公开(公告)号：US11579303B2

公开(公告)日：2023-02-14

申请号：US16554090

申请日：2019-08-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Keyvan Sayyah ,  Oleg Efimov ,  Biqin Huang ,  Raymond Sarkissian ,  James H. Schaffner ,  David Hammon ,  Richard Kremer ,  Timothy J. Talty ,  Michael Mulqueen ,  Pamela R. Patterson

IPC: G01S17/931 ,  G01S7/48 ,  G01S17/32 ,  G01S7/481 ,  G05D1/02

Abstract: A vehicle, Lidar system and method of detecting an object is disclosed. The Lidar system includes a photonic chip, and a laser integrated into the photonic chip. The laser has a front facet located at a first aperture of the photonic chip to direct a transmitted light beam into free space. A reflected light beam that is a reflection of the transmitted light beam is received at the photonic chip and a parameter of the object is determined from a comparison of the transmitted light beam and the reflected light beam. A navigation system operates the vehicle with respect to the object based on a parameter of the object.

公开(公告)号：US11085998B2

公开(公告)日：2021-08-10

申请号：US16814601

申请日：2020-03-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Keyvan Sayyah ,  Raymond Sarkissian ,  Biqin Huang ,  Pamela R. Patterson

IPC: G01S17/88 ,  G02B6/12 ,  G02B6/122 ,  G01S7/481 ,  G01S7/4911 ,  G01S7/4912 ,  G01S17/10 ,  B60R11/00

Abstract: A photonic edge coupler includes a slab waveguide and a ridge waveguide. The ridge waveguide includes a silicon wire waveguide, which includes a tapered portion. A first end of the slab waveguide is joined to the ridge waveguide at a junction, and a second end of the slab waveguide forms a first facet. The ridge waveguide defines a longitudinal axis that is associated with a direction of a light signal therein. The first facet is angled at less than 90 degrees relative to the longitudinal axis associated with the direction of the light signal therein. The first facet is disposed opposite to a laser facet associated with a laser waveguide. The longitudinal axis of the ridge waveguide defines a first center point, and the laser facet and the associated laser waveguide define a second center point. The second center point is laterally offset from the first center point.

公开(公告)号：US20210124118A1

公开(公告)日：2021-04-29

申请号：US16814601

申请日：2020-03-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Keyvan Sayyah ,  Raymond Sarkissian ,  Biqin Huang ,  Pamela R. Patterson

IPC: G02B6/122 ,  G02B6/12 ,  G01S17/88 ,  G01S7/491

Abstract: A photonic edge coupler includes a slab waveguide and a ridge waveguide. The ridge waveguide includes a silicon wire waveguide, which includes a tapered portion. A first end of the slab waveguide is joined to the ridge waveguide at a junction, and a second end of the slab waveguide forms a first facet. The ridge waveguide defines a longitudinal axis that is associated with a direction of a light signal therein. The first facet is angled at less than 90 degrees relative to the longitudinal axis associated with the direction of the light signal therein. The first facet is disposed opposite to a laser facet associated with a laser waveguide. The longitudinal axis of the ridge waveguide defines a first center point, and the laser facet and the associated laser waveguide define a second center point. The second center point is laterally offset from the first center point.

公开(公告)号：US20190052047A1

公开(公告)日：2019-02-14

申请号：US16018852

申请日：2018-06-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Keyvan Sayyah ,  Pamela R. Patterson ,  Biqin Huang

IPC: H01S5/028 ,  H01S5/022

Abstract: A method of manufacturing a LIDAR chip and applying an anti-reflection (AR) coating to a coupling structure of the LIDAR chip. The coupling structure if formed on a wafer. A pocket is formed in the wafer adjacent the coupling structure. The AR material is deposited on top of the wafer and coupling structure. The AR material is etched to form the AR coating on the coupling structure.

公开(公告)号：US20190018112A1

公开(公告)日：2019-01-17

申请号：US16018730

申请日：2018-06-26

Applicant: GM Global Technology Operations LLC

Inventor： Keyvan Sayyah ,  Oleg Efimov ,  Pamela Patterson ,  Raymond Sarkissian ,  James H. Schaffner ,  Biqin Huang ,  David Hammon

IPC: G01S7/481 ,  H01L31/16 ,  H01L31/0232 ,  H01L23/544 ,  G01S7/491 ,  G01S17/93

Abstract: A chip-scale coherent lidar system includes a photonic chip that includes a light source, a transmit beam coupler to provide an output signal, and a receive beam coupler to receive a received signal based on a reflection of the output signal by a target. The system also includes a transmit beam steering device to transmit the output signal out of the system, and a receive beam steering device to obtain the received signal into the system. A transmit beam curved mirror reflects the output signal from the transmit beam coupler to the transmit beam steering device. A receive beam curved mirror reflects the received signal from the receive beam steering device to the receive beam coupler. The transmit beam curved mirror and the receive beam curved mirror are formed in a substrate that is heterogeneously integrated with the photonic chip.

公开(公告)号：US20190018114A1

公开(公告)日：2019-01-17

申请号：US16020202

申请日：2018-06-27

Applicant: GM Global Technology Operations LLC

Inventor： Pamela R. Patterson ,  Biqin Huang ,  James H. Schaffner ,  Keyvan Sayyah ,  Oleg Efimov ,  Raymond Sarkissian

IPC: G01S7/481 ,  G01S7/491 ,  G01S17/93

Abstract: A lidar system includes a photonic chip including a light source and a transmit beam coupler to provide an output signal for transmission. The output signal is a frequency modulated continuous wave (FMCW) signal. A transmit beam steering device transmits the output signal from the transmit beam coupler of the photonic chip. A receive beam steering device obtains a reflection of the output signal by a target and provides the reflection as a received signal to a receive beam coupler of the photonic chip. The photonic chip, the transmit beam steering device, and the receive beam steering device are heterogeneously integrated into an optical engine.

公开(公告)号：US20190018113A1

公开(公告)日：2019-01-17

申请号：US16018831

申请日：2018-06-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Keyvan Sayyah ,  Oleg Efimov ,  Pamela R. Patterson ,  Raymond Sarkissian ,  James H. Schaffner ,  Biqin Huang ,  David Hammon

IPC: G01S7/481 ,  B81B7/02 ,  H01S5/125 ,  G01S17/02 ,  G02B27/30

Abstract: A LIDAR system, LIDAR chip and method of manufacturing a LIDAR chip. The LIDAR system includes a photonic chip configured to transmit a transmitted light beam and to receive a reflected light beam, a scanner for directing the transmitted light beam towards a direction in space and receiving the reflected light beam from the selected direction, and a fiber-based optical coupler. The photonic chip and the scanner are placed on a semiconductor integrated platform (SIP). The fiber-based optical coupler is placed on top of the photonic chip to optically couple to the photonic chip for directing the a transmitted light beam from the photonic chip to the scanner and for directing a reflected light beam from the scanner to the photonic chip.

公开(公告)号：US11639988B2

公开(公告)日：2023-05-02

申请号：US16814741

申请日：2020-03-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Keyvan Sayyah ,  Raymond Sarkissian ,  Biqin Huang ,  Shuoqin Wang

IPC: G01S7/481 ,  G01S7/4911 ,  G01S7/4912 ,  G01S17/88 ,  G02B6/12 ,  G02B6/122 ,  G01S17/10 ,  G02F1/095 ,  B60R11/00 ,  G02F1/01

Abstract: An integrated photonic circulator is described, an application of which may be deployed on a chip-scale light-detection and ranging (LiDAR) device. The photonic circulator includes a micro-ring resonator waveguide, a heating element, first and second bus waveguides, a magneto-optic substrate, a magneto-optic element, a magnetic ring disposed on a photonic substrate, and a silicon substrate. The first and second bus waveguides are coupled to the micro-ring resonator waveguide, and the micro-ring resonator waveguide is affixed onto a first side of the photonic substrate. The magneto-optic element and the magneto-optic substrate are arranged on the micro-ring resonator waveguide, the magnetic ring is affixed to the magneto-optic substrate, the heating element is affixed to the photonic substrate, the photonic substrate is affixed to the silicon substrate, and the magnetic ring is concentric with the micro-ring resonator.

公开(公告)号：US11500072B2

公开(公告)日：2022-11-15

申请号：US16814575

申请日：2020-03-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Raymond Sarkissian ,  Keyvan Sayyah ,  Biqin Huang ,  Ivan Alvarado ,  Shuoqin Wang

IPC: G01S7/481 ,  G01S7/4911 ,  G01S7/4912 ,  G01S17/88 ,  G02B6/12 ,  G02B6/122 ,  G01S17/10 ,  B60R11/00

Abstract: A photonic circulator deployed on a chip-scale light-detection and ranging (LiDAR) device includes a first arm that includes a first waveguide that is bonded onto a first member at a first bonding region, and a second arm that includes a second waveguide that is bonded onto a second member at a second bonding region. A first thermo-optic phase shifter is arranged on the first member and collocated with the first waveguide, and a second thermo-optic phase shifter is arranged on the second member and collocated with the second waveguide. The magneto-optic material and the first thermo-optic phase shifter of the first member cause a first phase shift in a first light beam travelling through the first waveguide, and the magneto-optic material and the second thermo-optic phase shifter of the second member cause a second phase shift in a second light beam travelling through the second waveguide.

公开(公告)号：US20210124031A1

公开(公告)日：2021-04-29

申请号：US16814726

申请日：2020-03-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Raymond Sarkissian ,  Keyvan Sayyah ,  Shuoqin Wang ,  Biqin Huang ,  Ivan Alvarado

IPC: G01S7/4911 ,  G01S7/481 ,  G01S17/931

Abstract: An architecture for a chip-scale optical phased array-based scanning frequency-modulated continuous wave (FMCW) Light-detection and ranging (LiDAR) device is described. The LiDAR device includes a laser, a transmit optical splitter, an optical circulator, photodetectors, and an optical phased array. The laser, the transmit optical splitter, the optical circulator, the photodetectors, and the optical phased array are arranged as a chip-scale package on a single semiconductor substrate. The laser generates a first light beam that is transmitted to the optical phased array aperture via the transmit optical splitter, the optical circulator, and the optical phased array. A fraction of the first light beam is transmitted to the photodetectors via the transmit optical splitter to serve as the optical local oscillator (LO), the aperture of the optical phased array captures a second light beam that is transmitted to the photodetectors via the optical phased array and the optical circulator.