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Digital back-propagation in optical fiber communication systems considering equalization enhanced phase noise

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Ding, Jiazheng, Xu, Tianhua, Wang, Ziyihui, Zhao, Jian, Liu, Tiegen, Zhu, Ning Hua, Hofmann, Werner H. and He, Jian-Jun (2020) Digital back-propagation in optical fiber communication systems considering equalization enhanced phase noise. In: SPIE/COS Photonics Asia, Online, 11-16 Oct. Published in: Proceedings of SPIE - International Society for Optical Engineering, 11545 ISSN 0277-786X. doi:10.1117/12.2575125

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WRAP-digital-back-propagation-optical-fiber-communication-systems-considering-equalization-enhanced-phase-noise-Xu-2020.pdf - Accepted Version - Requires a PDF viewer.

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Official URL: http://dx.doi.org/10.1117/12.2575125

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Abstract

The effect of equalization enhanced phase noise (EEPN) will be introduced in digital signal processing (DSP) based coherent optical communication systems. The EEPN will seriously degrade the transmission performance of a highcapacity optical transmission system. In this work, the influence of EEPN on the performance of dual-polarization 16-ary quadrature amplitude modulation (DP-16QAM) optical transmission system using the electrical dispersion compensation (EDC), the single-channel digital back-propagation (DBP), the partial-bandwidth DBP and the full-field DBP (FF-DBP) were comparatively evaluated with and without considering distortions from the EEPN. Deteriorations on achievable information rates (AIRs) and modulation error ratios (MERs) of optical communication systems due to EEPN have also been assessed. Numerical results indicate that the transmission performance of coherent optical systems can be significantly degraded by the EEPN, especially when FF-DBP is used for the nonlinearity compensation. The larger the linewidth of the local oscillator (LO) laser is, the more serious the degradation caused by EEPN is. This deterioration leads to a decrease in optimal launch powers, AIRs and MERs in the long-haul optical communication systems. In the DP-16QAM transmission system, because of the interference of the EEPN generated by the LO laser with a linewidth of 1 MHz, the degradations on the AIR and MER are 0.15 Tbit/s and 4.15 dB in the case of FF-DBP, respectively. It can also be concluded that, for coherent optical systems with long transmission distances and high symbol rates, the compensation bandwidth and the computational complexity of MC-DBP in the DSP module can be significantly reduced by using narrower-linewidth LO lasers.

Item Type: Conference Item (Paper)
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science > Engineering
Library of Congress Subject Headings (LCSH): Electric noise, Optical fiber communication, Wavelength division multiplexing , Fiber optics, Signal processing -- Digital techniques
Series Name: Semiconductor Lasers and Applications X
Journal or Publication Title: Proceedings of SPIE - International Society for Optical Engineering
Publisher: S P I E - International Society for Optical Engineering
ISSN: 0277-786X
Book Title: Semiconductor Lasers and Applications X
Official Date: 2020
Dates:
DateEvent
2020Published
10 October 2020Available
10 October 2020Accepted
Volume: 11545
Article Number: 115450A
DOI: 10.1117/12.2575125
Status: Peer Reviewed
Publication Status: Published
Publisher Statement: Copyright © 2020 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, and modification of the contents of the publication are prohibited.
Access rights to Published version: Restricted or Subscription Access
Conference Paper Type: Paper
Title of Event: SPIE/COS Photonics Asia
Type of Event: Conference
Location of Event: Online
Date(s) of Event: 11-16 Oct
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