A dual-parameter active fibre sensor based on modal interference in few-mode fibres

Hongdan Wan, Hongye Li, Zuxing Zhang, Chao Pan, Bing Sun, Changle Wang, Lin Zhang

Research output: Chapter in Book/Report/Conference proceedingConference publication

Abstract

We propose a dual-parameter active fibre sensor based on a fibre ring laser using a single-mode-Two-mode-single-mode (STS) fibre interferemeter and a four-mode FBG as the intracavity dual-parameter sensing element. The interferometric spectra of the STS are investigated with different core-offset parameters and few-mode fibre length. The highest LP11 mode excitation ratio is achieved with a 6μm core-offset distance in the STS which achieves best sensing ability. High precision dual-parameter sensing of pressure and tension are achieved experimentally by measurements of fibre laser output wavelength and intensity.

Original languageEnglish
Title of host publicationICOCN 2016 - 2016 15th International Conference on Optical Communications and Networks
PublisherIEEE
Number of pages3
ISBN (Electronic)978-1-5090-3491-8
DOIs
Publication statusPublished - 10 Mar 2017
Event15th International Conference on Optical Communications and Networks, ICOCN 2016 - Hangzhou, China
Duration: 24 Sep 201627 Sep 2016

Conference

Conference15th International Conference on Optical Communications and Networks, ICOCN 2016
CountryChina
CityHangzhou
Period24/09/1627/09/16

Bibliographical note

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Keywords

  • active fibre sensor
  • core-offset
  • dual-parameter
  • four-mode FBG
  • single-mode-Two-mode-single-mode

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