All-Optical Purification of Arbitrary Spectral Waveforms via Cross-Phase Modulation Based Spectral Talbot Amplifier

Using cross-phase modulation based spectral Talbot amplifier, we achieve purification and in-band noise mitigation of arbitrary broadband spectral waveforms. The optical signal-to-noise-ratio is improved by 9 dB, enabling recovery of spectral waveforms hidden under noise.