• 文献标题:   All-optical graphene-oxide humidity sensor based on a side-polished symmetrical twin-core fiber Michelson interferometer
  • 文献类型:   Article
  • 作  者:   CHU R, GUAN CY, BO YT, SHI JH, ZHU Z, LI P, YANG J, YUAN LB
  • 作者关键词:   humidity sensor, twin core fiber, graphene oxide, sidepolished fiber, interferometer
  • 出版物名称:   SENSORS ACTUATORS BCHEMICAL
  • ISSN:   0925-4005
  • 通讯作者地址:   Harbin Engn Univ
  • 被引频次:   12
  • DOI:   10.1016/j.snb.2019.01.011
  • 出版年:   2019

▎ 摘  要

A high-sensitive graphene-oxide (GO) humidity sensor based on a side-polished twin-core fiber (SPTCF) Michelson interferometer (MI) has been demonstrated. The MI was fabricated by splicing a section of TCF to a standard single mode fiber (SMF) and tapering the splicing point. The exposed polished core has a stronger evanescent field and enhances the interaction between light and external environment. The GO-SPTCFMI can operate in the wavelength-and intensity-modulated sensor. The super-high humidity sensitivities of similar to 2.72 nm/RH% in the RH range of 40-75% and similar to 3.76 dB/RH% in the RH range of 60-62.1% are obtained experimentally. The high-performance GO-SPTCFMI is a promising candidate for potential applications, such as gas sensing and biochemical detection.