• 文献标题:   Graphene Assisted TE/TM-Independent Polarizer Based on Mach-Zehnder Interferometer
  • 文献类型:   Article
  • 作  者:   HAO R, DU W, LI EP, CHEN HS
  • 作者关键词:   graphene, tepas, tmpas, polarizer, extinction ratio, band range
  • 出版物名称:   IEEE PHOTONICS TECHNOLOGY LETTERS
  • ISSN:   1041-1135 EI 1941-0174
  • 通讯作者地址:   Zhejiang Univ
  • 被引频次:   23
  • DOI:   10.1109/LPT.2015.2408375
  • 出版年:   2015

▎ 摘  要

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 mu m x 2 mu m, 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.