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Impact of equalization-enhanced phase noise on digital nonlinearity compensation in high-capacity optical communication systems
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Ding, Jiazheng, Xu, Tianhua, Jin, Cenqin, Wang, Ziyihui, Zhao, Jian and Liu, Tiegen (2020) Impact of equalization-enhanced phase noise on digital nonlinearity compensation in high-capacity optical communication systems. Sensors, 20 (15). 4149. doi:10.3390/s20154149
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WRAP-impact-equalization-enhanced-phase-noise-digital-nonlinearity-compensation-high-capacity-optical-communication-systems-Xu-2020.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (3869Kb) | Preview |
Official URL: http://dx.doi.org/10.3390/s20154149
Abstract
Equalization-enhanced phase noise (EEPN) can severely degrade the performance of long-haul optical fiber transmission systems. In this paper, the impact of EEPN in Nyquist-spaced dual-polarization quadrature phase shift keying (DP-QPSK), dual-polarization 16-ary quadrature amplitude modulation (DP-16QAM), and DP-64QAM optical transmission systems is investigated considering the use of electrical dispersion compensation (EDC) and multi-channel digital backpropagation (MC-DBP). Our results demonstrate that full-field DBP (FF-DBP) is more susceptible to EEPN compared to single-channel and partial-bandwidth DBP. EEPN-induced distortions become more significant with the increase of the local oscillator (LO) laser linewidth, and this results in degradations in bit-error-rates (BERs), achievable information rates (AIRs), and AIR-distance products in optical communication systems. Transmission systems using higher-order modulation formats can enhance information rates and spectral efficiencies, but will be more seriously degraded by EEPN. It is found that degradations on AIRs, for the investigated FF-DBP schemes, in the DP-QPSK, the DP-16QAM, and the DP-64QAM systems are 0.07 Tbit/s, 0.11 Tbit/s, and 0.57 Tbit/s, respectively, due to the EEPN with an LO laser linewidth of 1 MHz. It is also seen that the selection of a higher-quality LO laser can significantly reduce the bandwidth requirement and the computational complexity in the MC-DBP.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||||
| Divisions: | Faculty of Science > Engineering | ||||||
| Library of Congress Subject Headings (LCSH): | Optical fiber communication, Fiber optics, Electric noise | ||||||
| Journal or Publication Title: | Sensors | ||||||
| Publisher: | MDPI AG | ||||||
| ISSN: | 1424-8220 | ||||||
| Official Date: | 26 July 2020 | ||||||
| Dates: |
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| Volume: | 20 | ||||||
| Number: | 15 | ||||||
| Article Number: | 4149 | ||||||
| DOI: | 10.3390/s20154149 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Open Access |
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