激光与光电子学进展, 2016, 53 (8): 080604, 网络出版: 2016-08-11
基于π移相光纤布拉格光栅的高精度温度测量 下载: 576次
High Precision Temperature Measurement Based on π-Phase-Shifted Fiber Bragg Grating
光纤光学 π移相光纤布拉格光栅 温度测量 单光子 光热效应 fiber optics π-phase-shifted fiber Bragg grating temperature measurement single photon photothermal effect
摘要
光热效应会引起π移相光纤布拉格光栅的频率起伏,故将入射激光衰减至单光子量级,以消除光热效应的影响。通过对入射单光子信号进行强度调制,使用锁相放大器直接解调光电转换的晶体管晶体管逻辑电平(TTL)信号,利用π移相光纤布拉格光栅对环境温度进行测量,温度测量精度达到0.14 ℃。
Abstract
The photothermal effect can induce the frequency fluctuations of π-phase-shifted fiber Bragg grating (PSFBG), so the incident laser is attenuated to the single photon level in order to eliminate the photothermal effect. The intensity of the incident single photon is modulated, and then the transistor-transistor logics (TTL) signal pulses of photoelectric conversion are directly demodulated with the lock-in amplifier. Thereby the environmental temperature is measured by using the PSFBG. The precision for temperature measurement is up to 0.14 ℃.
于波, 景明勇, 胡建勇, 张国峰, 肖连团, 贾锁堂. 基于π移相光纤布拉格光栅的高精度温度测量[J]. 激光与光电子学进展, 2016, 53(8): 080604. Yu Bo, Jing Mingyong, Hu Jianyong, Zhang Guofeng, Xiao Liantuan, Jia Suotang. High Precision Temperature Measurement Based on π-Phase-Shifted Fiber Bragg Grating[J]. Laser & Optoelectronics Progress, 2016, 53(8): 080604.