Title

Compact bidirectional metallic-dielectric-air polarization splitter based on a cascaded grating

Document Type

Journal Article

Publisher

Institute of Electrical and Electronics Engineers

Faculty

Faculty of Health, Engineering and Science

School

Electron Science Research Institute

RAS ID

19250

Comments

This article was originally published as: Li K., Xiao F., Lu F., Xu A. (2014). Compact bidirectional metallic-dielectric-air polarization splitter based on a cascaded grating. IEEE Photonics Technology Letters, 26(1), 54-57. Original article available here

Abstract

A compact bidirectional polarization splitter based on two cascaded sub-gratings in a metallic-dielectric-air (MDA) waveguide is proposed and theoretically analyzed. The normally incident beam coupled to the MDA waveguide is split into left-going TE- and right-going TM-polarized modes by the structure. The operation principle is clarified and a coupled-mode model is developed for facilitating design. The polarization extinction ratio better than 33 dB and crosstalk less than -41 dB for TE-polarized mode and the corresponding 36 and -28 dB for TM-polarized mode are achieved at the operating wavelength 850 nm.

DOI

10.1109/LPT.2013.2289016

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