NEURAL NETWORK INFERENCE WITHIN PHYSICAL DOMAIN VIA INVERSE DESIGN TOOL

    公开(公告)号:US20200342325A1

    公开(公告)日:2020-10-29

    申请号:US16393666

    申请日:2019-04-24

    Abstract: A computer-implemented method for revising structural parameters of a physical device is provided. The method comprises configuring a simulated environment to be representative of the physical device based on an initial description that describes structural parameters of the physical device. The method further includes performing an operational simulation of the physical device based on training data representative of physical stimuli within a physical domain to simulate an interaction between the physical device and the physical stimuli. The method further includes computing a loss value based on a simulated output of the physical device and performing and adjoint simulation by backpropagating the loss value through the simulated environment. The method also includes generating a revised description of the physical device by updating the structural parameters to reduce the loss value.

    Techniques for fusing multiple loss functions in an inverse design process

    公开(公告)号:US12147739B2

    公开(公告)日:2024-11-19

    申请号:US17402141

    申请日:2021-08-13

    Abstract: In some embodiments, a computer-implemented method for creating a fabricable segmented design for a physical device is provided. A computing system receives a design specification. The computing system generates a proposed segmented design based on the design specification. The computing system determines two or more loss values based on the proposed segmented design. The computing system combines the two or more loss values to create a combined loss value. The computing system creates an updated design specification using the combined loss value. The generating, determining, combining, and creating actions are repeated until a fabricable segmented design is generated.

    MULTI-CHANNEL INTEGRATED PHOTONIC WAVELENGTH DEMULTIPLEXER

    公开(公告)号:US20220131632A1

    公开(公告)日:2022-04-28

    申请号:US17573492

    申请日:2022-01-11

    Abstract: A multi-channel photonic demultiplexer includes an input region to receive a multi-channel optical signal including four distinct wavelength channels, four output regions, each adapted to receive a corresponding one of the four distinct wavelength channels demultiplexed from the multi-channel optical signal, and a dispersive region optically disposed between the input region and the four output regions. The dispersive region includes a first material and a second material inhomogeneously interspersed to form a plurality of interfaces that each correspond to a change in refractive index of the dispersive region and collectively structure the dispersive region to optically separate each of the four distinct wavelength channels from the multi-channel optical signal and respectively guide each of the four distinct wavelength channels to the corresponding one of the four output regions.

    Physical device optimization with reduced memory footprint via time reversal at absorbing boundaries

    公开(公告)号:US11106841B1

    公开(公告)日:2021-08-31

    申请号:US16397395

    申请日:2019-04-29

    Abstract: A system, apparatus, and method for optimizing structural parameters of a physical device are described. The method includes receiving an initial description of the physical device describing the structural parameters within a simulated environment. The method further includes performing a simulation of the physical device in response to an excitation source to determine a performance metric of the physical device. The simulation environment includes one or more absorbing boundaries for attenuation of an output of the excitation source during the simulation. The method further includes recording attenuated field values of the simulated environment associated with the attenuation during the simulation. The method further includes determining a loss metric based on a difference between the performance metric and a target performance metric, backpropagating the loss metric using the attenuated field values, and generating a revised description of the physical device by updating the structural parameters to reduce the loss metric.

    Physical electromagnetics simulator for design optimization of photonic devices

    公开(公告)号:US10992375B1

    公开(公告)日:2021-04-27

    申请号:US16738727

    申请日:2020-01-09

    Inventor: Brian Adolf

    Abstract: A physical voxel, a volumetric testbed, and method for physically simulating a photonic device are described herein. The volumetric testbed comprises a simulation stage and a controller. The simulation stage includes a three-dimensional array of physical voxels configurable to represent the photonic device operating in response to electromagnetic radiation. The physical voxels includes a field detector to measure a local field response and an impedance adjuster to adjust an impedance to the electromagnetic radiation. The controller is coupled to memory, which stores instructions that when executed by one or more processors included in the controller causes the volumetric testbed to perform operations including determining a global field response of the photonic device and adjusting the impedance of the physical voxels to refine a design of the photonic device.

    Systems and methods for wireless charging

    公开(公告)号:US10418856B2

    公开(公告)日:2019-09-17

    申请号:US15353638

    申请日:2016-11-16

    Abstract: Systems and methods described herein may relate to wireless energy transfer between a transmitter and a receiver via resonant coupling. In example embodiments, a method includes identifying a receiver in a wireless power transmission system and identifying a transmitter in the wireless power transmission system. The method also includes determining a real-time per-unit offer corresponding to the identified receiver and determining a real-time per-unit request corresponding to the identified transmitter. The method yet further includes determining a real-time per-unit match based on the offer and the request. The method further includes, in response to determining the match, causing the transmitter to provide electrical energy to the receiver via a wireless resonant coupling link.

    Adapter for electronic devices
    17.
    发明授权

    公开(公告)号:US10381878B1

    公开(公告)日:2019-08-13

    申请号:US15394133

    申请日:2016-12-29

    Abstract: Disclosed herein is a method of determining an operational configuration of a wireless power adapter. The method includes determining whether the wireless power adapter is calibrated to supply a legacy device with electrical energy. The method further includes, in response to determining that the wireless power adapter is not calibrated to supply the legacy device with electrical energy, delivering a first power signal to the legacy device via a first electrical coupling member. The method also includes detecting a response of the legacy device to receiving the first power signal, and based on the response of the legacy device, determining an operational configuration of the wireless power adapter. Furthermore, the method includes configuring the wireless power adapter to operate according to the determined operational configuration.

    SENSOR FUSION FOR BRAIN MEASUREMENT
    18.
    发明申请

    公开(公告)号:US20180160982A1

    公开(公告)日:2018-06-14

    申请号:US15374428

    申请日:2016-12-09

    Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for receiving brain activity data of a user from a brainwave sensor and user physiological data from a non-brainwave sensor, where the brain activity data represents a brainwave pattern related to a physiological activity of the user and a brainwave pattern related to a mental activity of the user. Identifying a physiological action of the user based on the user physiological data. Identifying, within the brain activity data, a pattern that is representative of the identified physiological action. Filtering the brain activity data to lessen a contribution of the pattern representative of the identified physiological action to the brain activity data, thereby, providing filtered brain activity data.

    Systems, Devices, and Methods for Calibrating A Light Field Projection System

    公开(公告)号:US20180152697A1

    公开(公告)日:2018-05-31

    申请号:US15361641

    申请日:2016-11-28

    Abstract: The present disclosure relates to systems, devices, and methods for calibrating a light field projection system. One example system includes a projection unit operable to project a scanning sequence toward a screen having convex reflective elements. The scanning sequence is modulated according to a baseline intensity profile. The system also includes a calibration device disposed such that a portion of the scanning sequence is intercepted by the calibration device. The calibration device includes a first light detector arranged to detect an intercepted intensity profile. The calibration device also includes a second light detector arranged to detect a reflected portion of the scanning sequence as a measured intensity profile. The system further includes a control system. The control system is configured to determine an expected intensity profile and to modify operation of the light field projection system based on a comparison of the measured intensity profile to the expected intensity profile.

    OPTIMIZATION OF HEATERS FOR TUNING PHOTONIC DEVICES

    公开(公告)号:US20250111116A1

    公开(公告)日:2025-04-03

    申请号:US18479731

    申请日:2023-10-02

    Abstract: In some embodiments, a computer-implemented method of creating a design for an optoelectronic device is provided. A computing system determines an initial heater design that includes one or more heater parameters. The computing system determines a temperature gradation by simulating performance of the initial heater design in adjusting an environmental temperature to a nominal temperature. The computing system simulates performance of a nominal optimized design of a dispersive region of the optoelectronic device, given the temperature gradation, to determine a temperature-influenced performance loss value. The computing system determines a heater parameter gradient based on the temperature-influenced performance loss value, and revises the heater parameters based at least in part on the heater parameter gradient to create a revised heater design.

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