Abstract

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

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References

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  1. C. Koch, Biophysics of Computation (Oxford University Press, 1999).
  2. D. Rosenbluth, K. Kravtsov, M. P. Fok, and P. R. Prucnal, Opt. Express 17, 22767 (2009).
  3. M. P. Fok, H. Deming, M. Nahmias, N. Rafidi, D. Rosenbluth, A. Tait, Y. Tian, and P. R. Prucnal, Opt. Lett. 36, 19 (2011).
    [CrossRef]
  4. Y. Tian, M. P. Fok, D. Rosenbluth, and P. R. Prucnal, in Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC) (Los Angeles, CA, USA, March 2012), paper OTh3H.1.
  5. K. Kravtsov, P. R. Prucnal, and M. M. Bubnov, Opt. Mater. Express 15, 114 (2007).
    [CrossRef]
  6. Hans-Georg Weber, Ultrahigh-Speed Optical Transmission Technology (Springer, 2007).

2011 (1)

2009 (1)

2007 (1)

K. Kravtsov, P. R. Prucnal, and M. M. Bubnov, Opt. Mater. Express 15, 114 (2007).
[CrossRef]

Bubnov, M. M.

K. Kravtsov, P. R. Prucnal, and M. M. Bubnov, Opt. Mater. Express 15, 114 (2007).
[CrossRef]

Deming, H.

Fok, M. P.

M. P. Fok, H. Deming, M. Nahmias, N. Rafidi, D. Rosenbluth, A. Tait, Y. Tian, and P. R. Prucnal, Opt. Lett. 36, 19 (2011).
[CrossRef]

D. Rosenbluth, K. Kravtsov, M. P. Fok, and P. R. Prucnal, Opt. Express 17, 22767 (2009).

Y. Tian, M. P. Fok, D. Rosenbluth, and P. R. Prucnal, in Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC) (Los Angeles, CA, USA, March 2012), paper OTh3H.1.

Koch, C.

C. Koch, Biophysics of Computation (Oxford University Press, 1999).

Kravtsov, K.

D. Rosenbluth, K. Kravtsov, M. P. Fok, and P. R. Prucnal, Opt. Express 17, 22767 (2009).

K. Kravtsov, P. R. Prucnal, and M. M. Bubnov, Opt. Mater. Express 15, 114 (2007).
[CrossRef]

Nahmias, M.

Prucnal, P. R.

M. P. Fok, H. Deming, M. Nahmias, N. Rafidi, D. Rosenbluth, A. Tait, Y. Tian, and P. R. Prucnal, Opt. Lett. 36, 19 (2011).
[CrossRef]

D. Rosenbluth, K. Kravtsov, M. P. Fok, and P. R. Prucnal, Opt. Express 17, 22767 (2009).

K. Kravtsov, P. R. Prucnal, and M. M. Bubnov, Opt. Mater. Express 15, 114 (2007).
[CrossRef]

Y. Tian, M. P. Fok, D. Rosenbluth, and P. R. Prucnal, in Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC) (Los Angeles, CA, USA, March 2012), paper OTh3H.1.

Rafidi, N.

Rosenbluth, D.

M. P. Fok, H. Deming, M. Nahmias, N. Rafidi, D. Rosenbluth, A. Tait, Y. Tian, and P. R. Prucnal, Opt. Lett. 36, 19 (2011).
[CrossRef]

D. Rosenbluth, K. Kravtsov, M. P. Fok, and P. R. Prucnal, Opt. Express 17, 22767 (2009).

Y. Tian, M. P. Fok, D. Rosenbluth, and P. R. Prucnal, in Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC) (Los Angeles, CA, USA, March 2012), paper OTh3H.1.

Tait, A.

Tian, Y.

M. P. Fok, H. Deming, M. Nahmias, N. Rafidi, D. Rosenbluth, A. Tait, Y. Tian, and P. R. Prucnal, Opt. Lett. 36, 19 (2011).
[CrossRef]

Y. Tian, M. P. Fok, D. Rosenbluth, and P. R. Prucnal, in Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC) (Los Angeles, CA, USA, March 2012), paper OTh3H.1.

Weber, Hans-Georg

Hans-Georg Weber, Ultrahigh-Speed Optical Transmission Technology (Springer, 2007).

Opt. Express (1)

Opt. Lett. (1)

Opt. Mater. Express (1)

K. Kravtsov, P. R. Prucnal, and M. M. Bubnov, Opt. Mater. Express 15, 114 (2007).
[CrossRef]

Other (3)

Hans-Georg Weber, Ultrahigh-Speed Optical Transmission Technology (Springer, 2007).

Y. Tian, M. P. Fok, D. Rosenbluth, and P. R. Prucnal, in Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC) (Los Angeles, CA, USA, March 2012), paper OTh3H.1.

C. Koch, Biophysics of Computation (Oxford University Press, 1999).

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Figures (4)

Fig. 1.
Fig. 1.

Illustration of an asynchronous spiking photonics neuron. W1WN, variable weight; T1TN, variable time delay; FWM, four-wave mixing; LD, laser diode; EAM, electro-absorption modulator; Ge-doped NLM, optical thresholder.

Fig. 2.
Fig. 2.

(a) Measured absorption recovery time as a function of EAM bias voltage. (b) Measured absorption recovery time as a function of optical pump-pulse attenuation. (c) Integration response of the EAM with different temporal separation of the pump pulses.

Fig. 3.
Fig. 3.

Time-sensitive signal integration in EAM: (a) input signal, (b) integrated output with long integration window, and (c) integrated output with short integration window.

Fig. 4.
Fig. 4.

Experimental results of input, spike source, and output pulses in three different cases with different time intervals and weight values.

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