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Fiber nonlinearity or what know as (Kerr effects) has become a major limiting transmission impairment factor and channel capacity of high-speed optical communication systems. The nonlinearity compensation system for the Dense Wave Division Multiplexing (DWDM) transmission system has been investigated in this paper using a new technique based on Optical Phase Conjugation (OPC) module. OPC is implemented by using an all-optical parametric amplifier based high nonlinear fiber-optical phase conjugation. This technology is used as part of an effort to increase the performance of 864 Gb/s of L-band eight channels 50 GHz spaced DWDM of dual polarization amplitude shift keying signaling using mid and multiple OPC. This paper focuses on developing the conventional optical phase conjugation method using hybrid OPC with a Raman pump amplifier and comparing the performance of the system in multi …