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Wideband Multichannel Nyquist-Spaced Long-Haul Optical Transmission Influenced by Enhanced Equalization Phase Noise
Cenqin Jin1, Nikita A Shevchenko2, Junqiu Wang1
1School of Engineering, University of Warwick, Coventry CV4 7AL, UK.
Sensors (Basel, Switzerland)
|February 11, 2023
Summary
Enhanced equalization phase noise (EEPN) degrades optical fiber system quality. Higher symbol rates and longer distances worsen these distortions, impacting C-band transmission performance.
Area of Science:
- Optical Communications
- Signal Processing
- Photonics
Background:
- Enhanced equalization phase noise (EEPN) significantly impairs optical fiber transmission quality due to uncompensated dispersion.
- EEPN originates from laser phase noises interacting with system dispersion.
Purpose of the Study:
- To investigate the performance impact of EEPN in wideband Nyquist-spaced long-haul nonlinear optical fiber communication systems.
- To evaluate the effectiveness of digital nonlinearity compensation (NLC) and electronic dispersion compensation (EDC) against EEPN.
Main Methods:
- Utilized split-step numerical simulations to model system performance.
- Developed and validated analytical models based on perturbation analysis.
- Considered various symbol rates and modulation formats for comprehensive analysis.
Main Results:
- Analytical models demonstrated high efficiency and accuracy when validated against simulations.
- The study comprehensively analyzed C-band transmission performance.
- Increasing symbol rates and transmission distances were found to exacerbate system distortions.
Conclusions:
- EEPN poses a significant challenge to the quality of long-haul optical fiber communications.
- Digital nonlinearity compensation and electronic dispersion compensation are crucial for mitigating EEPN effects.
- System design must account for the detrimental effects of symbol rate and distance on signal integrity.
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