Polarization insensitive all-optical carrier recovery scheme from BPSK data is proposed and demonstrated in experiment
for the first time. The proposed scheme uses a degenerate optical parametric oscillator built with phase sensitive
A scheme for wavelength and polarization insensitive all-optical clock extraction and enhancement of nonreturn-to-zero (NRZ) data is proposed and demonstrated. At 10 Gbit/s, more than 7-dB clock enhancement and 19-dB clock-to-data suppression ratio (CDSR) enhancement have been realized using a semiconductor optical amplifier (SOA) and a reflective fiber Bragg grating (FBG) over a 30-nm input wavelength range.