization and 0.21 dB for the TE polarization. The crosstalks are calculated to be <-23 dB for the TE polarization and <-54 dB for the TM-polarization.

Paper Details

Date Published: 21 February 2011
PDF: 8 pages
Proc. SPIE 7933, Physics and Simulation of Optoelectronic Devices XIX, 793320 (21 February 2011); doi: 10.1117/12.873334
Show Author Affiliations
Kazutaka Baba, Sendai National College of Technology (Japan)
Takenao Nakai, Sendai National College of Technology (Japan)


Published in SPIE Proceedings Vol. 7933:
Physics and Simulation of Optoelectronic Devices XIX
Bernd Witzigmann; Fritz Henneberger; Yasuhiko Arakawa; Alexandre Freundlich, Editor(s)

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