Fabry–PÉrot Cavity Based on a Suspended-Core Fiber for Strain and Temperature Measurement

Author

Frazão, Orlando ; Aref, S.H. ; Baptista, José M. ; Santos, José L. ; Latifi, H. ; Farahi, F. ; Kobelke, Jens ; Schuster, Kay

Author_Institution

Inst. de Eng. de Sist. e Comput. do Porto (INESC Porto), Porto, Portugal

Volume

21

Issue

17

fYear

2009

Firstpage

1229

Lastpage

1231

Abstract

A fiber-optic Fabry-Perot sensing structure based on the utilization of a suspended-core fiber is presented. The interferometric structure is formed when a small length of the suspended-core fiber is spliced to the end of a standard single-mode fiber. The interfering waves are generated by the refractive-index mismatches between the two fibers in the splice region and at the end of the suspended-core fiber. Thermal and strain responses of two different sensing heads associated with suspended-core fibers with three and four holes are characterized.

Keywords

Fabry-Perot interferometers; cavity resonators; fibre optic sensors; refractive index; strain measurement; strain sensors; temperature measurement; temperature sensors; Fabry-Perot cavity; fiber-optic Fabry-Perot sensing structure; interferometric structure; refractive-index mismatch; standard single-mode fiber; strain measurement; suspended-core fiber; temperature measurement; Fabry–PÉrot (FP) interferometer; microstructured fiber; optical fiber sensor;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2009.2024645

Filename

5161323