Optical DPSK with generalized phase noise model and narrowband reception

The performance of a narrowband differential phase shift keying (DPSK) receiver is analyzed in the case where the phase of the received signal is impaired by laser phase noise. This receiver is commonly used for the reception of DPSK modulated signals corrupted by additive white Gaussian noise. The effects of both additive and phase noises are fully taken into account. A general phase noise model is employed, which includes the Brownian motion model as a special case. This treatment enables a performance evaluation under feedback control of frequency noise. Numerical results indicate a superior performance, due to both the narrowband nature of the receiver and the phase noise stabilization mechanism.