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Updated: Jul 7, 2026

Optrode Array for Simultaneous Optogenetic Modulation and Electrical Neural Recording

Optrode Array for Simultaneous Optogenetic Modulation and Electrical Neural Recording

Published on: September 1, 2022

A scalable optoelectronic neural system using free-space optical interconnects.

A V Krishnamoorthy¹, G Yayla, S Esener

¹Dept. of Electr. and Comput. Eng., California Univ., San Diego, La Jolla, CA.

IEEE Transactions on Neural Networks

|January 1, 1992

Summary

A novel 3-D optoelectronic neural system utilizes free-space optics and hybrid silicon circuits. This design efficiently integrates pulsewidth-modulating neurons and pulse-amplitude-modulating synapses for scalable, high-performance computing.

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Area of Science:

Optoelectronics
Neuro-inspired computing
Integrated circuits

Background:

Traditional computing faces limitations in scalability and energy efficiency for complex tasks.
Optoelectronic systems offer potential for high-speed, parallel processing.
Integrating optical interconnects with electronic circuits presents a promising hybrid approach.

Purpose of the Study:

To propose a design for a scalable, fully connected 3-D optoelectronic neural system.
To leverage free-space optical interconnects for enhanced system performance.
To develop efficient hybrid optoelectronic circuits using silicon-VLSI technology.

Main Methods:

Hardware-efficient design combining pulsewidth-modulating (PWM) optoelectronic neurons.
Pulse-amplitude-modulating (PAM) electronic synapses for efficient signal transmission.

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Scalable Fluidic Injector Arrays for Viral Targeting of Intact 3-D Brain Circuits

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Published on: January 21, 2010

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Last Updated: Jul 7, 2026

Optrode Array for Simultaneous Optogenetic Modulation and Electrical Neural Recording

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Published on: September 1, 2022

Scalable Fluidic Injector Arrays for Viral Targeting of Intact 3-D Brain Circuits

Scalable Fluidic Injector Arrays for Viral Targeting of Intact 3-D Brain Circuits

Published on: January 21, 2010

Development of low-area, high-linear-dynamic-range analog synapse and neuron circuits.

Validation through SPICE circuit simulations and experimental demonstration of optical interconnects.

Main Results:

Proposed low-area analog synapse and neuron circuits with high linear dynamic range.
Demonstrated feasibility of free-space optical interconnection for the neural system.
SPICE simulations confirmed the functionality and efficiency of the proposed hybrid circuits.

Conclusions:

The proposed 3-D optoelectronic neural system design is scalable and efficient.
Hybrid optoelectronic circuits with free-space optical interconnects offer a viable path for advanced computing.
The developed analog circuits pave the way for high-performance neuro-inspired hardware.