Temperature sensor of fiber micro-cavity based on cavity ring-down spectroscopy technology

被引：2
作者：
Shang J. [1 ]
Zhang W. [1 ]
Wei S. [1 ]
机构：
[1] Key Laboratory of Opto-Electronic Information Science and Technology, Institute of Modern Optics, Nankai University
来源：
Zhongguo Jiguang/Chinese Journal of Lasers | 2011年 / 38卷 / 09期
关键词：
Cavity ring-down spectroscopy technology; Fiber micro-cavity; Fiber optics; Temperature sensing;
D O I：
10.3788/CJL201138.0905004
中图分类号：
学科分类号：
摘要：
A temperature sensor of fiber micro-cavity based on the cavity ring-down spectroscopy (CRDS) technology is proposed and implemented. The micro-cavity on single mode 1060 nm fibers is achieved by direct writing with high-frequency CO2 laser pulses. As a sensor unit, the fiber micro-cavity is accessed to the fiber-loop resonator. Temperature sensing is realized by measuring the ring-down time of the pulsed laser. In the temperature range of 24°C~93°C, the sensitivity of the temperature sensor is up to 83.36 ns/°C. Experimental results show good linearity.
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