Demonstration of non-intrusive in-band OSNR measurement technique for PM-16QAM signals with spectral shaping and subject to fiber nonlinearity

摘要

A non-intrusive in-band OSNR measurement method is experimentally investigated on polarization-multiplexed signals, including spectrally-shaped PM-16QAM, at OSNR levels beyond 25dB and under strong nonlinear conditions. OSNR measurement statistics demonstrate sufficient accuracy for practical network applications.