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

被引：119

作者：

Liu, T ^{[1
]}

Zakharian, AR

Fallahi, M

Moloney, JV

Mansuripur, M

机构：

[1] Univ Arizona, Ctr Opt Sci, Tucson, AZ 85721 USA

[2] Univ Arizona, Dept Math, Ctr Opt Sci, Tucson, AZ 85721 USA

[3] Univ Arizona, Dept Math, Arizona Ctr Math Sci, Tucson, AZ 85721 USA

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2005年 / 17卷 / 07期

基金：

美国国家科学基金会;

关键词：

optical waveguides; photonic crystals (PCs); polarizing beam splitters (PBSs);

D O I：

10.1109/LPT.2005.848278

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 [电气工程]; 0809 [电子科学与技术];

摘要：

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 mu m. 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.

引用

收藏

页码：1435 / 1437

页数：3

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