公开(公告)号：US09083456B2

公开(公告)日：2015-07-14

申请号：US13693594

申请日：2012-12-04

Applicant: ADVA Optical Networking SE

Inventor： David Fox ,  Lawrence T. Dillard, III ,  Neil Grayson

IPC: H04B10/08 ,  H04B17/00 ,  H04B10/07 ,  H04B10/075

CPC classification number: H04B10/07 ,  H04B10/0705 ,  H04B10/075

Abstract: A monitoring apparatus for detecting uncharacteristic short-term power level changes of an optical signal transmitted through an optical fiber, said monitoring apparatus comprising a power level variance calculation unit adapted to calculate a power level variance on the basis of a long-term power level and a current power level of said optical signal and a short-term variance filter adapted to filter transient changes indicated by the calculated power level variance and to generate a trouble occurrence indication indicating an uncharacteristic short-term power level change, if the filtered power level variance exceeds a predetermined power level variance.

Abstract translation: 一种用于检测通过光纤传输的光信号的非特性短期功率电平变化的监视装置，所述监视装置包括：功率电平方差计算单元，用于根据长期功率电平计算功率电平方差;以及 所述光信号的当前功率电平和适用于过滤由所计算的功率电平变化指示的瞬态变化的短期方差滤波器，并且如果滤波后的功率电平方差，则产生指示非特性短期功率电平变化的故障发生指示 超过预定的功率电平差异。