Optical fiber Mach-zehnder interferometric strain sensor basedon concatenating two micro cavities fabricated by a femtosecond laser

Jinpeng Yang, Sumei Wang, Xiaoguang Chen, Xiaofeng Zou, Yuxiao Liu, Ruo Lin, Yimin Wang, Yang Chenl

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

An optical fiber Mach-Zehnder interferometer (MZI) is proposed by concatenating two micro cavities that are fabricated by a femtosecond laser. The interferometer is applied for strain sensing with a sensitivity of -664.2 nm/specialeqno='A2' which is comparable to long period fiber grating and taperbased strain sensors. Also, it exhibits a good reversibility in loading and unloading processes. The relationship between intensity variation and applied strain is a quadratic function. The refractive index dependence and temperature dependence of the interferometer are also investigated. Further, this structure is more robust than taper- or trench-based fiber sensors because of no reduction in fiber diameter direction.

Original languageEnglish
Title of host publication2019 IEEE 10th International Conference on Mechanical and Aerospace Engineering, ICMAE 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages533-538
Number of pages6
ISBN (Electronic)9781728155357
DOIs
Publication statusPublished - Jul 2019
Event10th IEEE International Conference on Mechanical and Aerospace Engineering, ICMAE 2019 - Brussels, Belgium
Duration: 22 Jul 201925 Jul 2019

Publication series

Name2019 IEEE 10th International Conference on Mechanical and Aerospace Engineering, ICMAE 2019

Conference

Conference10th IEEE International Conference on Mechanical and Aerospace Engineering, ICMAE 2019
Country/TerritoryBelgium
CityBrussels
Period22/07/1925/07/19

Keywords

  • Femtosecond laser
  • Optical fiber Mach-Zehnder interferometric
  • Strain sensor

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