Method and apparatus for providing loss equalization and adjustment in a fiber optic network

摘要

Loss equalization is provided in an optical communications network. Included in a optical communications network are a number of optical switches which include various elements for the routing of optical signals. The optical paths through the switches may introduce loss into the signals which causes the strengths of the various signals transmitted over the plurality of lines to be different. Measurements of the optical signals may be taken at both the entry and the exit of the optical switch. Through this measurement, losses through the paths are measured. This information may then be used to adjust the routing devices within the optical switch to equalize the losses occurring along the paths. Measurements may also be taken at various points in the optical network to determine losses introduced by components such as splices or amplifiers. Equalization for these losses can also be made through the routing devices of the optical switch.