Patent ID: 6907201
Filing Date: 2005-06-14
Classification: H04B

Abstract:
1. An optical device comprising: a plurality of separate optical paths, each of which receiving one or more separate optical signals in a respective band; a plurality of optical power monitors, each of which being configured to measure a respective spectral band power on an associated one of said separate optical paths; and a plurality of idler lasers, each of which being configured to provide a compensating wavelength for injection into an associated one of said optical signal paths downstream from where an associated one of said optical power monitors sense and in response to an associated spectral band power measured by an associated one of said optical power monitors to control optical power transients, wherein each said compensating wavelengths is provided at a power level sufficient for compensating for signal power changes for each respective band on said associated one of said optical signal paths, wherein the power level of each idler laser is controlled according to the respective spectral band power on the associated one of said separate optical paths as measured by the associated one of said optical power monitors.