Title :
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
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;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2015.2398452
