Multistage opto-neuromorphic process system based on commercial optoelectric devices

초록

This paper proposes a structure for opto-neuromorphic processes by using multistage connections of phototransmitters. The basic unit consists of a light-emitting diode and a photoresistor for a non-inverting photo signal processor. By constructing a cascade structure of these basic units, multistage photo transmission of input light signal is examined in pulse signals with various periods and duty cycles as the input to the first opto-neuromorphic stage. This approach verifies that optical signals can be transmitted through our proposed structure and that by controlling the amount of the transmitted light between the basic units, the gain between stages can be controlled. It is demonstrated that this structure can be used for opto-neuromorphic processes by transmitting light signals as if transmitting signals between neurons with different weights and activation patterns. The proposed structure can be modified with an inverter circuit to build a photo-inverter and by using a combination of photo-transmitter and photo-inverters, it can serve as the basic structure to build more complicated opto-neuromorphic process systems.

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