In this paper intrachannel nonlinearities in a return-to-zero differential-phase-shift-keyed (RZ-DPSK) 40-Gb/s 32x100-km system are compensated in the absence of signal power symmetry using a single LiNbO3 conjugator and results in two decades of improvement in bit-error rate (BER). The reduction of transmission impairments enables the reach of the system to be extended from 5200 to 6400 km with a measured BER = 5 x 10^-4. This paper also presents a first-order perturbation analysis that describes the effects of optical-phase conjugation and dispersion mapping on the optical field of pulses.
© 2005 IEEE
Aref Chowdhury, Gregory Raybon, René-Jean Essiambre, Jeffrey H. Sinsky, Andrew Adamiecki, Juerg Leuthold, Christopher Richard Doerr, and S. Chandrasekhar, "Compensation of Intrachannel Nonlinearities in 40-Gb/s Pseudolinear Systems Using Optical-Phase Conjugation," J. Lightwave Technol. 23, 172- (2005)