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Proceedings Paper

Simultaneous measurements of vibration, temperature, and humidity using a SOA-based fiber Bragg grating laser
Author(s): Lutang Wang; Nian Fang; Fuxin Ding; Zhaoming Huang
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Paper Abstract

A novel SOA-based, dual-wavelength, FBG laser sensor system for simultaneously measuring vibration, temperature and humidity is demonstrated. The sensor interrogations are completed with a wavelength matching method by adjusting temperatures of two TECs to control wavelengths of two reference FBGs matching with those of two sensor FBGs. Two corresponding TEC control signals are used as detection outputs for temperature and humidity measurements. Some experimental results on simultaneous measurements of vibration, temperature of the sensor system with a FBG vibration/temperature senor and a 10-layer polyimide coating FBG humidity sensor are presented. The fundamental system performances in respects of the frequency response of system in vibration measurements and the tracing of the Bragg wavelength of sensor FBG through a TEC temperature control method were also demonstrated. The experimental results verified that the proposed FBG laser sensor system has a desired detection performance. This sensor system can be used in many industrial measurement fields, particularly in the electrical power industry for condition monitoring of power generators as well as high-voltage power transformers.

Paper Details

Date Published: 3 January 2011
PDF: 9 pages
Proc. SPIE 7990, Optical Sensors and Biophotonics II, 79900O (3 January 2011); doi: 10.1117/12.888542
Show Author Affiliations
Lutang Wang, Shanghai Univ. (China)
Nian Fang, Shanghai Univ. (China)
Fuxin Ding, Shanghai Univ. (China)
Zhaoming Huang, Shanghai Univ. (China)

Published in SPIE Proceedings Vol. 7990:
Optical Sensors and Biophotonics II
Qingming Luo; Frank Chuang; Stefan Haacke; Chih-Chung Yang, Editor(s)

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