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Study of EEPN mitigation using modified RF pilot and Viterbi-Viterbi based phase noise compensation
RISE, Swedish ICT, Acreo.
RISE, Swedish ICT, Acreo. KTH Royal Institute of Technology, Sweden.
KTH Royal Institute of Technology, Sweden.
Aston University, United Kingdom.
2013 (English)In: Optics Express, E-ISSN 1094-4087, Vol. 21, no 10, p. 12351-12362Article in journal (Refereed) Published
Abstract [en]

We propose - as a modification of the optical (RF) pilot scheme -a balanced phase modulation between two polarizations of the optical signal in order to generate correlated equalization enhanced phase noise (EEPN) contributions in the two polarizations. The method is applicable for n-level PSK system. The EEPN can be compensated, the carrier phase extracted and the nPSK signal regenerated by complex conjugation and multiplication in the receiver. The method is tested by system simulations in a single channel QPSK system at 56 Gb/s system rate. It is found that the conjugation and multiplication scheme in the Rx can mitigate the EEPN to within 1/2 orders of magnitude. Results are compared to using the Viterbi-Viterbi algorithm to mitigate the EEPN. The latter method improves the sensitivity more than two orders of magnitude. Important novel insight into the statistical properties of EEPN is identified and discussed in the paper.

Place, publisher, year, edition, pages
Optical Society of American (OSA) , 2013. Vol. 21, no 10, p. 12351-12362
Keywords [en]
Phase modulation, Polarization, Signal receivers, Viterbi algorithm, Complex conjugations, Equalization enhanced phase noises (EEPN), Optical signals, Orders of magnitude, Phase noise compensations, Single channels, Statistical properties, System simulations, Phase noise, artifact, device failure analysis, devices, equipment design, optical instrumentation, signal noise ratio, signal processing, telecommunication, article, equipment, equipment failure, Artifacts, Equipment Failure Analysis, Optical Devices, Signal Processing, Computer-Assisted, Signal-To-Noise Ratio, Telecommunications
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:ri:diva-48704DOI: 10.1364/OE.21.012351Scopus ID: 2-s2.0-84878587249OAI: oai:DiVA.org:ri-48704DiVA, id: diva2:1468451
Available from: 2020-09-18 Created: 2020-09-18 Last updated: 2022-09-15Bibliographically approved

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