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Optical Engineering

Hybrid long-period-grating and fiber Bragg grating for cladding-mode-recoupling-based discrimination of temperature and strain
Author(s): An Sun; Zhishen Wu
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Paper Abstract

The use of cladding-mode-recoupling-based hybrid long period grating (LPG)/fiber Bragg grating (FBG) sensors for the simultaneous measurement of temperature and strain is proposed. A set of counter-propagation cladding modes can be achieved through a specially fabricated hybrid LPG/FBG structure, and experimental results indicate that the intensity of cladding modes and FBG resonance show different temperature and strain response, which can be used for simultaneous measurement of temperature and strain through power-reference-based ratiometric detection.

Paper Details

Date Published: 11 April 2012
PDF: 4 pages
Opt. Eng. 51(4) 044402 doi: 10.1117/1.OE.51.4.044402
Published in: Optical Engineering Volume 51, Issue 4
Show Author Affiliations
An Sun, Southeast Univ. (China)
Zhishen Wu, Southeast Univ. (China)

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