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Carrier recovery techniques for semiconductor laser frequency noise for 28 Gbd DP-16QAM
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Optics and Photonics, OFO. Technical University of Denmark (DTU), Denmark.ORCID iD: 0000-0002-8543-4531
RISE ACREO AB; Technical University of Denmark (DTU).ORCID iD: 0000-0003-4906-1704
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Optics and Photonics, OFO. (FMI FOTONIK O MIKROVÅGSTEKNIK)ORCID iD: 0000-0003-3056-4678
Show others and affiliations
2015 (English)In: Optical Fiber Communication Conference, OFC 2015, IEEE , 2015Conference paper, Published paper (Refereed)
Abstract [en]

We report on the first experimental comparison of DD-PLL, two-stage feed forward, and two variations of extended Kalman filtering for tracking semiconductor laser frequency noise. We identify which carrier phase recovery technique works best depending on the carrier induced frequency noise profile.

Place, publisher, year, edition, pages
IEEE , 2015.
Keyword [en]
Optical communication, Optical fiber communication, Optical fibers, Carrier induced, Carrier phase recovery, Carrier recovery, Experimental comparison, Extended Kalman filtering, Feed forward, Frequency noise, Semiconductor laser frequency, Semiconductor lasers
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-177235ISI: 000370976400162Scopus ID: 2-s2.0-84930921546ISBN: 9781557529374 (print)OAI: oai:DiVA.org:kth-177235DiVA: diva2:873872
Conference
Optical Fiber Communication Conference, OFC 2015, 22 March 2015 through 26 March 2015
Note

QC 20151125

Available from: 2015-11-25 Created: 2015-11-17 Last updated: 2017-11-08Bibliographically approved
In thesis
1. Impairment Mitigation in High Capacity and Cost-efficient Optical Data Links
Open this publication in new window or tab >>Impairment Mitigation in High Capacity and Cost-efficient Optical Data Links
2017 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The work presented in this thesis fits within the broader area of fiber optics communications. This is an important area of research as it provides a breeding ground for the present and future technologies supporting the Internet. Due to the ever-increasing bandwidth demands worldwide, the network infrastructures that make up the Internet are continuously being upgraded. This thesis aims to identify key segments of the Internet that are deemed to become the Internet's bottleneck if new technology does not replace the current one. These are datacenter intra and inter-connects, and metropolitan core area networks. In each category, we provide a comprehensive overview of the state of the art, identify key impairments affecting data transmission, and suggest solutions to overcome them.

 

For datacenter intra and inter-connects, the key impairments are lack of bandwidth from electro-optic devices, and dispersion. Solutions attempting to tackle these impairments must be constrained by cost and power consumption. The provided solution is MultiCAP, an alternative advanced modulation format that is more tolerable to dispersion and provides bandwidth management features, while being flexible enough to sacrifice performance in order to gain simplicity. MultiCAP was the first advanced modulation format to achieve over 100~Gb/s in 2013 for a data-center interconnect and set the world record on data transmission over a single VCSEL in 2014 for a short reach data link. 

 

On metro-core networks, the challenge is to efficiently mitigate carrier induced frequency noise generated by modern semiconductor lasers. We point out that, when such lasers are employed, the commonly used laser linewidth fails to estimate system performance, and we propose an alternative figure of merit we name "Effective Linewidth". We derive this figure of merit analytically, explore it by numerical simulations and experimentally validate our results by transmitting a 28~Gbaud DP-16QAM over an optical link.

Place, publisher, year, edition, pages
Strockholm: KTH Royal Institute of Technology, 2017. 52 p.
Series
TRITA-FYS, ISSN 0280-316X ; 2017:12
Keyword
Phase Noise, Short range interconnects, Metro
National Category
Telecommunications
Research subject
Telecommunication
Identifiers
urn:nbn:se:kth:diva-208101 (URN)978-91-7729-308-8 (ISBN)
Public defence
2017-04-07, Hall B, Electrum, Kistagången 16, Kista, 10:00 (English)
Opponent
Supervisors
Projects
GRIFFON
Funder
EU, FP7, Seventh Framework Programme, 324391
Note

QC 20170602

Available from: 2017-06-02 Created: 2017-06-01 Last updated: 2017-06-02Bibliographically approved

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Olmedo, Miguel IglesiasSchatz, Richard

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