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Proceedings Paper

An intensity modulation based high-speed and high-resolution long-period fiber grating sensor interrogating system
Author(s): Chia-Chin Chiang; Chow-Shing Shin; Shien-Kuei Liaw
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Paper 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.

Paper Details

Date Published: 17 October 2006
PDF: 8 pages
Proc. SPIE 6377, Advanced Environmental, Chemical, and Biological Sensing Technologies IV, 63770W (17 October 2006); doi: 10.1117/12.685925
Show Author Affiliations
Chia-Chin Chiang, National Kaohsiung Univ. of Applied Science (Taiwan)
Chow-Shing Shin, National Taiwan Univ. (Taiwan)
Shien-Kuei Liaw, National Taiwan Univ. of Science and Technology (Taiwan)


Published in SPIE Proceedings Vol. 6377:
Advanced Environmental, Chemical, and Biological Sensing Technologies IV
Tuan Vo-Dinh; Robert A. Lieberman; Günter Gauglitz, Editor(s)

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