We developed an asynchronous spiking photonic neuron that forms the basic building block for hybrid analog/digital lightwave neuromorphic processing. Our approach enables completely asynchronous spiking in response to input signals while maximizing the throughput relative to synchronous approaches. Asynchronous operation is achieved by generating the spike source for the photonic neuron through four-wave mixing. This hybrid analog/digital photonic neuron has an electro-absorption modulator as the temporal integration unit for analog processing, while the digital processing portion employs optical thresholding in a highly Ge-doped nonlinear loop mirror.
© 2012 Optical Society of America
Original Manuscript: June 1, 2012
Revised Manuscript: June 23, 2012
Manuscript Accepted: June 28, 2012
Published: August 3, 2012
Vol. 7, Iss. 10 Virtual Journal for Biomedical Optics
Mable P. Fok, Yue Tian, David Rosenbluth, and Paul R. Prucnal, "Asynchronous spiking photonic neuron for lightwave neuromorphic signal processing," Opt. Lett. 37, 3309-3311 (2012)