Design and theoretical characteristics of directional coupler-type optical polarization splitters using dielectric periodic multilayers

Kazutaka Baba; Takenao Nakai

doi:10.1117/12.873334

21 February 2011 Design and theoretical characteristics of directional coupler-type optical polarization splitters using dielectric periodic multilayers

Kazutaka Baba, Takenao Nakai

Author Affiliations +

Proceedings Volume 7933, Physics and Simulation of Optoelectronic Devices XIX; 793320 (2011) https://doi.org/10.1117/12.873334
Event: SPIE OPTO, 2011, San Francisco, California, United States

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.

Citation Download Citation

Kazutaka Baba and Takenao Nakai "Design and theoretical characteristics of directional coupler-type optical polarization splitters using dielectric periodic multilayers", Proc. SPIE 7933, Physics and Simulation of Optoelectronic Devices XIX, 793320 (21 February 2011); https://doi.org/10.1117/12.873334

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