Broadband Graphene/Glass Hybrid Waveguide Polarizer

Author

Chongyang Pei ; Longzhi Yang ; Gencheng Wang ; Yuehai Wang ; Xiaoqing Jiang ; Yinlei Hao ; Yubo Li ; Jianyi Yang

Author_Institution

Dept. of Inf. Sci. & Electron. Eng., Zhejiang Univ., Hangzhou, China

Volume

27

Issue

9

fYear

2015

fDate

May1, 1 2015

Firstpage

927

Lastpage

930

Abstract

In this letter, a broadband planar-lightwave-circuit-type graphene/glass hybrid waveguide polarizer has been demonstrated. The polarizing effect of the polarizer is based on the difference in the attenuation between the two orthogonally polarized guided modes. The buried depth and the width of the ion-exchange glass waveguide are optimized to 2.6 and 11.5 μm, respectively. The polarization extinction ratio of the polarizer is ~27 dB in the telecommunication band with ~4-mm graphene coating length along the propagation direction. In addition, the polarization extinction ratio can be further increased by decreasing the chemical potential of the graphene film.

Keywords

antireflection coatings; extinction coefficients; graphene; integrated optics; ion exchange; light polarisation; micro-optics; optical glass; optical waveguides; optimisation; broadband planar-lightwave-circuit-type graphene-glass hybrid waveguide polarizer; chemical potential; depth 2.6 mum; graphene film coating length; ion-exchange glass waveguide optimization; orthogonally polarized guided modes; polarization extinction ratio; size 11.5 mum; telecommunication band; Erbium; Glass; Graphene; Optical films; Optical polarization; Optical waveguides; Glass waveguide; glass waveguide; graphene; integrated optics; ion-exchange; polarizer;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2015.2398452

Filename

7027850