新型光纤温度传感器的信号探测终端研究

An Investigation on a Photoelectricity Detection Terminal of a New Optical Fiber Temperature Sensor(NOTS)

介绍一种以水银包层光波导作为感温探头的新型光纤温度传感器，它采用的测温方法独特新颖，在２０～ １００℃范围的测量精度为 ０．１℃，理论分析的相对测量精度可达０． ０２％。本方案对光电探测终端进行了周密的总体设计，可有效消除测量起始点和外界杂散光的干扰，具有优良的测量重复性，并能实时对采样数据进行计算处理，实现６位数码显示，准确性好，可靠性高。该检测终端同样适用于其他光通信系统中微弱光信号的实时、准确测量。

This paper describes a NOTS with mercury cladding optical fiber as its temperature probe, its measure method is unique. Its absolute precision is 0. 1℃ at the range 20-100 ℃, and the theory relative precision can attain 0. 02%. This scheme give detail design of the photoelectricity detection terminal, the disturbation of outside light can be eliminated effectfully. The measurement repetition is excellent, the real time deta process can be achieved, and displayed by six digital. The veracity is very good, and the reliability is high. This detection terminal can also be used in other optical communication system in detecting the weak optic signal.