• 文献标题:   Graphene-channel FETs for photonic frequency double-mixing conversion over the sub-THz band
  • 文献类型:   Article
  • 作  者:   KAWASAKI T, SUGAWARA K, DOBROIU A, ETO T, KURITA Y, KOJIMA K, YABE Y, SUGIYAMA H, WATANABE T, SUEMITSU T, RYZHII V, IWATSUKI K, FUKADA Y, KANI J, TERADA J, YOSHIMOTO N, KAWAHARA K, AGO H, OTSUJI T
  • 作者关键词:   graphene, fet, photomixing, terahertz, photoresponse
  • 出版物名称:   SOLIDSTATE ELECTRONICS
  • ISSN:   0038-1101 EI 1879-2405
  • 通讯作者地址:   Tohoku Univ
  • 被引频次:   11
  • DOI:   10.1016/j.sse.2014.07.009
  • 出版年:   2015

▎ 摘  要

We report on photonic frequency double-mixing conversion utilizing a graphene-channel FET (G-FET). Optoelectronic properties of graphene are exploited to perform single-chip photonic double-mixing functionality, which is greatly advantageous in future broadband technological conversion between optical fiber and sub-terahertz wireless communications. A1 GHz modulation signal on a 125 GHz carrier is electrically input to the gate, whereas a 1.58 mu m dual wavelength CW laser beam having a frequency difference of 112.5 GHz impinges on the G-FET. The G-FET works as a photomixer generating a 112.5 GHz local signal which is then electrically mixed to the 1 GHz modulated 125 GHz carrier signal, resulting in the down-conversion of the 1 GHz signal to a 12.5 GHz intermediate frequency (IF) signal. (C) 2014 Elsevier Ltd. All rights reserved.