Patent ID: 7127181

Claim:
A system for receiving an optical double sideband signal over an optical fiber system, comprising: an optical diplexing filter connected to an optical fiber for receiving an optical double sideband signal and separating the received optical double sideband signal into an upper sideband and a lower sideband; a first photodetector connected to the optical diplexing filter for photodetecting the upper sideband and a first equalizer for adaptively equalizing the upper sideband; a second photo detector connected to the optical diplexing filter for photo detecting the lower sideband and a second equalizer for adaptively equalizing the lower sideband; a combiner connected to the first photodetector and the second photodetector for combining the photodetected upper sideband signal with the photodetected lower sideband signal; and a detector for detecting a bit error rate of the resulting combined signal, the first and second equalizers being responsive to adjust the adaptive equalizing according to the bit error rate.