基于小波变换和最小二乘法的光纤衰减特性分析

Analysis of fiber attenuation performance based on wavelet and least square estimation

光纤衰减特性是光纤的一个重要性能指标 ,随着光纤通信的发展 ,迫切需要发展一种对光纤衰减特性进行自动化分析的设备。目前市场上常见的测光纤衰减特性的仪器是OTDR卡 ,但OTDR卡仅提供了各采样点处的衰减值 ,并不能对测试数据进行自动化分析。基于OTDR卡的测试数据 ,利用小波变换、最小二乘法等数学工具提出了一种光纤衰减特性自动化分析的算法。与同类产品相比 ,该算法精度较高。

Fiber's attenuation performance is an important characteristic to fiber. With the development of fiber communication, one device which is used to automatically analyze the fiber's attenuation performance is necessary. OTDR card is one common device that is used to test the fiber's attenuation performance. But it only provide the attenuation value of every sample point, and can't automatically analyze the testing data. One method to automatically analyze the fiber's attenuation performance by using wavelet and least square estimation is introduced. Comparing with the others, the method's precision is much better.