中国激光, 2011, 38 (9): 0905004, 网络出版: 2011-08-19
基于腔衰荡光谱技术的光纤微腔温度传感器
Temperature Sensor of Fiber Micro-Cavity Based on Cavity Ring-Down Spectroscopy Technology
光纤光学 腔衰荡光谱技术 光纤微腔 温度传感 fiber optics cavity ring-down spectroscopy technology fiber micro-cavity temperature sensing
摘要
提出并实现了一种基于腔衰荡光谱(CRDS)技术的光纤微腔温度传感器。利用高频CO2激光脉冲技术在1060 nm单模光纤上直接刻蚀光学微腔,将其作为传感单元接入到光纤环谐振腔中,通过测量脉冲激光衰荡时间实现了温度传感。在24 ℃~93 ℃温度范围内,光纤微腔温度传感器灵敏度达到83.36 ns/℃,实验测量结果具有良好的线性度。
Abstract
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 ℃~93 ℃, the sensitivity of the temperature sensor is up to 83.36 ns/℃. Experimental results show good linearity.
尚佳彬, 张伟刚, 魏石磊. 基于腔衰荡光谱技术的光纤微腔温度传感器[J]. 中国激光, 2011, 38(9): 0905004. Shang Jiabin, Zhang Weigang, Wei Shilei. Temperature Sensor of Fiber Micro-Cavity Based on Cavity Ring-Down Spectroscopy Technology[J]. Chinese Journal of Lasers, 2011, 38(9): 0905004.