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Raman Amplification for Nonlinearity Compensation in a Fiber Optic Link by Optical Phase Conjugation System

    Authors

    • Ali Hayder
    • Ibrahim Abdullah

    Electrical Engineering Department, College of Engineering, University of Babylon

,

Document Type : Research Article

10.63463/kjes1082
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Abstract

This study looks into the use of an optical phase conjugation (OPC) technique in conjunction with a Raman amplifier as a means of reducing the impact of fiber nonlinearities in dense wave division multiplexing (DWDM) transmission systems. The OPC method mutes the input signal by use of a polarization diversity loop arrangement. Since no spectral inefficiencies are introduced by the wavelength changes, phase conjugated idlers can be created throughout a broad frequency range. In nonlinear fibers, idle waves are generated by combining four waves with pump waves that are both out of band and orthogonally polarized. In order to mitigate the negative consequences of fiber nonlinearity due to mid-link spectrum inversion or multiple links, the OPC subsystem is used in transmission experiments spanning 760 km over dispersion-controlled fiber spans with lumped amplification by Improved Raman amplifiers. Using a 50 GHz channel spacing and eight 232 Gbps polarization division multiplexed (PDM) sixteen ary quadrature amplitude modulation (DP-16QAM) subchannels, the simulated results show a Q-factor improvement of up to 3.07 dB in mid OPC compared to 3.39 dB in multiple OPC without a backward Raman amplifier. Furthermore, compared to the reference scenario (conventional), BER would improve by about a factor of 10-6 if the OPC module were used. In addition, (hybrid OPC with backward Raman amplifier) would allow for an average error vector magnitude (EVM) improvement for the DWDM situation of more than 16%.

Keywords

  • OPC
  • Raman amplifier
  • DP-16QAM
  • FWM
  • DWDM
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References
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Kerbala Journal for Engineering Sciences
Volume 3, Issue 2
June 2023
Pages 62-78
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  • Article View: 2,831
  • PDF Download: 490

APA

Hayder, A., & Abdullah, I. (2023). Raman Amplification for Nonlinearity Compensation in a Fiber Optic Link by Optical Phase Conjugation System. Kerbala Journal for Engineering Sciences, 3(2), 62-78. doi: 10.63463/kjes1082

MLA

Ali Hayder; Ibrahim Abdullah. "Raman Amplification for Nonlinearity Compensation in a Fiber Optic Link by Optical Phase Conjugation System". Kerbala Journal for Engineering Sciences, 3, 2, 2023, 62-78. doi: 10.63463/kjes1082

HARVARD

Hayder, A., Abdullah, I. (2023). 'Raman Amplification for Nonlinearity Compensation in a Fiber Optic Link by Optical Phase Conjugation System', Kerbala Journal for Engineering Sciences, 3(2), pp. 62-78. doi: 10.63463/kjes1082

VANCOUVER

Hayder, A., Abdullah, I. Raman Amplification for Nonlinearity Compensation in a Fiber Optic Link by Optical Phase Conjugation System. Kerbala Journal for Engineering Sciences, 2023; 3(2): 62-78. doi: 10.63463/kjes1082

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