基于LabVIEW的光纤线路光功率信号实时采集系统

LabVIEW based real-time acquisition system for optical power signal in optical fiber

摘要: 为实时获取光纤内光功率信号，基于LabVIEW虚拟仪器编程语言，采用USB总线技术，结合光接收机和NI数据采集卡USBM6251构成的硬件平台设计了新型的高速采集系统。该系统克服以往光功率信号采集系统采样率低、单通道显示、界面交互能力弱、便携性差等缺点，实现了采样参数可控的双通道实时采集、显示、保存光功率信号等功能。该系统开发效率高，并通过实验证明其具有良好的人机交互能力，可靠性高，实用性强，能为各类光纤通信系统提供光功率信号监测功能。

Abstract: In order to real-time get optical power signal transmitted in optical fiber，a new high-speed acquisition system is designed.Based on LabVIEW virtual instrument programming language and USB technique, the system combines an optical receiver with an USB DAQ card USB-M6251 of NI Company．It overcomes the disadvantages of the traditional system, such as low sampling rate，single channel display，insufficient man machine interface function and poor portability, and realizes the real-time acquisition，display and storage of optical-power signal in dual channels with sampling parameter controllable.Experiments prove that the optical power signal acquisition system is reliable and practical，and it provides a good man machine interface. It can be used to monitor the optical power signal in various optical fiber communication systems.