Frequency dependent impairment degrades the transmission performance but its accurate calibration is still challenging due to the complex polarization. Dai, Zhang and colleagues report a calibration method able to simultaneously calibrate various frequency-dependent impairments in coherent optical transceivers, with a measured bit error rate improvement from 1.61e^-1 to 4.41e^-2 after calibration.
- Longquan Dai
- Ziheng Zhang
- Lei Deng
