Temperature-Independent Ultrasensitive Fabry–Perot All-Fiber Strain Sensor Based on a Bubble-Expanded Microcavity

Author

Chenchen Yin ; Zhigang Cao ; Zhao Zhang ; Tao Shui ; Rui Wang ; Jian Wang ; Liang Lu ; Shenglai Zhen ; Benli Yu

Author_Institution

Key Lab. of Opto-Electron. Inf. Acquisition & Manipulation of Minist. of Educ., Anhui Univ., Hefei, China

Volume

6

Issue

4

fYear

2014

fDate

Aug. 2014

Firstpage

1

Lastpage

9

Abstract

A fiber Fabry-Perot interferometer (FPI) based on a bubble-expanded microcavity is investigated in this paper. Due to the expanded bubble microcavity, the FPI exhibits high strain sensitivity of 30.66 pm/με. To the best of our knowledge, such strain sensitivity is three to ten times higher than that of the fiber FPIs based on the microcavities previously reported. The strain response of the FPI with different shapes is analyzed, and the experimental results are consistent with the theoretical analysis.

Keywords

Fabry-Perot interferometers; fibre optic sensors; micro-optics; microcavities; optical resonators; strain sensors; bubble-expanded microcavity; fiber Fabry-Perot interferometer; strain response; strain sensitivity; temperature-independent ultrasensitive Fabry-Perot all-fiber strain sensor; Cavity resonators; Microcavities; Optical fiber sensors; Optical fibers; Sensitivity; Splicing; Strain; Fabry-Perot; Fiber optics sensors; strain sensor; temperature-independent;

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2014.2345883

Filename

6872790