Study of burst-mode adaptive equalization for >25G PON applications [Invited]

In anticipation of emerging applications such as business services, 5G, and the Internet of Things, research and standardization are working together towards next-generation 25/50 Gbit/s passive optical network access networks. However, the increase in single-channel line rate is limited by the dist...

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Bibliographic Details
Published in:Journal of optical communications and networking 2020-01, Vol.12 (1), p.A104-A112
Main Authors: Coudyzer, Gertjan, Ossieur, Peter, Breyne, Laurens, La Porta, Antonio, Paredes, Stephan, Bauwelinck, Johan, Yin, Xin
Format: Article
Language:English
Subjects:
High-speed optical techniques
Optical distortion
Optical network units
Optical receivers
Optical transmitters
Passive optical networks
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Summary:In anticipation of emerging applications such as business services, 5G, and the Internet of Things, research and standardization are working together towards next-generation 25/50 Gbit/s passive optical network access networks. However, the increase in single-channel line rate is limited by the distortion introduced by the low-cost device’s bandwidth limit or the chromatic dispersion in the fiber. Burst-mode electronic distortion/dispersion compensation can be used to mitigate these effects, but requires a burst-mode equalizer (BMEQ) for upstream traffic and introduces many challenges. In this invited paper, the feasibility of single-channel, directly modulated upstream 25 Gbit/s non-return-to-zero transmission is investigated in more detail. By using a linear burst-mode transimpedance amplifier together with an offline BMEQ, specific BMEQ penalties and trade-offs such as limited training time and burst-to-burst phase variation are considered.
ISSN:1943-0620
1943-0639
DOI:10.1364/JOCN.12.00A104