• 文献标题:   Experimental demonstration of a graphene-based hybrid plasmonic modulator
  • 文献类型:   Article
  • 作  者:   HAO R, JIAO JY, PENG XL, ZHEN Z, DAGARBEK R, ZOU YJ, LI E
  • 作者关键词:  
  • 出版物名称:   OPTICS LETTERS
  • ISSN:   0146-9592 EI 1539-4794
  • 通讯作者地址:   Zhejiang Univ
  • 被引频次:   12
  • DOI:   10.1364/OL.44.002586
  • 出版年:   2019

▎ 摘  要

In this Letter, we report a graphene-based hybrid plasmonic modulator (GHPM) realized by employing the electro-absorption effect of graphene. The simulation results show that the modulation efficiency of GHPM, i.e., extinction ratio per length, can be as large as 0.417 dB/mu m, which is more than twice as much as that of recently presented graphene-on-silicon modulator. It was found that the improvement in modulation efficiency is mainly due to the enhancement of the overlap between graphene and the mode field in GHPM. A prototype of GHPM was fabricated. The measurement results showed that the GHPM can work in a broadband from 1530 to 1570 nm and an improved modulation efficiency of 1.08 dB (at 30 mu m). Finally, we have discussed the factors that influence the modulation efficiency. Our proof-of-concept design may promote the development of on-chip graphene-based plasmonic devices. (C) 2019 Optical Society of America