Dynamic gain equalization system design with adaptive spectrum decomposition methodology

An optical gain equalization system for receiving and equalizing a multiple-channel input optical signal comprising:

• a spectrum analyzing means for dynamically analyzing said multi-channel input optical signal for generating a set of signal spectral data;
• an adaptive signal decomposing means for employing said set of signal spectral data for adaptively decomposing said multi-channel input optical signal into decomposed sub-signals and a residual signal;
• and
• an adaptive equalization means for employing said set of signal spectral data for dynamically equalizing said sub-signals to generate equalized sub-signals.

A method for receiving and equalizing a multiple-channel input optical signal comprising:

• dynamically analyzing said multi-channel input optical signal for generating a set of signal spectral data;
• employing said set of signal spectral data for adaptively decomposing said multi-channel input optical signal into decomposed sub-signals and a residual signal;
• and
• employing said set of signal spectral data for dynamically equalizing said sub-signals to generate equalized sub-signals.

A method for receiving and equalizing a multi-channel input optical signal comprising:

• receiving said multi-channel input optical signal into a cascaded array of tunable optical filters for filtering and generating a plurality of sub-signals and a residual signal and each of said sub-signals transmitted over a mutually exclusive filter-specific spectrum-range while a combination of all said filter-specific spectrums dynamically covering a spectral portion of said multi-channel input optical signal for power equalization with all of said filter-specific spectrums together with a spectral range of said residual signal substantially covering an entire spectral range of said multi-channel input optical signal;
• receiving each of said sub-signals into a corresponding array of variable optical attenuators (VOAs) for attenuating said sub-signal transmitted over said filter-specific spectrum range for generating an equalized sub-signal;
• and
• receiving said sub-signals into a multiplexing means for multiplexing said equalized sub-signals generated by said array of variable optical attenuators (VOAs) for generating an equalized output optical signal.