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：US20220091338A1

公开(公告)日：2022-03-24

申请号：US17386297

申请日：2021-07-27

Applicant: Apple Inc.

Inventor： Yongming Tu ,  Alfredo Bismuto

IPC: G02B6/293 ,  G02B6/12 ,  G02B6/124

Abstract: Configurations for a tunable Echelle grating are disclosed. The tunable Echelle grating may include an output waveguide centered in a waveguide array, with input waveguides on both sides of the output waveguide. A metal tuning pad may be located over the slab waveguide and may be heated to induce a temperature change in the slab waveguide. By increasing the temperature of the propagation region of the slab waveguide, the index of refraction may shift, thus causing the peak wavelength of the channel to shift. This may result in an optical component capable of multiplexing multiple light sources in an energy efficient manner while maintaining a small form factor.

公开(公告)号：US20240094466A1

公开(公告)日：2024-03-21

申请号：US17949096

申请日：2022-09-20

Applicant: Apple Inc.

Inventor： Mark A. Arbore ,  Mohsen Kamandar Dezfouli ,  Yongming Tu ,  Jeremy D. Witmer ,  Huiyang Deng ,  Alfredo Bismuto ,  Petr Markov

IPC: G02B6/124

CPC classification number: G02B6/124 ,  G02B2006/12107

Abstract: Configurations for an optical system used for guiding light and reducing back-reflection back in an output waveguide is disclosed. The optical system may include an output waveguide defined in a slab waveguide. The output waveguide may terminate before an output side of the slab waveguide, which may reduce the back-reflection of light from the output side back into the output waveguide. The output side may define an optical element that may steer the output light. The optical element may collimate the output light, cause the output light to converge, or cause the output light to diverge.

公开(公告)号：US11852865B2

公开(公告)日：2023-12-26

申请号：US17386362

申请日：2021-07-27

Applicant: Apple Inc.

Inventor： Yongming Tu ,  Alfredo Bismuto

IPC: G02B6/12

CPC classification number: G02B6/12014 ,  G02B6/12016

Abstract: Configurations for an optical system with phase shifting elements are disclosed. The optical system may include a first waveguide that provides light to a second waveguide, which may be a slab waveguide. A phase shifting element may be disposed on the slab waveguide and may be heated to induce a temperature change in the slab waveguide. By increasing the temperature of the propagation region of the slab waveguide, the index of refraction of the propagation region of the slab waveguide may shift, thus causing the index of refraction of light propagating through the propagation region to shift, thus shifting the phase of the light. This may result in an optical component capable of phase shifting light for reducing coherent noise while being energy efficient and maintaining a small form factor.

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：US20230087293A1

公开(公告)日：2023-03-23

申请号：US17949079

申请日：2022-09-20

Applicant: Apple Inc.

Inventor： Jeremy D. Witmer ,  Mark A. Arbore ,  Yongming Tu ,  Huiyang Deng ,  Mohsen Kamandar Dezfouli ,  Alfredo Bismuto ,  Petr Markov

IPC: G02B6/12 ,  G02B6/122

Abstract: Configurations for an optical system used for guiding light and reducing back-reflection back in an output waveguide is disclosed. The optical system may include an output waveguide defined in a slab waveguide. The output waveguide may terminate before an output side of the slab waveguide, which may reduce the back-reflection of light from the output side back into the output waveguide. The output side may define an optical element that may steer the output light. The optical element may collimate the output light, cause the output light to converge, or cause the output light to diverge.

公开(公告)号：US11500154B1

公开(公告)日：2022-11-15

申请号：US17073393

申请日：2020-10-18

Applicant: Apple Inc.

Inventor： Yi-Kuei Wu ,  Yongming Tu ,  Alfredo Bismuto ,  Andrea Trita ,  Yangyang Liu

IPC: G02B6/122 ,  G02B6/12 ,  G02B27/10

Abstract: A waveguide structure and a method for splitting light is described. The method may include optically coupling a first waveguide and a second waveguide, where the optical coupling may be wavelength insensitive. The widths of the first and second waveguides may be non-adiabatically varying and the optical coupling may be asymmetric between the first and second waveguides. A gap between the first and second waveguides may also be varied non-adiabatically and the gap may depend on the widths of the first and second waveguides. The optical coupling between the first and second waveguides may also occur in the approximate wavelength range of 800 nanometers to 1700 nanometers.

公开(公告)号：US20220091334A1

公开(公告)日：2022-03-24

申请号：US17386362

申请日：2021-07-27

Applicant: Apple Inc.

Inventor： Yongming Tu ,  Alfredo Bismuto

IPC: G02B6/12

Abstract: Configurations for an optical system with phase shifting elements are disclosed. The optical system may include a first waveguide that provides light to a second waveguide, which may be a slab waveguide. A phase shifting element may be disposed on the slab waveguide and may be heated to induce a temperature change in the slab waveguide. By increasing the temperature of the propagation region of the slab waveguide, the index of refraction of the propagation region of the slab waveguide may shift, thus causing the index of refraction of light propagating through the propagation region to shift, thus shifting the phase of the light. This may result in an optical component capable of phase shifting light for reducing coherent noise while being energy efficient and maintaining a small form factor.