Frequency-dependent i/q-signal imbalance correction for coherent optical transceivers

摘要: In one embodiment, a coherent optical receiver has digital signal processor that processes or more I/Q-signal pairs to recover data carried by modulated in manner mitigates, based on calibration retrieved from memory appropriate performance measures and feedback mechanisms, the detrimental effects of frequency-dependent imbalances between I Q sub-channels at least I/Q channels receiver. various embodiments, can be generated written into fabrication facility situ while is being operated mode. Alternatively addition, dynamically adjusted online during normal operation