公开(公告)号：US11824631B2

公开(公告)日：2023-11-21

申请号：US17573492

申请日：2022-01-11

Applicant: X Development LLC

Inventor： Martin Schubert ,  Brian Adolf ,  Jesse Lu

IPC: H04J14/02 ,  H04B10/25 ,  G06F30/30 ,  G06F30/367

CPC classification number: H04J14/02 ,  G06F30/30 ,  G06F30/367 ,  H04B10/25

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.

公开(公告)号：US20230058239A1

公开(公告)日：2023-02-23

申请号：US18048702

申请日：2022-10-21

Applicant: X Development LLC

Inventor： Brian Adolf ,  Patricia Prewitt

IPC: G06F30/398 ,  G06F30/392 ,  H04J14/02

Abstract: In some embodiments, logic stored on a computer-readable medium, in response to execution, causes a computing system to conduct an inverse design process to generate a plurality of segmented designs corresponding to a plurality of device specifications, determine at least one highly impactful design area based on the plurality of segmented designs; and designate the at least one highly impactful design area as a static design area. In some embodiments, a product line comprising a plurality of physical devices is provided. Each physical device of the plurality of physical devices includes a design region that includes a static design area and a customized design area. The static design area for each physical device is the same for each physical device of the plurality of physical devices, and the customized design area for each physical device is different for each physical device of the plurality of physical devices.

公开(公告)号：US11205022B2

公开(公告)日：2021-12-21

申请号：US16244846

申请日：2019-01-10

Applicant: X Development LLC

Inventor： Jesse Lu ,  Martin Schubert ,  Brian Adolf

IPC: G06F30/00 ,  G06F111/10 ,  G06F30/23

Abstract: A method and system for optimizing structural parameters of an electromagnetic device is described that includes performing operations. The operations include performing a time-forward simulation of a field response in a simulated environment describing the electromagnetic device and extracting decomposition components from the field response to compute a loss value. The operations further include backpropagating the loss value backwards in time using the decomposition components to determine an influence of changes in the structural parameters of the electromagnetic device on the loss value. The operations further include generating a revised description of the electromagnetic device by updating the structural parameters to reduce the loss value.

公开(公告)号：US20210143930A1

公开(公告)日：2021-05-13

申请号：US17084032

申请日：2020-10-29

Applicant: X Development LLC

Inventor： Martin Schubert ,  Brian Adolf ,  Jesse Lu

IPC: H04J14/02 ,  H04B10/25 ,  G06F30/367 ,  G06F30/30

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.

公开(公告)号：US20200342325A1

公开(公告)日：2020-10-29

申请号：US16393666

申请日：2019-04-24

Applicant: X Development LLC

Inventor： Jesse Lu ,  Brian Adolf ,  Martin Schubert

IPC: G06N3/08 ,  G06F17/50

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.

公开(公告)号：US11258527B2

公开(公告)日：2022-02-22

申请号：US17084032

申请日：2020-10-29

Applicant: X Development LLC

Inventor： Martin Schubert ,  Brian Adolf ,  Jesse Lu

IPC: H04J14/02 ,  H04B10/25 ,  G06F30/30 ,  G06F30/367

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.

公开(公告)号：US11238190B1

公开(公告)日：2022-02-01

申请号：US16392430

申请日：2019-04-23

Applicant: X Development LLC

Inventor： Jesse Lu ,  Brian Adolf ,  Martin Schubert

IPC: G06F30/20 ,  G06F111/10

Abstract: A method and system for optimizing structural parameters of a physical device is described. The method includes receiving an initial description of the physical device that describes structural parameters of the physical device within a simulated environment. The method further includes performing an operational simulation of the physical device in response to an excitation source, performing an adjoint simulation by backpropagating a placeholder metric through a simulated environment to determine a loss gradient, updating the loss gradient based, at least in part, on a loss metric determined from the operational simulation. Additionally, the method further comprises computing a structural gradient corresponding to an influence of changes in the structural parameters on the loss metric and generating a revised description of the physical device by updating the structural parameters based on the structural gradient to reduce the loss metric.

公开(公告)号：US20210211195A1

公开(公告)日：2021-07-08

申请号：US17209739

申请日：2021-03-23

Applicant: X Development LLC

Inventor： Brian Adolf

IPC: H04B10/077 ,  G06F30/367

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 include 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.

公开(公告)号：US11003814B1

公开(公告)日：2021-05-11

申请号：US16419804

申请日：2019-05-22

Applicant: X Development LLC

Inventor： Brian Adolf

IPC: G06F30/20

Abstract: A technique for optimizing a physical device includes receiving an initial description of the physical device that describes the physical device with voxels that each describes one or more structural parameters of the physical device. The initial description includes a characterization including a desired output signal generated at an output region of the physical device in response to a source signal at a source region of the physical device. A field response is forward simulated from the source region to the output region to generate a forward simulated output signal. Structural parameter weights of the voxels are adjusted with an adaptive algorithm configured to reduce an error between the forward simulated output signal and the desired output signal. The structural parameters of the voxels are revised based upon the adjusting. The forward simulating, adjusting, and revising are iteratively repeated and a revised/optimized description of the physical device is generated.

公开(公告)号：US10862610B1

公开(公告)日：2020-12-08

申请号：US16679579

申请日：2019-11-11

Applicant: X Development LLC

Inventor： Martin Schubert ,  Brian Adolf ,  Jesse Lu

IPC: H04J14/02 ,  H04B10/25 ,  G06F30/30 ,  G06F30/367

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.