Kernel Affine Projection for Nonlinearity Tolerant Optical Short Reach Systems
Journal article, 2020

Nonlinearity is one of the key issues that hinder the development of high-capacity optical short reach systems. This paper proposes three variants of kernel affine projection (KAP) algorithms, all of which combine kernel mapping and affine projection in a reproducing kernel Hilbert space for compensating nonlinear impairments in optical short reach systems. An intensity modulation/direct detection system with a single digital-to-analogue converter, a packaged externally modulated laser and a packaged InP photo-detector is used for experimental demonstration, achieving 238-Gbps (net rate 222-Gbps). Experimental results show that the KAP algorithms can mitigate nonlinear impairments in short-reach communications while maintaining low complexity in reproducing kernel Hilbert space.


optical fiber communication

communication system nonlinearities


Lu Zhang

Zhejiang University

Zhejiang Lab

Jiajia Chen

Chalmers, Electrical Engineering, Communication and Antenna Systems, Optical Networks

Aleksejs Udalcovs

RISE Research Institutes of Sweden

Xiaodan Pang

Royal Institute of Technology (KTH)


Richard Schatz

Royal Institute of Technology (KTH)

Urban Westergren

Royal Institute of Technology (KTH)

Sergei Popov

Royal Institute of Technology (KTH)

Shilin Xiao

Shanghai Jiao Tong University

Oskars Ozolins

Royal Institute of Technology (KTH)

RISE Research Institutes of Sweden

IEEE Transactions on Communications

0090-6778 (ISSN)

Vol. 68 10 6403-6412 9134945

Subject Categories

Control Engineering

Signal Processing

Computer Science



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