Back to results
US 11,694,071 B2Granted
Optical neural network apparatus including passive phase modulator
AssigneeSamsung Electronics Co., Ltd.
InventorDuhyun Lee
Life of this patent
Estimating the term…
Abstract
An optical neural network apparatus that optically implements an artificial neural network includes an input layer, a hidden layer, and an output layer sequentially arranged in a traveling direction of light, wherein the output layer includes an image sensor including a plurality of light sensing pixels arranged in two dimensions, and wherein the input layer or the hidden layer includes at least one passive phase modulator configured to locally modulate a phase of incident light depending on positions on a two dimensional plane.
Claims30
An optical neural network apparatus comprising:
- an input layer, a hidden layer, and an output layer sequentially arranged in a traveling direction of light,
- wherein the output layer comprises an image sensor, the image sensor comprising a plurality of light sensing pixels arranged in two dimensions,
- wherein the input layer or the hidden layer comprises at least one passive phase modulator configured to modulate a phase of incident light based on an incident position of the incident light on a two dimensional plane of the at least one passive phase modulator,
- wherein the at least one passive phase modulator comprises:
- a transparent substrate;
- and
- a plurality of phase shifting elements arranged on the substrate,
- wherein each phase shifting element from among the plurality of phase shifting elements has a shape of a column arranged on the substrate,
- wherein each phase shifting element from among the plurality of phase shifting elements has a respective diameter based on a position of the phase shifting element on the substrate, and
- wherein the respective diameter of each phase shifting element from among the plurality of phase shifting elements is based on a respective weight corresponding to the position of the phase shifting element on the substrate.
7 more elements
An optical neural network apparatus comprising:
- a first phase modulator configured to modulate a phase of an incident light ray based on an incident position of the incident light ray on the first phase modulator and to emit a first modulated light ray;
- a second phase modulator configured to modulate a phase of the first modulated light ray emitted by the first phase modulator based on an incident position of the first modulated light ray on the second phase modulator and to emit a second modulated light ray;
- and
- a sensor configured to sense the second modulated light ray, the sensor comprising a plurality of light sensing pixels arranged in two dimensions,
- wherein one of the first phase modulator and the second phase modulator comprises an active phase modulator,
- wherein the other of the first phase modulator and the second phase modulator comprises a passive phase modulator,
- wherein the passive phase modulator comprises a plurality of columns arranged on a surface of a transparent substrate,
- wherein each column from among the plurality of columns has a respective diameter based on a position of the column on the transparent substrate, and
- wherein the respective diameter of each column from among the plurality of columns is based on a respective weight corresponding to the position of the column on the substrate.
6 more elements
Dependencies are inferred from the claim text.