Patent ID: 7231145
Filing Date: 2007-06-12
Classification: H04B,H04J

Abstract:
1. A method of detecting faults in an optical network including a set of network nodes, comprising: taking separate baseline power measurements at a plurality of corresponding predetermined points in each separate one of the nodes of the set of network nodes; storing the baseline power measurements taken at the plurality of predetermined points in each separate one of the nodes of the set of network nodes; taking separate subsequent power measurements at the plurality of predetermined points in each separate one of the nodes of the set of network nodes; and comparing the baseline power measurements stored for the predetermined points in each separate one of the nodes of the set of network nodes with corresponding ones of the subsequent power measurements taken at corresponding ones of the predetermined points, and determining which comparison result indicates a greatest difference between a baseline power measurement and a corresponding subsequent power measurement, wherein baseline power measurements in each separate node vary in correlation with locations of corresponding ones of the predetermined points.