基于ROTDR的光纤温度传感时间极限测量
首发时间:2020-01-22
摘要:在分布式光纤温度传感系统中,由于光纤芯子外附的保护材料,如光纤包层、塑料套管、加强钢丝、外护套等,有一定的隔热作用,使得外部环境的温度变化不能被实时传导和测量,从而限制了光纤测温系统的响应时间。本文选用G.652裸纤和带保护层的同型号光纤,搭建了ROTDR(拉曼光时域反射技术)快速测量系统,研究了不同温度变化下的光纤温度响应时间。
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Optical Fiber Temperature Sensing Time Limit Measurement Based on ROTDR
Abstract:In the distributed optical fiber temperature sensing system, the protective materials attached to the optical fiber(optical fiber cladding, plastic sleeve, reinforcing steel wire, outer jacket, etc.) cause heat insulation effect, so that the temperature change of the external environment can not be conducted and measured instantly, which limits the response time of the optical fiber temperature measurement system. In this paper, we choose G.652 bare fiber and the same type of fiber with protective layer to do the research on the temperature response time of fiber under different temperature changes, using a rapid measurement system of ROTDR (Raman optical time domain reflection).
Keywords: Sensing time ROTDR Temperature demodulation
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