11 April 2012 Hybrid long-period-grating and fiber Bragg grating for cladding-mode-recoupling-based discrimination of temperature and strain
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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.
© 2012 Society of Photo-Optical Instrumentation Engineers (SPIE)
An Sun, Zhishen Wu, "Hybrid long-period-grating and fiber Bragg grating for cladding-mode-recoupling-based discrimination of temperature and strain," Optical Engineering 51(4), 044402 (11 April 2012). https://doi.org/10.1117/1.OE.51.4.044402 . Submission:
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