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：US20190018139A1

公开(公告)日：2019-01-17

申请号：US15957974

申请日：2018-04-20

Applicant: GM Global Technology Operations LLC

Inventor： Keyvan Sayyah ,  Raymond Sarkissian ,  Oleg Efimov ,  Pamela R. Patterson

IPC: G01S17/32 ,  G01S17/93 ,  G01S7/491 ,  G01S7/481 ,  G01S17/00

Abstract: A chip-scale coherent lidar system includes a master oscillator integrated on a chip to simultaneously provide a signal for transmission and a local oscillator (LO) signal. The system also includes a beam steering device to direct an output signal obtained from the signal for transmission out of the system, and a combiner on the chip to combine the LO signal and a return signal resulting from a reflection of the output signal by a target. One or more photodetectors obtain a result of interference between the LO signal and the return signal to determine information about the target.

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.