A Transition Metric in Polar Co-ordinates for MLSE of a Complex Modulated DML

Martí Sales-Llopis; Seb J. Savory

doi:10.1364/OFC.2020.M3J.6

Optical Fiber Communication Conference (OFC) 2020
OSA Technical Digest (Optica Publishing Group, 2020),
paper M3J.6
•https://doi.org/10.1364/OFC.2020.M3J.6

A Transition Metric in Polar Co-ordinates for MLSE of a Complex Modulated DML

Martí Sales-Llopis and Seb J. Savory

Optical Fiber Communication Conference 2020

San Diego, California United States
8–12 March 2020
ISBN: 978-1-943580-71-2

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Short-reach Systems I (M3J)

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M. Sales-Llopis and S. J. Savory, "A Transition Metric in Polar Co-ordinates for MLSE of a Complex Modulated DML," in Optical Fiber Communication Conference (OFC) 2020, OSA Technical Digest (Optica Publishing Group, 2020), paper M3J.6.

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Abstract

We propose a metric for MLSE-Viterbi differential decoding of complex modulation of directly modulated lasers (CM-DML) that reports SNR gains of 1.8 dB at BER=10⁻³ on a simulated PAM4 signal with a typical linewidth enhancement factor α = 4

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