Abstract
The performance of DPSK systems was shown to be limited by the phase noise, which is nonlinearly enhanced by the Kerr effect [1]. One of the approaches that have been proposed for reducing the nonlinear phase noise accumulation is to use the optical phase conjugation (OPC) [2]. Recent experiment demonstrated the 44-% increase in transmission distance when the OPC is used instead of the periodic dispersion compensation in 44×l0-Gbit/s DPSK transmission [2]. In this paper, the nonlinear phase noise accumulation in OPC system is theoretically analyzed. Then, the comparison between the performance of the OPC system and the dispersion-compensated (DC) system is made.
© 2007 IEEE
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