Title :
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
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;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2009.2024645
