SIMPEL: Circuit model for photonic spike processing laser neurons

Bhavin J. Shastri, Mitchell A. Nahmias, Alexander N. Tait, Ben Wu, Paul R. Prucnal

Research output: Contribution to journalArticlepeer-review

38 Scopus citations


We propose an equivalent circuit model for photonic spike processing laser neurons with an embedded saturable absorber-a simulation model for photonic excitable lasers (SIMPEL). We show that by mapping the laser neuron rate equations into a circuit model, SPICE analysis can be used as an efficient and accurate engine for numerical calculations, capable of generalization to a variety of different types of laser neurons with saturable absorber found in literature. The development of this model parallels the Hodgkin-Huxley model of neuron biophysics, a circuit framework which brought efficiency, modularity, and generalizability to the study of neural dynamics. We employ the model to study various signal-processing effects such as excitability with excitatory and inhibitory pulses, binary all-or-nothing response, and bistable dynamics.

Original languageEnglish (US)
Pages (from-to)8029-8044
Number of pages16
JournalOptics Express
Issue number6
StatePublished - Mar 23 2015

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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