Photonic Sensors, Volume. 6, Issue 4, 318(2016)
Cost-Effective Fiber Multiplexing System Based on Low Coherence Interferometers and Application to Temperature Measurement
Based on the low-coherence interferometric principles, a cost-effective all-fiber Mach-Zehnder multiplexing system is proposed and demonstrated. The system consists of two interferometers: sensing interferometer and demodulation interferometer. By scanning an optical tunable delay line back and forth constantly with a stable speed, sensing fibers with different optical paths can be temporal interrogated. The system is experimentally proved to have a high performance with a good stability and low system noises. The multiplexing capacity of the system is also investigated. An experiment of measuring the surrounding temperature is carried out. A sensitivity of 12 μm/℃ is achieved within the range of 20 ℃ to 80 ℃. This low cost fiber multiplexing system has a potential application in the remote monitoring of temperature and strain in building structures, such as bridges and towers.
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Meng JIANG, Zhongze ZHAO, Kun LI, Zeming WANG, Yage ZHAN, Hongying ZHOU, Fu YANG. Cost-Effective Fiber Multiplexing System Based on Low Coherence Interferometers and Application to Temperature Measurement[J]. Photonic Sensors, 2016, 6(4): 318
Category: Regular
Received: May. 19, 2016
Accepted: Aug. 31, 2016
Published Online: Oct. 21, 2016
The Author Email: JIANG Meng (jiangmeng@dhu.edu.cn)