Smart time-pulse coding photoconverters as basic components 2D-array logic devices for advanced neural networks and optical computers

Vladimir G. Krasilenko; Alexander I. Nikolsky; Alexander A. Lazarev; Nikolay N. Michalnichenko

doi:10.1117/12.542990

12 April 2004 Smart time-pulse coding photoconverters as basic components 2D-array logic devices for advanced neural networks and optical computers

Vladimir G. Krasilenko, Alexander I. Nikolsky, Alexander A. Lazarev, Nikolay N. Michalnichenko

Author Affiliations +

Proceedings Volume 5439, Independent Component Analyses, Wavelets, Unsupervised Smart Sensors, and Neural Networks II; (2004) https://doi.org/10.1117/12.542990
Event: Defense and Security, 2004, Orlando, Florida, United States

Abstract

The article deals with a conception of building arithmetic-logic devices (ALD) with a 2D-structure and optical 2D-array inputs-outputs as advanced high-productivity parallel basic operational training modules for realization of basic operation of continuous, neuro-fuzzy, multilevel, threshold and others logics and vector-matrix, vector-tensor procedures in neural networks, that consists in use of time-pulse coding (TPC) architecture and 2D-array smart optoelectronic pulse-width (or pulse-phase) modulators (PWM or PPM) for transformation of input pictures. The input grayscale image is transformed into a group of corresponding short optical pulses or time positions of optical two-level signal swing. We consider optoelectronic implementations of universal (quasi-universal) picture element of two-valued ALD, multi-valued ALD, analog-to-digital converters, multilevel threshold discriminators and we show that 2D-array time-pulse photoconverters are the base elements for these devices. We show simulation results of the time-pulse photoconverters as base components. Considered devices have technical parameters: input optical signals power is 200nW_200μW (if photodiode responsivity is 0.5A/W), conversion time is from tens of microseconds to a millisecond, supply voltage is 1.5_15V, consumption power is from tens of microwatts to a milliwatt, conversion nonlinearity is less than 1%. One cell consists of 2-3 photodiodes and about ten CMOS transistors. This simplicity of the cells allows to carry out their integration in arrays of 32x32, 64x64 elements and more.

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Vladimir G. Krasilenko, Alexander I. Nikolsky, Alexander A. Lazarev, and Nikolay N. Michalnichenko "Smart time-pulse coding photoconverters as basic components 2D-array logic devices for advanced neural networks and optical computers", Proc. SPIE 5439, Independent Component Analyses, Wavelets, Unsupervised Smart Sensors, and Neural Networks II, (12 April 2004); https://doi.org/10.1117/12.542990

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