二维光编解码链路监测系统环境温度补偿算法研究

为解决二维光编解码接入网链路监测系统中反射光脉冲信号随温度变化的问题,提出了一种温度补偿算法。动态分析了检索脉冲光信号与二维光编码器互作用过程,推导得出编码光纤光栅中心波长温度漂移与反射光信号波形表达式,确定了补偿系数,给出其随温度变化的动态关系。搭建了实验系统,获得编码光纤光栅中心波长随温度变化系数为0.00932 nm/℃,通过温度补偿的系统可在-30~80℃环境正常工作,实现光纤链路状态精准判决。

Research on Ambient Temperature Compensation Algorithm for 2D Optical Codec Link Monitoring System

In order to solve the problem of temperature variation of reflected light pulse signal in two-dimensional optical codec access network link monitoring system,a temperature compensation algorithm is proposed.The interaction process between the retrieved pulsed optical signal and the two-dimensional optical encoder is analyzed dynamically.The waveform expression of the center wavelength of the coded fiber grating and the reflected light signal are derived.The compensation coefficient is determined.Furthermore,the dynamic relationship of the compensation coefficient with temperature is derived.An experimental system is built to obtain a central wavelength of the coded fiber grating with a temperature variation coefficient of 0.00932 nm/℃.The system with temperature compensation can work normally at-30℃~80℃,and achieve accurate judgment of the fiber link state.