GFF制作过程中的EF指标监测的实现

Implementation of EF monitoring system in GFF manufacture

插入损耗误差函数(Error Function,EF)指标是增益平坦滤波器(Gain Flattening Filter,GFF)的关键指标,如何实时监测EF是GFF制作过程中必须解决的问题。文中介绍的EF指标实时监测系统,是通过通用接口总线(General Purpose InterfaceBus,GPIB)构建的,它利用计算机编程技术从光谱分析仪中获取数据并进行分析处理,能够实时绘制带容限的GFF插入损耗曲线,监测EF指标。

As insertion loss Error Function （EF） is the key parameter for the Gain Flatting Filter （GFF）, the real-time EF monitoring is vital for manufacturing GFF. The real-time EF monitoring system in this article is realized via General Purpose Interface Bus （GPIB） interface and the data is obtained from the spectrum analyzer and analyzed and processed by computer programming, which makes it possible to plot in real time the loss vs. wavelength curve with tolerance and monitor the EF.