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Multilevel modulation at 100 gbaud for short reach C-band links
RISE - Research Institutes of Sweden, ICT, Acreo. KTH Royal Institute of Technology, Sweden.ORCID iD: 0000-0001-9839-7488
RISE - Research Institutes of Sweden, ICT, Acreo. KTH Royal Institute of Technology, Sweden.
RISE - Research Institutes of Sweden, ICT, Acreo.ORCID iD: 0000-0003-3754-0265
KTH Royal Institute of Technology, Sweden.
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2019 (English)In: International Conference on Transparent Optical Networks, IEEE Computer Society , 2019Conference paper, Published paper (Refereed)
Abstract [en]

Datacenters experience an enormous traffic growth due to the vast amount of data to be stored, transmitted and processed [1]-[4]. Technical and economic challenges arise to keep up the bandwidth scalability. Therefore, cost-efficient short reach optical interconnects for 400 GbE intra-datacenter links are critical. Attractive solutions are proposed based on eight optical lanes thanks to compatibility with 100 GbE building blocks, where two optical lanes based 100 GbE solution is already being deployed [4]. Solutions for 400 GbE based on four optical lanes or even two optical lanes using high bandwidth components may be more attractive to reduce cost, power consumption and complexity of parallelism [5], [6]. In this talk, we report on several experimental demonstrations for short reach optical interconnects in C-band. We experimentally evaluate high-speed on-off keying (OOK) and 4-level pulse amplitude modulation (PAM4) and 8-level PAM8 transmitter performance in C-band for short reach optical interconnects. We demonstrate 100 Gbaud PAM4 transmission over 400 meters long standard single mode fiber without optical amplification. We also show results of numerical simulations showing achievable transmission reach in C-band for multilevel modulation at 100 Gbaud over standard single mode fiber with simple decision feedback equalizer. This paves the way for cost-effective short reach optical interconnects with multilevel modulation at 100 Gbaud and higher. 

Place, publisher, year, edition, pages
IEEE Computer Society , 2019.
Keywords [en]
Bandwidth, Cost effectiveness, Decision feedback equalizers, Fiber optic networks, Modulation, Optical interconnects, Optical signal processing, Pulse amplitude modulation, Single mode fibers, Attractive solutions, Bandwidth scalability, Building blockes, Economic challenges, Experimental demonstrations, Multilevel modulation, Optical amplifications, Standard single mode fibers, Transparent optical networks
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-40528DOI: 10.1109/ICTON.2019.8840340Scopus ID: 2-s2.0-85073070060ISBN: 9781728127798 (print)OAI: oai:DiVA.org:ri-40528DiVA, id: diva2:1361957
Conference
21st International Conference on Transparent Optical Networks, ICTON 2019, 9 July 2019 through 13 July 2019
Note

Funding details: Vetenskapsrådet, VR, 2016-04510; Funding details: 752826, 2017-01559; Funding text 1: This work is supported by the Swedish Research Council (VR) projects 2016-04510 “PHASE”, EU H2020 MCSA-IF Project NEWMAN (#752826), and the Vinnova funded Celtic Plus sub-project C2015/3-5 SENDATE-FICUS and Vinnova funded 2017-01559 “Utvecklingscentrum för mjukvarustyrda optiska accessnät”. The Knut and Alice Wallenberg is acknowledged for equipment funding as well as Tektronix and Keysight Technologies for equipment loan.

Available from: 2019-10-17 Created: 2019-10-17 Last updated: 2019-10-17Bibliographically approved

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Ozolins, OskarsUdalcovs, Aleksejs

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