A Fabry–Pérot interferometer strain sensor composed of a rounded rectangular air cavity with a thin wall for high sensitivity and interference contrast

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Qiao Li
  • Jianxin Wang
  • Haiwei Mu
  • Jingwei Lv
  • Lin Yang
  • Ying Shi
  • Zao Yi
  • Qiang Liu
  • Chao Liu

Detail(s)

Original languageEnglish
Article number128920
Journal / PublicationOptics Communications
Volume527
Online published29 Aug 2022
Publication statusPublished - 15 Jan 2023

Abstract

A Fabry–Pérot interferometer (FPI) strain sensor with high sensitivity and interference contrast is designed and fabricated by a simple, cost effective, and safe process which can be scaled up for commercial production. The excellent strain sensitivity of 8 pm/μɛ and interference contrast of 25 dB stem from the special structure with the unique air cavity, small wall thickness, and excellent reflection surface of the air cavity. The strain-temperature cross-sensitivity of the sensor is only 0.59 μɛ/°C in the temperature range of 20–80°C. The sensor has large potential in applications such as strain sensing.

Research Area(s)

  • Air cavity, Fabry–Pérot interferometer, Interference contrast, Optical fiber sensor, Strain sensitivity

Citation Format(s)

A Fabry–Pérot interferometer strain sensor composed of a rounded rectangular air cavity with a thin wall for high sensitivity and interference contrast. / Li, Qiao; Wang, Jianxin; Mu, Haiwei et al.

In: Optics Communications, Vol. 527, 128920, 15.01.2023.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review