Abstract

Semiconductor lasers (SLs) with delayed optical feedback and external optical injection have been demonstrated as photonic reservoir computers. Here, we use the time delay-based reservoir computing approach (TDRC) to compare two different encoding schemes at the input of the reservoir, by encoding the information in either the phase or the amplitude of the electric field. For the nonlinear Santa Fe time series prediction task and under optimized operating conditions, we experimentally show an improvement of the performance when considering phase encoding.

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