Ultra-short fiber Bragg grating intrinsic Fabry-Perot interferometric sensors for quasi-distributed strain and temperature sensing

Zhuang Wang; Ming Han; Fabin Shen; Anbo Wang

doi:10.1117/12.715489

10 April 2007 Ultra-short fiber Bragg grating intrinsic Fabry-Perot interferometric sensors for quasi-distributed strain and temperature sensing

Zhuang Wang, Ming Han, Fabin Shen, Anbo Wang

Author Affiliations +

Proceedings Volume 6529, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2007; 652935 (2007) https://doi.org/10.1117/12.715489
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2007, San Diego, California, United States

Abstract

We present an intrinsic Fabry-Perot interferometric fiber sensor for high density quasi-distributed temperature and strain measurement. The two internal partial reflection mirrors in such a sensor are formed by a pair of ultra-short fiber Bragg gratings. We experimentally demonstrate the multiplexing of 56 such sensors in a single fiber using a frequency-division multiplexing scheme. We show that theoretically as many as 500 sensors can be multiplexed. We demonstrated the experimental results of the multiplexed sensors for quasi-distributed temperature and strain measurement and the temperature compensation of strain sensors.

Citation Download Citation

Zhuang Wang, Ming Han, Fabin Shen, and Anbo Wang "Ultra-short fiber Bragg grating intrinsic Fabry-Perot interferometric sensors for quasi-distributed strain and temperature sensing", Proc. SPIE 6529, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2007, 652935 (10 April 2007); https://doi.org/10.1117/12.715489

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