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Receiver implemented RF pilot tone phase noise mitigation in coherent optical nPSK and nQAM systems

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Jacobsen, Gunnar, Xu, Tianhua, Popov, Sergei, Li, Jie, Friberg, Ari T. and Zhang, Yimo (2011) Receiver implemented RF pilot tone phase noise mitigation in coherent optical nPSK and nQAM systems. Optics Express, 19 (15). pp. 14487-14494. doi:10.1364/OE.19.014487

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Official URL: http://dx.doi.org/10.1364/OE.19.014487

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Abstract

In this paper, a novel method for extracting an RF pilot carrier signal in the coherent receiver is presented. The RF carrier is used to mitigate the phase noise influence in n-level PSK and QAM systems. The performance is compared to the use of an (ideal) optically transmitted RF pilot tone. As expected an electronically generated RF carrier provides less efficient phase noise mitigation than the optical RF. However, the electronically generated RF carrier still improves the phase noise tolerance by about one order of magnitude in bit error rate (BER) compared to using no RF pilot tone. It is also found, as a novel study result, that equalization enhanced phase noise - which appears as correlated pure phase noise, amplitude noise and time jitter - cannot be efficiently mitigated by the use of an (optically or electrically generated) RF pilot tone.

Item Type: Journal Article
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science > Engineering
Library of Congress Subject Headings (LCSH): Phase shift keying, Amplitude modulation, Optical fiber communication
Journal or Publication Title: Optics Express
Publisher: Optical Society of America
ISSN: 1094-4087
Official Date: 2011
Dates:
DateEvent
2011Published
Volume: 19
Number: 15
Page Range: pp. 14487-14494
DOI: 10.1364/OE.19.014487
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access

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