Patent ID: 6871020
Filing Date: 2005-03-22
Classification: H04B,H04J

Abstract:
1. An apparatus connected to a node in an M-channel wavelength division multiplexed optical communication network, where M is equal to the number of channels operable to be multiplexed on a single fiber, said node adding one of said M channels to said fiber and said apparatus monitoring a power spectrum of N number of channels multiplexed on said fiber and controlling power of said added channel, said apparatus comprising: a power spectrum measurement system connected to said node, said system including a power detection circuit for detecting the power of said N number of channels, and calculating power for each of said N channels and transmitting a signal operable to control the power of said added channel, and a processing circuit connected to said detection circuit, said processing circuit calculating the power of said added channel wherein the calculated power of said added channel is approximately equal to (1−2d)P