Impacts of differential phase noise caused by amplitude inequality and nonlinearity in optical M-DAPSK systems

Differential phase shift induced by amplitude inequality of M-DAPSK modulation and fibre nonlinearity is evaluated. It constitutes a kind of phase noise to DPSK signal and degrades the signal quality to DPSK path. Finally the amplitude ratio is optimized for 40 Gbit/s M-DPSK systems with different i...

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Hauptverfasser:	Aiying Yang, Maotong Liu, Yunan Sun
Format:	Tagungsbericht
Sprache:	eng
Schlagworte:	Amplitude modulation Amplitude shift keying Degradation Differential quadrature phase shift keying Optical modulation Optical noise Optical receivers Optical signal processing Phase modulation Phase noise
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Zusammenfassung:	Differential phase shift induced by amplitude inequality of M-DAPSK modulation and fibre nonlinearity is evaluated. It constitutes a kind of phase noise to DPSK signal and degrades the signal quality to DPSK path. Finally the amplitude ratio is optimized for 40 Gbit/s M-DPSK systems with different input peak power.
DOI:	10.1109/CLEOPR.2007.4391443