Graphene Assisted TE/TM-Independent Polarizer Based on Mach–Zehnder Interferometer

Author

Ran Hao ; Wei Du ; Er-Ping Li ; Hong-Sheng Chen

Author_Institution

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

Volume

27

Issue

10

fYear

2015

fDate

May15, 15 2015

Firstpage

1112

Lastpage

1115

Abstract

We presented a versatile polarizer, independent on the polarization of the incident light, by coating the silicon waveguide with graphene. The proposed polarizer works in two operation states, namely, TE-pass state and TM-pass state, which are based on the different effective mode index variations. Therefore, it is able to combine both TE-pass and TM-pass functionalities into one single component. The proposed device provides a compact size of 70 μm × 2 μm, a high extinction ratio of 19 dB for the TE-pass state and of 21 dB for the TM-pass state. Furthermore, this device exhibits a wide working bandwidth from 1500 to 1800 nm.

Keywords

Mach-Zehnder interferometers; graphene; optical polarisers; optical waveguides; silicon; C-Si; Mach-Zehnder interferometer; TE-pass state; TM-pass state; coating; compact size; effective mode index variations; extinction ratio; graphene assisted TE/TM-independent polarizer; incident light polarization; silicon waveguide; wide working bandwidth; Chemicals; Erbium; Graphene; Indexes; Optical waveguides; Permittivity; Silicon; Graphene; TE-pass; TM PASS; TM-pass; band range; extinction ratio; graphene; polarizer;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2015.2408375

Filename

7051242