• 文献标题:   A subwavelength high modulation depth optical modulator based on bilayer graphene
  • 文献类型:   Review
  • 作  者:   WANG YD, LIU HX, WANG SL, CAI M
  • 作者关键词:   graphene, modulator, surface plasmon polariton
  • 出版物名称:   OPTICAL MATERIALS
  • ISSN:   0925-3467 EI 1873-1252
  • 通讯作者地址:  
  • 被引频次:   1
  • DOI:   10.1016/j.optmat.2021.111139 EA MAY 2021
  • 出版年:   2021

▎ 摘  要

In this paper, a waveguide-integrated graphene-based modulator at 1550 nm is presented, which consists of a hybrid waveguide and bilayer graphene. The strong light absorption of graphene is realized by inserting bilayer graphene into the mode coupling region of the hybrid waveguide and simultaneously taking advantage of SPPs effect as well as the electric field enhancement in the coupling region. The modulator shows excellent performance including 100% modulation depth, low power dissipation of 0.074 fJ/bit, small device size of 600 nm x 350 nm x 350 nm and wide 3 dB bandwidth of 319 GHz. In addition, results proved that the presented modulator is robust and its properties are quite tolerant to fabrication errors. These excellent properties make our proposal have great potential in application of optoelectronic integrated circuit.