• 文献标题:   Ultra-high-speed graphene optical modulator design based on tight field confinement in a slot waveguide
  • 文献类型:   Article
  • 作  者:   KOVACEVIC G, PHARE C, SET SY, LIPSON M, YAMASHITA S
  • 作者关键词:  
  • 出版物名称:   APPLIED PHYSICS EXPRESS
  • ISSN:   1882-0778 EI 1882-0786
  • 通讯作者地址:   Univ Tokyo
  • 被引频次:   14
  • DOI:   10.7567/APEX.11.065102
  • 出版年:   2018

▎ 摘  要

We present a design of an ultra-fast in-line graphene optical modulator on a silicon waveguide with a bandwidth exceeding 100 GHz, very small power consumption below 15 fJ/bit, and insertion loss of 1.5 dB. This is achieved by utilizing the transverse-electric-mode silicon slot to tailor the overlap of graphene electrodes, thus significantly reducing the capacitance of the device while maintaining a low insertion loss and using conservative estimates of the graphene resistance. Our design is substantiated by comprehensive finite-element-method simulations and RC circuit characterization, as well as fabrication feasibility discussion. (C) 2018 The Japan Society of Applied Physics