Chinese Optics Letters, 2018, 16 (7): 070603, Published Online: Jul. 19, 2018
Low-noise and highly stable optical fiber temperature sensor using modified pulse-reference-based compensation technique Download: 623次
Abstract
We modify the pulse-reference-based compensation technique and propose a low-noise and highly stable optical fiber temperature sensor based on a zinc telluride film-coated fiber tip. The system noise is measured to be 0.0005 dB, which makes it possible for the detection of the minor reflectivity change of the film at different temperatures. The temperature sensitivity is 0.0034 dB/°C, so the resolution can achieve 0.2°C. The maximum difference of the temperature output values of the sensor at 20°C at different points in time is 0.39°C. The low cost, ultra-small size, high stability, and good repeatability of the sensor make it a promising temperature sensing device for practical application.
Qiang Bian, Zhangqi Song, Dongyu Song, Xueliang Zhang, Bingsheng Li, Zhou Meng, Yang Yu. Low-noise and highly stable optical fiber temperature sensor using modified pulse-reference-based compensation technique[J]. Chinese Optics Letters, 2018, 16(7): 070603.