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Digital signal processing approaches for semiconductor phase noise tolerant coherent transmission systems
KTH Royal Institute of Technology, Sweden; DTU Technical University of Denmark, Denmark.
RISE, Swedish ICT, Acreo.
KTH Royal Institute of Technology, Sweden.
DTU Technical University of Denmark, Denmark.
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2015 (English)In: Optical Metro Networks and Short-Haul Systems VII / [ed] Atul K. Srivastava, Benjamin B. Dingel, Achyut K. Dutta, 2015, Vol. 9388, article id 93880AConference paper, Published paper (Refereed)
Abstract [en]

We discuss about digital signal processing approaches that can enable coherent links based on semiconductor lasers. A state-of-the art analysis on different carrier-phase recovery (CPR) techniques is presented. We show that these techniques are based on the assumption of lorentzian linewidth, which does not hold for monolithically integrated semiconductor lasers. We investigate the impact of such lineshape on both 3 and 20 dB linewidth and experimentally conduct a systematic study for 56-GBaud DP-QPSK and 28-GBaud DP-16QAM systems using a decision directed phase look loop algorithm. We show how carrier induced frequency noise has no impact on linewidth but a significant impact on system performance; which rises the question on whether 3-dB linewidth should be used as performance estimator for semiconductor lasers.

Place, publisher, year, edition, pages
2015. Vol. 9388, article id 93880A
Series
Proceedings of SPIE, ISSN 0277-786X, E-ISSN 1996-756X ; 9388
Keywords [en]
Coherent communications, Optical communications, Phase noise, Digital signal processing, Frequency estimation, Linewidth, Metropolitan area networks, Monolithic integrated circuits, Optical communication, Signal processing, Carrier phase recovery, Coherent communication, Coherent transmission systems, Decision-directed, Monolithically integrated, Performance estimator, Semiconductor phase, Systematic study, Semiconductor lasers
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-35476DOI: 10.1117/12.2078408Scopus ID: 2-s2.0-84923917428ISBN: 9781628414783 (print)OAI: oai:DiVA.org:ri-35476DiVA, id: diva2:1259132
Conference
SPIE OPTO 2015, February 7-12, 2015, San Francisco, US
Note

Conference code: 110993; Export Date: 22 October 2018; Conference Paper; CODEN: PSISD; Correspondence Address: Iglesias Olmedo, M.; Optics Division, Royal Institute of Technology (KTH), Electrum 229, Sweden

Available from: 2018-10-27 Created: 2018-10-27 Last updated: 2019-07-10Bibliographically approved

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CiteExportLink to record
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