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- Title
Enhanced Mitigation of Nonlinearity Signal Distortion by Hybrid Optical Compensation Technique.
- Authors
Kareem, Ali Hayder Abdul; Murdas, Ibrahim A.
- Abstract
This work investigates and proposes a method for mitigating the negative effects of nonlinearities in the fiber with dense wave division multiplexing transmission systems by combining the optical phase conjugation (OPC) approach with a Raman amplifier. The OPC technique uses a polarization diversity loop configuration to suppress the original input signal. As a result, phase conjugated idlers can be generated across a wide frequency range without introducing any spectral inefficiencies due to wavelength shifts. Idle waves are created by mixing four waves in nonlinear fibers with pump waves that are out of band and orthogonally polarized. Finally, the OPC subsystem is put to use in transmission experiments spanning 800 km over dispersion managed fiber spans with lumped amplification by Improved Raman amplifiers to reduce the effects of fiber nonlinearity caused by mid-link spectrum inversion or multiple links. Simulated results of a 50 GHz channel spacing and a 1.792 Tbps made up of eight 224 Gbps polarization division multiplexed (PDM) sixteen ary quadrature amplitude modulation (DP-16QAM) subchannels reveals a Q-factor improvement of up to ~3 dB in mid OPC compared to ~3.37 dB in multiple OPC in the absence of a backward Raman amplifier. In addition, using the OPC would result in an approximate of 10-6 improvement in BER compared to the conventional method. Furthermore, the average enhancement in error vector magnitude (EVM) for the DWDM situation would be larger than 15% with the inclusion of hybrid OPC with backward Raman amplifier.
- Publication
Przeglad Elektrotechniczny, 2023, Vol 2023, Issue 8, p231
- ISSN
0033-2097
- Publication type
Academic Journal
- DOI
10.15199/48.2023.08.41