光纤衰减测试系统的研究

A Bifrequency System Used for Detecting Optical Fiber Loss

在光纤通信中，光纤衰减是光纤质量的一项重要指标，通常需要测试光纤在某一较宽频段内各个波长的光纤衰减值，以选择合适的光源工作波长。笔者设计了一种新颖的双频检测光电系统，并采用单片机进行数据采集和处理。

Optical fiber loss is an important index of optical fiber quality in commuication. Under noraml conditions, We need to determine the optical loss value of each wave length in a wide spertrum for selecting the most suitable wavelength of light source. A bifrequency photoelectronic system is proposed in this paper, in which an 8 bit microcontroller is used for collecting and processing data.