An intensity modulation based high-speed and high-resolution long-period fiber grating sensor interrogating system

Chia-Chin Chiang; Chow-Shing Shin; Shien-Kuei Liaw

doi:10.1117/12.685925

17 October 2006 An intensity modulation based high-speed and high-resolution long-period fiber grating sensor interrogating system

Chia-Chin Chiang, Chow-Shing Shin, Shien-Kuei Liaw

Author Affiliations +

Proceedings Volume 6377, Advanced Environmental, Chemical, and Biological Sensing Technologies IV; 63770W (2006) https://doi.org/10.1117/12.685925
Event: Optics East 2006, 2006, Boston, Massachusetts, United States

Abstract

A fast responding interrogation system based on intensity modulation using fiber Bragg gratings (FBG) has been developed to interrogate long period fiber grating (LPFG) sensor. Temperature and dynamic strain monitoring using this system have been successfully demonstrated. The performance of long period fiber grating (LPFG) sensors written in single cladding (SC) and double cladding (DC) fibers have been compared. This system is capable of resolving strain to 0.2με and 0.4με at a loading frequency of 20 Hz, and temperature resolution to 0.02°C and 0.19°C, by using LPFG in the single cladding (SC-LPFG) and double cladding (DC-LPFG) respectively.

Citation Download Citation

Chia-Chin Chiang, Chow-Shing Shin, and Shien-Kuei Liaw "An intensity modulation based high-speed and high-resolution long-period fiber grating sensor interrogating system", Proc. SPIE 6377, Advanced Environmental, Chemical, and Biological Sensing Technologies IV, 63770W (17 October 2006); https://doi.org/10.1117/12.685925

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