公开(公告)号：US20240411157A1

公开(公告)日：2024-12-12

申请号：US18208724

申请日：2023-06-12

Applicant: X Development LLC

Inventor： Brian Adolf

IPC: G02F1/025

Abstract: A photonic integrated circuit including an optical modulator, one or more waveguides, and an outcoupler is described. The optical modulator includes a modulation region and a modulation actuator. The modulation region includes an inhomogeneous arrangement of two or more different materials having different refractive indexes to structure the modulation region to manipulate one or more optical properties of an optical carrier wave in response to a modulation bias. The modulation actuator is disposed proximate to the modulation region and adapted to apply the modulation bias to the modulation region to generate a first signal and a second signal. The outcoupler is optically coupled to the one or more waveguides to receive the first signal and the second signal and further adapted to preserve the first signal and the second signal as a combined signal directed out of the photonic integrated circuit.

公开(公告)号：US11900026B1

公开(公告)日：2024-02-13

申请号：US16393654

申请日：2019-04-24

Applicant: X Development LLC

Inventor： Martin Schubert ,  Brian Adolf ,  Jesse Lu

IPC: G06F30/20 ,  G06N3/084 ,  G06N3/045 ,  G06F30/27 ,  G06F30/23 ,  G06F111/04 ,  G06F119/18 ,  G06F119/22 ,  G02B5/02

CPC classification number: G06F30/20 ,  G06N3/045 ,  G06N3/084 ,  G02B5/0268 ,  G06F30/23 ,  G06F30/27 ,  G06F2111/04 ,  G06F2119/18 ,  G06F2119/22 ,  Y02P90/02

Abstract: A computer-implemented method for modeling fabrication constraints of a fabrication process is described. The method includes receiving training data including pre-fabrication structures and post-fabrication, training a fabrication constraint model by optimizing parameters of the fabrication constraint model based on the training data to model the fabrication constraints of the fabrication process, receiving an input design corresponding to a physical device, and generating a fabricability metric of the input design via the fabrication constraint model. The fabricability metric is related to a probabilistic certainty that the input design is fabricable by the fabrication process determined by the fabrication constraint model.

公开(公告)号：US11861290B2

公开(公告)日：2024-01-02

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

CPC classification number: 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：US11703640B2

公开(公告)日：2023-07-18

申请号：US17490622

申请日：2021-09-30

Applicant: X Development LLC

Inventor： Martin Schubert ,  Brian Adolf ,  Jesse Lu

IPC: G02B6/12 ,  G06F30/23

CPC classification number: G02B6/12007 ,  G02B6/12004 ,  G06F30/23

Abstract: A two-channel photonic demultiplexer includes an input region to receive a multi-channel optical signal, two output regions, each adapted to receive a corresponding one of two distinct wavelength channels demultiplexed from the multi-channel optical signal, and a dispersive region including a first material and a second material inhomogeneously interspersed to form a plurality of interfaces that collectively structure the dispersive region to optically separate each of the two distinct wavelength channels from the multi-channel optical signal and respectively guide the first distinct wavelength channel to a first output region and the second distinct wavelength channel to the second output region when the input region receives the multi-channel optical signal. At least one of the first material or the second material is structured within the dispersive region to be schematically reproducible by a feature shape with a pre-determined width.

公开(公告)号：US20220077948A1

公开(公告)日：2022-03-10

申请号：US17529112

申请日：2021-11-17

Applicant: X Development LLC

Inventor： Jesse Lu ,  Brian Adolf ,  Martin Schubert

IPC: H04J14/02 ,  H04B10/073 ,  G06N3/08 ,  G05B19/4097

Abstract: Embodiments of techniques for inverse design of physical devices are described herein, in the context of generating designs for photonic integrated circuits (including a multi-channel photonic demultiplexer). In some embodiments, an initial design of the physical device is received, and a plurality of sets of operating conditions for fabrication of the physical device are determined. In some embodiments, the performance of the physical device as fabricated under the sets of operating conditions is simulated, and a total performance loss value is backpropagated to determine a gradient to be used to update the initial design. In some embodiments, instead of simulating fabrication of the physical device under the sets of operating conditions, a robustness loss is determined and combined with the performance loss to determine the gradient.

公开(公告)号：US11271643B2

公开(公告)日：2022-03-08

申请号：US17209739

申请日：2021-03-23

Applicant: X Development LLC

Inventor： Brian Adolf

IPC: H04B10/077 ,  G06F30/367 ,  G01R29/08 ,  H02J7/02

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：US11196503B2

公开(公告)日：2021-12-07

申请号：US16796660

申请日：2020-02-20

Applicant: X Development LLC

Inventor： Jesse Lu ,  Brian Adolf ,  Martin Schubert

IPC: H04B10/07 ,  H04J14/02 ,  H04B10/073 ,  G06N3/08 ,  G05B19/4097 ,  G06F30/20 ,  H04J14/00 ,  H04B10/079

Abstract: Embodiments of techniques for inverse design of physical devices are described herein, in the context of generating designs for photonic integrated circuits (including a multi-channel photonic demultiplexer). In some embodiments, an initial design of the physical device is received, and a plurality of sets of operating conditions for fabrication of the physical device are determined. In some embodiments, the performance of the physical device as fabricated under the sets of operating conditions is simulated, and a total performance loss value is backpropagated to determine a gradient to be used to update the initial design. In some embodiments, instead of simulating fabrication of the physical device under the sets of operating conditions, a robustness loss is determined and combined with the performance loss to determine the gradient.

公开(公告)号：US11187854B2

公开(公告)日：2021-11-30

申请号：US16685473

申请日：2019-11-15

Applicant: X Development LLC

Inventor： Martin Schubert ,  Brian Adolf ,  Jesse Lu

IPC: G02B6/12 ,  G06F30/23

Abstract: A two-channel photonic demultiplexer includes an input region to receive a multi-channel optical signal, two output regions, each adapted to receive a corresponding one of two distinct wavelength channels demultiplexed from the multi-channel optical signal, and a dispersive region including a first material and a second material inhomogeneously interspersed to form a plurality of interfaces that collectively structure the dispersive region to optically separate each of the two distinct wavelength channels from the multi-channel optical signal and respectively guide the first distinct wavelength channel to a first output region and the second distinct wavelength channel to the second output region when the input region receives the multi-channel optical signal. At least one of the first material or the second material is structured within the dispersive region to be schematically reproducible by a feature shape with a pre-determined width.

公开(公告)号：US20210266088A1

公开(公告)日：2021-08-26

申请号：US16796660

申请日：2020-02-20

Applicant: X Development LLC

Inventor： Jesse Lu ,  Brian Adolf ,  Martin Schubert

IPC: H04J14/02 ,  H04B10/073 ,  G05B19/4097 ,  G06N3/08

Abstract: Embodiments of techniques for inverse design of physical devices are described herein, in the context of generating designs for photonic integrated circuits (including a multi-channel photonic demultiplexer). In some embodiments, an initial design of the physical device is received, and a plurality of sets of operating conditions for fabrication of the physical device are determined. In some embodiments, the performance of the physical device as fabricated under the sets of operating conditions is simulated, and a total performance loss value is backpropagated to determine a gradient to be used to update the initial design. In some embodiments, instead of simulating fabrication of the physical device under the sets of operating conditions, a robustness loss is determined and combined with the performance loss to determine the gradient.

公开(公告)号：US10885262B1

公开(公告)日：2021-01-05

申请号：US16796500

申请日：2020-02-20

Applicant: X Development LLC

Inventor： Brian Adolf ,  Jesse Lu ,  Martin Schubert

IPC: G06F30/398 ,  G06F119/18

Abstract: In some embodiments, a design verification system is provided that is configured to perform actions for ensuring fabricability of a segmented design. The design verification system searches a proposed segmented design for a paintbrush pattern to determine a positive paintbrush loss, and searches for an inverse paintbrush pattern to determine a negative paintbrush loss. The design verification system combines the positive paintbrush loss and the negative paintbrush loss to obtain a total paintbrush loss that indicates whether or not the proposed segmented design is fabricable. If the total paintbrush loss indicates that the proposed segmented design is not fabricable, the design verification system updates the proposed segmented design based on a gradient of the total paintbrush loss.