Novel Compact and low-Cost Ultraweak Fabry-Perot Interferometer as a Highly Sensitive Refractive Index Sensor

Pengcheng Chen, Xuewen Shu, Haoran Cao

Research output: Contribution to journalArticle

Abstract

A novel compact refractive index (RI) sensor based on an ultra-weak intrinsic fiber Fabry-Perot interferometer (FPI) is proposed and demonstrated, which is simply fabricated by splicing a tiny section of thin-core fiber to a single-mode fiber. Such an FPI exhibits an average RI sensitivity of 240dB/RIU over a wide RI range of 1.3326-1.4305, with a maximum sensitivity of 1110.7dB/RIU at the RI of 1.4305. In addition, the FPI can also achieve the simultaneous measurement of the RI and temperature.

Original languageEnglish
Article number7995042
JournalIEEE Photonics Journal
Volume9
Issue number5
Early online date28 Jul 2017
DOIs
Publication statusPublished - 1 Oct 2017

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Keywords

  • Fabry-Perot interference
  • fiber fusion
  • high sensitivity
  • no temperature crosstalk.
  • Optical fiber
  • refractive index sensing

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