基于温度自补偿的光功率检测系统设计

Design of Optical Power Detection System Based on Temperature Self-compensation

光功率的准确测量对于现代工业生产具有重要意义。光功率测量过程中,多采用光电二极管作为测量传感器。由于光电二极管本身的固有特性,其输出信号易受温度等环境因素干扰,影响系统测量精度。提出一种具有温度自补偿的光功率检测方法,同时测量光信号和当前工作温度,通过所构建温度影响模型,利用温度传感器实时测量当前工作温度,据此对测量结果进行修正,以实现光功率的准确测量。实验表明:该温度自补偿的光功率检测系统能有效消除外界温度干扰,可达到较高的测量精度。

Accurate measurement of optical power is of great significance for modern industrial production.In the process of optical power measurement,photodiode is mostly used as the measurement sensor.Due to the inherent reasons of photodiode,its output signal is vulnerable to temperature and other environmental factors,which affects the measurement accuracy of the system.This paper proposes a new optical power detection method with temperature self-compensation,which measures the optical signal and the current operating temperature,measures the current operating temperature using the temperature sensor,and corrects the measurement results to realize the accurate measurement of the optical power.The experiment shows that the self-compensated optical power detection system effectively eliminates the external temperature interference and high measurement accuracy can be achieved.