Based on the advanced high-frequency pulse laser technique, fiber Raman spectrum technique, WDM (Wavelength Division Multiplexing) technique, optical time domain reflection technique, high-frequency signal collection technique and weak signal processing technique, it realizes the real-time temperature monitoring of each long-distance deployment fiber point. This system is capable of working in the various environmental extremes and continuous space temperature measurement via in-site special fibers or cables sensing temperature with high-voltage, strong corrosion nuclear radiation and strong electromagnetic interference characteristics. And it is applicable to dam concrete panels, mass concrete and various continuous space temperature measurement needs, oil, electric power, chemical industry and other environments.

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