Multi-functional optical fiber sensor system based on a dense wavelength division multiplexerProject supported by the National Key Research and Development Program of China (Grant No. 2016YFB0402504), the National Natural Science Foundation of China (Grant Nos. 61875069 and 61575076), Hong Kong Scholars Program, China (Grant No. XJ2016026), and the Science and Technology Development Plan of Jilin Province, China (Grant Nos. 20190302010GX and 20160520091JH)

• Published in: Chinese physics B Vol. 28; no. 7
• Main Authors: Yin, Yue-Xin, Wu, Zhifa, Sun, Siwen, Tian, Liang, Wang, Xibin, Wu, Yuanda, Zhang, Daming
• Format: Journal Article
• Language: English
• Published: Chinese Physical Society and IOP Publishing Ltd 01.07.2019
• Subjects: dense wavelength division multiplexer (DWDM); multi-functional sensor; optical fiber sensor system; planar lightwave circuit
• ISSN: 1674-1056
• DOI: 10.1088/1674-1056/28/7/074202

We propose a novel and efficient multi-functional optical fiber sensor system based on a dense wavelength division multiplexer (DWDM). This system consists of an optical fiber temperature sensor, an optical fiber strain sensor, and a 48-channel DWDM. This system can monitor temperature and strain changes at the same time. The ranges of these two sensors are from −20 °C to 100 °C and from −1000 μ ε to 2000 μ ε , respectively. The sensitivities of the temperature sensor and strain sensor are 0.03572 nm/°C and 0.03808 nm/N, respectively. With the aid of a broadband source and spectrometer, different kinds and ranges of parameters in the environment can be monitored by using suitable sensors.