公开(公告)号：US20240094592A1

公开(公告)日：2024-03-21

申请号：US18526269

申请日：2023-12-01

Applicant: Apple Inc.

Inventor： Yi-Kuei Wu ,  Jason Pelc ,  Mark Alan Arbore ,  Thomas C. Greening ,  Matthew A. Terrel ,  Yongming Tu ,  Mohamed Mahmoud

IPC: G02F1/21

CPC classification number: G02F1/21 ,  G02F1/212

Abstract: Disclosed herein is an integrated photonics device including an on-chip wavelength stability monitor. The wavelength stability monitor may include one or more interferometric components, such as Mach-Zehnder interferometers and can be configured to select among the output signals from the interferometric components for monitoring the wavelength emitted by a corresponding photonic component, such as a light source. The selection may be based on a slope of the output signal and in some examples may correspond to a working zone at or around a wavelength or wavelength range. In some examples, the interferometric components can be configured with different phase differences such that the corresponding working zones have different wavelengths. In some examples, the slopes of the output signals may be weighted based on the steepness of the slope and all of the output signals may include information for wavelength locking the measured wavelength to the target wavelength.

公开(公告)号：US20240069248A1

公开(公告)日：2024-02-29

申请号：US18119591

申请日：2023-03-09

Applicant: Apple Inc.

Inventor： Mohamed Mahmoud ,  Huiyang Deng ,  Satyarth Suri ,  Jason S. Pelc ,  Peter L. Chang

IPC: G02B1/118 ,  G02B1/02 ,  G02B6/122

CPC classification number: G02B1/118 ,  G02B1/02 ,  G02B6/122 ,  G02B2006/12061

Abstract: Anti-reflective optical structures are disclosed. The anti-reflective optical structures include sub-wavelength structures in order to produce one or more index of refraction gradients within the anti-reflective optical structures. The one or more index of refraction gradients can reduce reflection of light over a broad band of wavelengths.

公开(公告)号：US11835836B1

公开(公告)日：2023-12-05

申请号：US17015974

申请日：2020-09-09

Applicant: Apple Inc.

Inventor： Yi-Kuei Wu ,  Jason Pelc ,  Mark Alan Arbore ,  Thomas C. Greening ,  Matthew A. Terrel ,  Yongming Tu ,  Mohamed Mahmoud

IPC: G02F1/21

CPC classification number: G02F1/21 ,  G02F1/212

Abstract: Disclosed herein is an integrated photonics device including an on-chip wavelength stability monitor. The wavelength stability monitor may include one or more interferometric components, such as Mach-Zehnder interferometers and can be configured to select among the output signals from the interferometric components for monitoring the wavelength emitted by a corresponding photonic component, such as a light source. The selection may be based on a slope of the output signal and in some examples may correspond to a working zone at or around a wavelength or wavelength range. In some examples, the interferometric components can be configured with different phase differences such that the corresponding working zones have different wavelengths. In some examples, the slopes of the output signals may be weighted based on the steepness of the slope and all of the output signals may include information for wavelength locking the measured wavelength to the target wavelength.

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：US11320718B1

公开(公告)日：2022-05-03

申请号：US16998816

申请日：2020-08-20

Applicant: Apple Inc.

Inventor： Mohamed Mahmoud ,  Alfredo Bismuto ,  Mark Alan Arbore

IPC: G02F1/313

Abstract: A cantilever beam waveguide for a silicon photonics device may be formed in a device layer (e.g., a silicon device layer) of a silicon photonics device (e.g., a chip) and may be configured to bend to align the cantilever beam waveguide or a portion thereof with one or more additional components of the silicon photonics device or another device, including output couplers, optical sources, and waveguides.