Influence of the input signal’s phase modulation on the performance of optical delay-based reservoir computing using semiconductor lasers

Research output: Contribution to journalArticle

Abstract

In photonic reservoir computing, semiconductor lasers with delayed feedback have shown to be suited to efficiently solve difficult and time-consuming problems. The input data in this system is often optically injected into the reservoir. Based on numerical simulations, we show that the performance depends heavily on the way that information is encoded in this optical injection signal. In our simulations we compare different input configurations consisting of Mach-Zehnder modulators and phase modulators for injecting the signal. We observe far better performance on a one-step ahead time-series prediction task when modulating the phase of the injected signal rather than only modulating its amplitude.
Original languageEnglish
Article numberOE.449508
Pages (from-to)13434-13446
Number of pages13
JournalOpt. Express
Volume30
Issue number8
DOIs
Publication statusPublished - 11 Apr 2022

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