公开(公告)号：US20230062578A1

公开(公告)日：2023-03-02

申请号：US17827281

申请日：2022-05-27

Applicant: Apple Inc.

Inventor： Mohamed Mahmoud ,  Yi-Kuei Wu ,  Lucia Gan

IPC: G02B6/293

Abstract: Configurations for an optical device used for light splitting and wavelength locking are disclosed. The optical device may be a two by three coupler with a first waveguide coupled to a second waveguide, and a third waveguide coupled to the second waveguide. The first and third waveguides may receive input light and optically couple light to the second waveguide. The output signals of the first, second, and third waveguides may have a constant phase difference from one another over a broadband wavelength range, which may allow for phase unwrapping. By phase unwrapping the output signals over an FSR and performing further phase unwrapping over the broadband wavelength range, a continuous signal may be produced and used to sequentially lock each wavelength of light emitted by light sources over the broadband wavelength range.

公开(公告)号：US11971574B2

公开(公告)日：2024-04-30

申请号：US17725418

申请日：2022-04-20

Applicant: Apple Inc.

Inventor： Yi-Kuei Wu ,  Lucia Gan

IPC: G02B6/12 ,  G02B6/122 ,  G02B6/293

CPC classification number: G02B6/12007 ,  G02B6/1228 ,  G02B6/29344 ,  G02B6/2938

Abstract: Configurations for an interferometric device used for multiplexing and de-multiplexing light are disclosed. The interferometric device may include a first input waveguide, a second input waveguide, an interferometric waveguide, and an output waveguide. A fundamental mode of light may be launched into the first and second input waveguides, and the interferometric waveguide may receive the fundamental mode and generate a higher order mode of light, where the two modes of light may be superimposed while propagating through the interferometric waveguide. The two modes of light may be received at an output waveguide that collapses the two modes into a single mode. The light propagating through the interferometric device may be used for increasing optical power even though the wavelengths of light may be different from one another. Additionally, the interferometric device may reduce coherent noise.

公开(公告)号：US20230324286A1

公开(公告)日：2023-10-12

申请号：US18121427

申请日：2023-03-14

Applicant: Apple Inc.

Inventor： Jason S. Pelc ,  Mark A. Arbore ,  Matthew A. Terrel ,  Thomas C. Greening ,  Yongming Tu ,  Lucia Gan

IPC: G01N21/31

CPC classification number: G01N21/31

Abstract: Various embodiments disclosed herein describe optical measurement systems for characterizing a sample. The optical measurement systems may selectively emit light from different numbers of launch groups, and may include a multi-stage optical switch network that may be controlled to route light to a desired number of launch groups. The optical measurement systems may further measure light using a corresponding number of detector groups. The optical measurement systems may perform measurements using a plurality of different wavelengths, where different groups of these wavelengths may be measured using different numbers of launch groups (as well as corresponding detector groups).

公开(公告)号：US20230110382A1

公开(公告)日：2023-04-13

申请号：US17725418

申请日：2022-04-20

Applicant: Apple Inc.

Inventor： Yi-Kuei Wu ,  Lucia Gan

IPC: G02B6/12 ,  G02B6/122

Abstract: Configurations for an interferometric device used for multiplexing and de-multiplexing light are disclosed. The interferometric device may include a first input waveguide, a second input waveguide, an interferometric waveguide, and an output waveguide. A fundamental mode of light may be launched into the first and second input waveguides, and the interferometric waveguide may receive the fundamental mode and generate a higher order mode of light, where the two modes of light may be superimposed while propagating through the interferometric waveguide. The two modes of light may be received at an output waveguide that collapses the two modes into a single mode. The light propagating through the interferometric device may be used for increasing optical power even though the wavelengths of light may be different from one another. Additionally, the interferometric device may reduce coherent noise.