In this paper,we report on the performance comparison of all-optical signal processing methodologies to compensate fiber transmission impairments,namely chromatic dispersion and nonlinear distortion caused by the Ker...In this paper,we report on the performance comparison of all-optical signal processing methodologies to compensate fiber transmission impairments,namely chromatic dispersion and nonlinear distortion caused by the Kerr effect,in a coherent 112 Gbit∕s dual-polarization 64 bit quadrature amplitude modulation system over 800 km standard single-mode fiber.We numerically compare optical backward propagation(OBP)with optical phase conjugation(OPC)techniques,namely.mid-link spectral inversion,predispersed spectral inversion,and OPC with nonlinearity module.We also evaluate a self-phase-modulation-based optical limiter with an appropriate prechirping to compensate for the intensity fluctuations as a hybrid approach with OBP.The results depict improvement in system performance by a factor of∼4 dB of signal input power by all-optical signal processing methods,which is comparative with ideal digital backward propagation where the high complexity is the intrinsic impediment in the real-time implementation of the technique with coherent receivers.展开更多
文摘In this paper,we report on the performance comparison of all-optical signal processing methodologies to compensate fiber transmission impairments,namely chromatic dispersion and nonlinear distortion caused by the Kerr effect,in a coherent 112 Gbit∕s dual-polarization 64 bit quadrature amplitude modulation system over 800 km standard single-mode fiber.We numerically compare optical backward propagation(OBP)with optical phase conjugation(OPC)techniques,namely.mid-link spectral inversion,predispersed spectral inversion,and OPC with nonlinearity module.We also evaluate a self-phase-modulation-based optical limiter with an appropriate prechirping to compensate for the intensity fluctuations as a hybrid approach with OBP.The results depict improvement in system performance by a factor of∼4 dB of signal input power by all-optical signal processing methods,which is comparative with ideal digital backward propagation where the high complexity is the intrinsic impediment in the real-time implementation of the technique with coherent receivers.
