Simultaneously Calibration of Tx/Rx Frequency Response and IQ Skew for Coherent Optical Transceiver

Longquan Dai, Hongyu Li, Mengfan Cheng, Qi Yang, Ming Tang, Deming Liu, Lei Deng

Abstract: We report a calibration method that can simultaneously characterize frequency-response and IQ-skew of coherent optical transceivers with laser frequency offset and phase noise. 50/40GBaud Nyquist-16/64QAM signals transmission is achieved using 22GHz commercial coherent optical transceiver.