The Flexible Optical Links with Dispersion Management and Optical Phase Conjugation

It is required to suppress or mitigate the optical signal distortion due to group velocity dispersion and optical Kerr effects in ultra-high speed and long-haul transmission systems. Dispersion management (DM), optical phase conjugation (OPC), and the combination of these two are promising techniques to compensate for the signal distortion. The goal of this paper is to investigate the possibility of the non-uniform distribution of residual dispersion per span (RDPS) or single mode fiber (SMF) length of the fiber spans in the optical links with DM and the OPC for implementing the flexible optical network configuration. We confirm that the random distribution of RDPS or the SMF length among the non-uniform distributions is the most suitable DM scheme for implementing the flexible optical link configuration, because the effective net residual dispersion (NRD) range of the conventional(uniform) distribution and the random distributions are not significantly different.