Light detection and ranging (lidar) sensor system including seed modulation module

    公开(公告)号:US11921236B1

    公开(公告)日:2024-03-05

    申请号:US18121967

    申请日:2023-03-15

    CPC classification number: G01S7/484 G01S7/4861 G01S17/931

    Abstract: A light detection and ranging (lidar) system for a vehicle may include an input optical path, a first optical path, a plurality of second optical paths, a first optical amplifier, and a plurality of second optical amplifiers. The input optical path may be configured to receive a beam from a laser source. The first optical path and the plurality of second optical paths may be respectively branched from the input optical path. The first optical amplifier may be coupled to the first optical path and configured to output a local oscillator (LO) signal. The plurality of second optical amplifiers may be respectively coupled to the plurality of second optical paths, one of the plurality of second optical amplifiers being selectively turned on to modulate the beam received through a second optical path and output a modulated optical signal of the beam.

    Silicon Photonics Device for LIDAR Sensor and Method for Fabrication

    公开(公告)号:US20240061178A1

    公开(公告)日:2024-02-22

    申请号:US18497717

    申请日:2023-10-30

    CPC classification number: G02B6/136 G01S7/4816 G02B2006/12107

    Abstract: A structure of a silicon photonics device for LIDAR includes a first insulating structure and a second insulating structure disposed above one or more etched silicon structures overlying a substrate member. A metal layer is disposed above the first insulating structure without a prior deposition of a diffusion barrier and adhesion layer. A thin insulating structure is disposed above the second insulating structure. A first configuration of the metal layer, the first insulating structure and the one or more etched silicon structures forms a free-space coupler. A second configuration of the thin insulating structure above the second insulating structure forms an edge coupler.

    Switchable coherent pixel array for frequency modulated continuous wave light detection and ranging

    公开(公告)号:US11880000B2

    公开(公告)日:2024-01-23

    申请号:US17889202

    申请日:2022-08-16

    CPC classification number: G01S7/4818 G01S7/4811 G01S7/491 G01S17/931

    Abstract: A LIDAR transceiver includes a source input, coherent cells, and an optical switch. The optical switch is configured to switchably couple the source input to the coherent cells. At least one of the coherent cells includes an input port, an optical antenna, and a splitter. The input port is coupled to the optical switch and the splitter is coupled between the input port and the optical antenna. The splitter is configured to split a received portion of a laser signal into a local oscillator signal and a transmit signal, where the transmit signal is emitted through the optical antenna. A reflection of the transmit signal is received through the optical antenna as a reflected signal, where the splitter is further configured to output a return signal that is a portion of the reflected signal.

    Silicon photonics device for LIDAR sensor and method for fabrication

    公开(公告)号:US11835765B2

    公开(公告)日:2023-12-05

    申请号:US18051337

    申请日:2022-10-31

    Abstract: A structure of a silicon photonics device for LIDAR includes a first insulating structure and a second insulating structure disposed above one or more etched silicon structures overlying a substrate member. A metal layer is disposed above the first insulating structure without a prior deposition of a diffusion barrier and adhesion layer. A thin insulating structure is disposed above the second insulating structure. A first configuration of the metal layer, the first insulating structure and the one or more etched silicon structures forms a free-space coupler. A second configuration of the thin insulating structure above the second insulating structure forms an edge coupler.

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