公开(公告)号：US20250067932A1

公开(公告)日：2025-02-27

申请号：US18945011

申请日：2024-11-12

Applicant: Google LLC

Inventor： Liming Wang ,  Ryohei Urata ,  Jan Petykiewicz ,  Jill Berger

IPC: G02B6/124 ,  G02B6/12 ,  G02B6/122 ,  G02B6/13 ,  H01L23/00

Abstract: A photonic integrated circuit chip includes a substrate and a wafer on the substrate. The wafer itself includes a photonic grating coupler with a taper portion and grating features. The grating features extend from the taper portion toward the substrate.

公开(公告)号：US20230314709A1

公开(公告)日：2023-10-05

申请号：US18203328

申请日：2023-05-30

Applicant: Google LLC

Inventor： Liming Wang ,  Ryohei Urata ,  Jan Petykiewicz ,  Jill Berger

IPC: G02B6/124 ,  G02B6/122 ,  G02B6/13 ,  H01L23/00

CPC classification number: G02B6/124 ,  G02B6/1228 ,  G02B6/13 ,  H01L24/16 ,  G02B2006/12107

Abstract: A photonic integrated circuit chip includes a substrate and a wafer on the substrate. The wafer itself includes a photonic grating coupler with a taper portion and grating features. The grating features extend from the taper portion toward the substrate.

公开(公告)号：US12184334B2

公开(公告)日：2024-12-31

申请号：US18138371

申请日：2023-04-24

Applicant: Google LLC

Inventor： Liming Wang ,  Xiang Zhou

IPC: H04B10/50 ,  G02B6/42 ,  H04B10/40 ,  H04B10/572

Abstract: An optical transceiver may include an optical transmitter and an optical receiver. The optical transmitter and receiver may each include a grid including one or more lanes spaced apart. Each lane may correspond to a predetermined optical signal, or wavelength. The optical transmitter may include one or more sets of lasers to output one or more optical signals corresponding to the grid. Each set of laser may output a set of optical signals. Each set of lasers and, therefore, each set of optical signals may have a different passband. For example, the multiplexing and/or demultiplexing architecture may have a wide passband for the first set of optical signals and a narrow passband for the second set of optical signals. The narrow passband may be determined based on the space between two wider passbands.

公开(公告)号：US11726260B2

公开(公告)日：2023-08-15

申请号：US17036827

申请日：2020-09-29

Applicant: Google LLC

Inventor： Liming Wang ,  Ryohei Urata ,  Jan Petykiewicz ,  Jill Berger

IPC: G02B6/12 ,  G02B6/13 ,  G02B6/124 ,  G02B6/122 ,  H01L23/00

CPC classification number: G02B6/124 ,  G02B6/1228 ,  G02B6/13 ,  H01L24/16 ,  G02B2006/12107 ,  H01L2224/16225

Abstract: A photonic integrated circuit chip includes a substrate and a wafer on the substrate. The wafer itself includes a photonic grating coupler with a taper portion and grating features. The grating features extend from the taper portion toward the substrate.

公开(公告)号：US20220271841A1

公开(公告)日：2022-08-25

申请号：US17339400

申请日：2021-06-04

Applicant: Google LLC

Inventor： Liming Wang ,  Xiang Zhou

IPC: H04B10/50 ,  H04B10/40 ,  H04B10/572

Abstract: An optical transceiver may include an optical transmitter and an optical receiver. The optical transmitter and receiver may each include a grid including one or more lanes spaced apart. Each lane may correspond to a predetermined optical signal, or wavelength. The optical transmitter may include one or more sets of lasers to output one or more optical signals corresponding to the grid. Each set of laser may output a set of optical signals. Each set of lasers and, therefore, each set of optical signals may have a different passband. For example, the multiplexing and/or demultiplexing architecture may have a wide passband for the first set of optical signals and a narrow passband for the second set of optical signals. The narrow passband may be determined based on the space between two wider passbands.

公开(公告)号：US12169304B2

公开(公告)日：2024-12-17

申请号：US18203328

申请日：2023-05-30

Applicant: Google LLC

Inventor： Liming Wang ,  Ryohei Urata ,  Jan Petykiewicz ,  Jill Berger

IPC: G02B6/12 ,  G02B6/122 ,  G02B6/124 ,  G02B6/13 ,  H01L23/00

Abstract: A photonic integrated circuit chip includes a substrate and a wafer on the substrate. The wafer itself includes a photonic grating coupler with a taper portion and grating features. The grating features extend from the taper portion toward the substrate.

公开(公告)号：US20230261752A1

公开(公告)日：2023-08-17

申请号：US18138371

申请日：2023-04-24

Applicant: Google LLC

Inventor： Liming Wang ,  Xiang Zhou

IPC: H04B10/50 ,  H04B10/40 ,  H04B10/572

CPC classification number: H04B10/506 ,  H04B10/40 ,  H04B10/572 ,  G02B6/4249

Abstract: An optical transceiver may include an optical transmitter and an optical receiver. The optical transmitter and receiver may each include a grid including one or more lanes spaced apart. Each lane may correspond to a predetermined optical signal, or wavelength. The optical transmitter may include one or more sets of lasers to output one or more optical signals corresponding to the grid. Each set of laser may output a set of optical signals. Each set of lasers and, therefore, each set of optical signals may have a different passband. For example, the multiplexing and/or demultiplexing architecture may have a wide passband for the first set of optical signals and a narrow passband for the second set of optical signals. The narrow passband may be determined based on the space between two wider passbands.

公开(公告)号：US20250012664A1

公开(公告)日：2025-01-09

申请号：US18218411

申请日：2023-07-05

Applicant: Google LLC

Inventor： Liming Wang ,  Xiang Zhou ,  Cedric Fung Lam

IPC: G01M11/00

Abstract: Methods and apparatus for monitoring chirp in a modulated light beam. The modulated light is passed through a variable dispersion element or “VDE”, and the light from the variable dispersion element is detected to yield a signal. A parameter which represents the strength of modulation in the light after passage through the VDE such as the peak intensity of the modulated light is measured as the VDE is controlled to vary the applied dispersion. The chip is determined from the variation of the parameter with dispersion, such as from the dispersions at which the parameter is at minima. The method can be applied to beams modulated by common digital transmitters used in optical communication systems.

公开(公告)号：US11671177B2

公开(公告)日：2023-06-06

申请号：US17339400

申请日：2021-06-04

Applicant: Google LLC

Inventor： Liming Wang ,  Xiang Zhou

IPC: H04B10/572 ,  H04B10/50 ,  H04B10/40 ,  G02B6/42

CPC classification number: H04B10/506 ,  H04B10/40 ,  H04B10/572 ,  G02B6/4249

Abstract: An optical transceiver may include an optical transmitter and an optical receiver. The optical transmitter and receiver may each include a grid including one or more lanes spaced apart. Each lane may correspond to a predetermined optical signal, or wavelength. The optical transmitter may include one or more sets of lasers to output one or more optical signals corresponding to the grid. Each set of laser may output a set of optical signals. Each set of lasers and, therefore, each set of optical signals may have a different passband. For example, the multiplexing and/or demultiplexing architecture may have a wide passband for the first set of optical signals and a narrow passband for the second set of optical signals. The narrow passband may be determined based on the space between two wider passbands.

公开(公告)号：US20220381975A1

公开(公告)日：2022-12-01

申请号：US17330512

申请日：2021-05-26

Applicant: Google LLC

Inventor： Lieven Verslegers ,  Ryohei Urata ,  Mohammad Sotoodeh ,  Liming Wang

IPC: G02B6/124 ,  G02B6/34 ,  H04B10/40

Abstract: A photonic integrated circuit (PIC) includes one or more couplers to interface a light source with the PIC, a splitter directly coupled to the one or more couplers at a coupling point of the PIC, a modulator to receive light from the couplers, and a connecting waveguide to connect the splitter to the modulator. The waveguide may be a rib waveguide. The PIC may be integrated with devices such as a CWDM or a PSM device, and may provide improved performance and lower attention for high optical power applications.