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

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8 Author(s)
Frazao, O. ; Inst. de Eng. de Sist. e Comput. do Porto (INESC Porto), Porto, Portugal ; Aref, S.H. ; Baptista, J.M. ; Santos, J.L.
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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.

Published in:

Photonics Technology Letters, IEEE  (Volume:21 ,  Issue: 17 )