US 2025/0190776 A1 · Method and device for weight adjustment in an optical neural network

Abstract

A device for weight adjustment in an optical neural network is provided. The device includes a first waveguide configured to receive and transmit an input optical signal. The input optical signal is defined by an amplitude and a first wavelength. The device further includes an optical resonator in optical communication with the first waveguide. The optical resonator has a first refractive index and is defined by a first resonance frequency. The amplitude of the input optical signal is modulated by the optical resonator based on the first resonance frequency to obtain a first weighted input optical signal. The device further includes a second waveguide optically coupled with the optical resonator. The second waveguide is configured to transmit a backpropagation optical signal that is defined by a second wavelength. The backpropagation optical signal is partially coupled into the optical resonator to adjust the first resonance frequency to a second resonance frequency. An amplitude of a subsequent input optical signal is modulated by the optical resonator based on the second resonance frequency to obtain a second weighted input optical signal.

Claims22

Dependent claims

A device for weight adjustment in an optical neural network, comprising:

a first waveguide configured to receive and transmit an input optical signal, wherein the input optical signal is defined by an amplitude and a first wavelength;
an optical resonator in optical communication with the first waveguide, wherein the optical resonator has a first refractive index and is defined by a first resonance frequency, and wherein the amplitude of the input optical signal is modulated by the optical resonator based on the first resonance frequency to obtain a first weighted input optical signal;
and
a second waveguide optically coupled with the optical resonator, wherein the second waveguide is configured to transmit a backpropagation optical signal that is defined by a second wavelength, and wherein the backpropagation optical signal is partially coupled into the optical resonator to adjust the first resonance frequency to a second resonance frequency;
wherein an amplitude of a subsequent input optical signal is modulated by the optical resonator based on the second resonance frequency to obtain a second weighted input optical signal.

2 more elements

A method for adjusting weight in an optical neural network, comprising:

receiving, by a first waveguide, an input optical signal, wherein the input optical signal has an amplitude and is defined by a first wavelength;
transmitting the input optical signal from the first waveguide to an optical resonator in optical communication with the first waveguide, wherein the optical resonator has a first refractive index and is defined by a first resonance frequency;
modulating, by the optical resonator, the amplitude of the input optical signal based on the first resonance frequency to obtain a first weighted input optical signal;
transmitting, by a second waveguide that is optically coupled with the optical resonator, a backpropagation optical signal that is defined by a second wavelength;
coupling a partial amount of the backpropagation optical signal into the optical resonator, wherein the backpropagation optical signal is partially coupled into the optical resonator to adjust the first resonance frequency to a second resonance frequency;
and
modulating, by the optical resonator, an amplitude of a subsequent input optical signal based on the second resonance frequency to obtain a second weighted input optical signal.

4 more elements

Dependencies are inferred from the claim text.

Method and device for weight adjustment in an optical neural network

Life of this patent

Method and device for weight adjustment in an optical neural network

Life of this patent

Abstract

Claims22