Packet Timescale Wavelength Switching Enabled by Regression Optimisation

A linear regression algorithm is applied to a digital-supermode distributed Bragg reflector laser to optimise wavelength switching times. The algorithm uses the output of a digital coherent receiver as feedback to update the pre-emphasis weights applied to the laser section currents. This permits in...

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Bibliographic Details
Published in:arXiv.org 2020-03
Main Authors: Thomas, Gerard, Dzieciol, Hubert, Benjamin, Joshua, Clark, Kari, Williams, Hugh, Thomsen, Benn, Lavery, Domaniç, Bayvel, Polina
Format: Article
Language:English
Subjects:
Algorithms
Channels
Lasers
Optimization
Switching
Technological planning
Online Access:Get full text
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Summary:A linear regression algorithm is applied to a digital-supermode distributed Bragg reflector laser to optimise wavelength switching times. The algorithm uses the output of a digital coherent receiver as feedback to update the pre-emphasis weights applied to the laser section currents. This permits in-situ calculation without manual weight adjustments. The application of this optimiser to a representative subsection of channels indicates this commercially available laser can rapidly reconfigure over 6.05 THz, supporting 122 channels, in less than 10 ns.
ISSN:2331-8422
DOI:10.48550/arxiv.2002.11640