Title

Bidirectional polarization splitting couplers based on dielectric-coated metallic gratings

Document Type

Journal Article

Publisher

IEEE Press

Faculty

Faculty of Health, Engineering and Science

School

Electron Science Research Institute

RAS ID

17407

Comments

This article was originally published as: Lu, F., Xiao, F. , Li, K., Wang, Z., & Xu, A. (2013). Bidirectional polarization splitting couplers based on dielectric-coated metallic gratings. IEEE Photonics Technology Letters, 25(17), 1695-1698. Original article available here (c) 20xx IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.

Abstract

A new bidirectional polarization splitting coupler based on a metal thin film perforated with periodic slits and coated with dielectric is proposed and theoretically investigated. The back-side incident light coupled to the metal-dielectric-air waveguide is split and launched into TM plasmonic and TE photonic modes simultaneously. The operation principle is clarified and theoretically illustrated using the fully vectorial aperiodic Fourier modal method. Polarization extinction ratios better than 15 dB and crosstalk less than 15 dB are achieved for both polarizations over C-band ranging from 1530 to 1570 nm.

Share

 
COinS