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Phase noise cancellation in coherent communication systems using a radio frequency pilot tone

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Xu, Tianhua, Jin, Cenqin, Zhang, Shuqing, Jacobsen, Gunnar, Popov, Sergei, Leeson, Mark S. and Liu, Tiegen (2019) Phase noise cancellation in coherent communication systems using a radio frequency pilot tone. Applied Sciences, 9 (21). 4717. doi:10.3390/app9214717 ISSN 2076-3417.

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Official URL: http://dx.doi.org/10.3390/app9214717

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Abstract

Long-haul optical fiber communication employing digital signal processing (DSP)-based dispersion compensation can be distorted by the phenomenon of equalization-enhanced phase noise (EEPN), due to the reciprocities between the dispersion compensation unit and the local oscillator (LO) laser phase noise (LPN). The impact of EEPN scales increases with the increase of the fiber dispersion, laser linewidths, symbol rates, signal bandwidths, and the order of modulation formats. In this work, the phase noise cancellation (PNC) employing a radio frequency (RF) pilot tone in coherent optical transmission systems has been investigated. A 28-Gsym/s QPSK optical transmission system with a significant EEPN has been implemented, where the carrier phase recovery (CPR) was realized using the one-tap normalized least-mean-square (NLMS) estimation and the differential phase detection (DPD), respectively. It is shown that the RF pilot tone can entirely eliminate the LPN and efficiently suppress the EEPN when it is applied prior to the CPR.

Item Type: Journal Article
Subjects: T Technology > TD Environmental technology. Sanitary engineering
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science, Engineering and Medicine > Engineering > Engineering
Library of Congress Subject Headings (LCSH): Optical fiber communication , Noise control, Radio frequency
Journal or Publication Title: Applied Sciences
Publisher: MDPI
ISSN: 2076-3417
Official Date: 5 November 2019
Dates:
DateEvent
5 November 2019Published
3 November 2019Accepted
Volume: 9
Number: 21
Article Number: 4717
DOI: 10.3390/app9214717
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 7 November 2019
Date of first compliant Open Access: 12 November 2019
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
RISE Grant DAWN4IoE (778305) [ERC] Horizon 2020 Framework Programmehttp://dx.doi.org/10.13039/100010661
TRANSNET (EP/R035342/1)[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266

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