Design of a compact photonic-crystal-based polarizing beam splitter

Tao Liu, Armis R. Zakharian, Mahmoud Fallahi, Jerome V. Moloney, Masud Mansuripur

Research output: Contribution to journalArticle

108 Scopus citations

Abstract

A compact polarizing beam splitter based on a photonic crystal (PC) directional coupler with a triangular lattice of air holes is designed and simulated. In the employed PC structure, transverse-electric (TE) light is confined with the photonic bandgap effect, while transverse-magnetic (TM) light is guided through an index-like effect. Due to the different guiding mechanisms, TM and TE light have strikingly different beat lengths, which is utilized to separate the two polarizations in a directional coupler no longer than 24.2 μm. The two-dimensional finite-difference time-domain method of computation is used to evaluate the device performance. The extinction ratios are found to be around 20 dB for both TE and TM polarized light.

Original languageEnglish (US)
Pages (from-to)1435-1437
Number of pages3
JournalIEEE Photonics Technology Letters
Volume17
Issue number7
DOIs
StatePublished - Jul 1 2005

Keywords

  • Optical waveguides
  • Photonic crystals (PCs)
  • Polarizing beam splitters (PBSs)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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