【作者】 张昕明； 叶红安； 朱勇；

【Author】 Zhang Xinming Ye Hongan Zhu Yong (College of Electronic Engineering Heilongjiang University Harbin 150080 China)

【机构】 黑龙江大学 电子工程学院；

【摘要】 介绍了一种采用多控制器设计的高精度数字光功率计设计的硬件结构和软件流程,给出了其标定方法和实测性能指标。该光功率计采用InGaAs材料的光电探测器实现光电信号转换,满足了光功率计对波长范围和测量精度的要求;采用高性能运放0PA27和16位的A/D转换芯片AD7705以保证测量精度;选用高速嵌入式单片机来控制信号的检测、处理以及数据的显示,在确保运算速度的同时使光功率计具有多波段响应、量程自动转换、测量灵敏度高的特点。实测的性能指标表明该光功率计达到了设计要求,测量精度优于0.05dB。在光检测、光通信等领域具有广泛的应用前景。更多还原

【Abstract】 Based on multi-controllers,a hardware structure and software flow for a high-precision digital optical power meter are described,and a method of calibration of this instrument and its measured performance are presented.A detector made from InGaAs is chosen to realize the conversion from optical to electrical for achieving the measurement precision in the wavelength range.A high precision operational amplifier OPA27 and a 16 bit ADC chip AD7705 are used to achieve high measuring accuracy.This optical power meter uses the high speed embedded single chip to control data detection,processing,and display.This structure has features of response in multi-wave band,automatic switching of measurement range,high measuring precision.Experimental data show this design is up to the requirement,the measuring precision surpasses 0.05dB.It can be widely used in the field of optical detection and optical communication.更多还原