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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
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.
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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).
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公开(公告)号：US20220074573A1
公开(公告)日：2022-03-10
申请号：US17470916
申请日：2021-09-09
Applicant: Apple Inc.
Inventor： Mark Alan Arbore , Matthew A. Terrel
Abstract: Configurations for a photonics assembly design and methods for mitigating coherent noise thereof are disclosed. The photonics assembly may include a set of light sources, an optical subsystem that may include a set of optical elements, and a diffusing element. The light emitted by the set of light sources may be different wavelengths and the light may be de-cohered by a phase shifter before being received by the set of optical elements. The diffusing element may be moveable and may be capable of repeating the same positions or set of positions for each beam of light emitted by the set of light sources. By combining the coherent noise mitigation techniques of the moveable diffusing element and the de-cohered light, the photonics system may provide an illumination profile with a specific spatial profile and angular profile on the sample that allows reliable measurement of the sample and coherent noise mitigation.
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公开(公告)号：US11243115B2
公开(公告)日：2022-02-08
申请号：US17030328
申请日：2020-09-23
Applicant: Apple Inc.
Inventor： Mark Alan Arbore , Gary Shambat , Matthew A. Terrel
Abstract: Systems and methods for determining one or more properties of a sample are disclosed. The systems and methods disclosed can be capable of measuring along multiple locations and can reimage and resolve multiple optical paths within the sample. The system can be configured with one-layer or two-layers of optics suitable for a compact system. The optics can be simplified to reduce the number and complexity of the coated optical surfaces, et al. on effects, manufacturing tolerance stack-up problems, and interference-based spectroscopic errors. The size, number, and placement of the optics can enable multiple simultaneous or non-simultaneous measurements at various locations across and within the sample. Moreover, the systems can be configured with an optical spacer window located between the sample and the optics, and methods to account for changes in optical paths due to inclusion of the optical spacer window are disclosed.
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公开(公告)号：US20210302313A1
公开(公告)日：2021-09-30
申请号：US17346390
申请日：2021-06-14
Applicant: Apple Inc.
Inventor： Mark Alan Arbore , Matthew A. Terrel
Abstract: An illuminator/collector assembly can deliver incident light to a sample and collect return light returning from the sample. A sensor can measure ray intensities as a function of ray position and ray angle for the collected return light. A ray selector can select a first subset of rays from the collected return light at the sensor that meet a first selection criterion. In some examples, the ray selector can aggregate ray intensities into bins, each bin corresponding to rays in the collected return light that traverse within the sample an estimated optical path length within a respective range of optical path lengths. A characterizer can determine a physical property of the sample, such as absorptivity, based on the ray intensities, ray positions, and ray angles for the first subset of rays. Accounting for variations in optical path length traversed within the sample can improve accuracy.
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Patent Agency Ranking
公开(公告)号：US10690591B2
公开(公告)日：2020-06-23
申请号：US15751454
申请日：2016-08-29
Applicant: Apple Inc.
Inventor： Robert Chen , Trent D. Ridder , Miikka M. Kangas , David I. Simon , Matthew A. Terrel
Abstract: Methods and systems for measurement time distribution for referencing schemes are disclosed. The disclosed methods and systems can be capable of dynamically changing the measurement time distribution based on the sample signal, reference signal, noise levels, and SNR. The methods and systems can be configured with a plurality of measurement states, including a sample measurement state, reference measurement state, and dark measurement state. In some examples, the measurement time distribution scheme can be based on the operating wavelength, the measurement location at the sampling interface, and/or targeted SNR. Examples of the disclosure further include systems and methods for measuring the different measurement states concurrently. Moreover, the systems and methods can include a high-frequency detector to eliminate or reduce decorrelated noise fluctuations that can lower the SNR.
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公开(公告)号：US10274426B2
公开(公告)日：2019-04-30
申请号：US15717651
申请日：2017-09-27
Applicant: Apple Inc.
Inventor： Mark Alan Arbore , Matthew A. Terrel
Abstract: An illuminator/collector assembly can deliver incident light to a sample and collect return light returning from the sample. A sensor can measure ray intensities as a function of ray position and ray angle for the collected return light. A ray selector can select a first subset of rays from the collected return light at the sensor that meet a first selection criterion. In some examples, the ray selector can aggregate ray intensities into bins, each bin corresponding to rays in the collected return light that traverse within the sample an estimated optical path length within a respective range of optical path lengths. A characterizer can determine a physical property of the sample, such as absorptivity, based on the ray intensities, ray positions, and ray angles for the first subset of rays. Accounting for variations in optical path length traversed within the sample can improve accuracy.
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公开(公告)号：US20250109989A1
公开(公告)日：2025-04-03
申请号：US18829173
申请日：2024-09-09
Applicant: Apple Inc.
Inventor： Mark A. Arbore , Thomas C. Greening , Matthew A. Terrel , Trent D. Ridder
Abstract: Various embodiments disclosed herein describe photonic integrated circuits and associated optical measurement systems. The photonic integrated circuit may be configured to simultaneously output light of different wavelengths from different outputs of a multiplexer. A switch network, which may include a multiplexing photonic switch, may be used to selectively route the different wavelengths to a common set of launch groups, from which the light may be emitted from the photonic integrated circuit.
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公开(公告)号：US20250067418A1
公开(公告)日：2025-02-27
申请号：US18942202
申请日：2024-11-08
Applicant: Apple Inc.
Inventor： Mark Alan Arbore , Matthew A. Terrel
Abstract: Configurations for a photonics assembly design and methods for mitigating coherent noise thereof are disclosed. The photonics assembly may include a set of light sources, an optical subsystem that may include a set of optical elements, and a diffusing element. The light emitted by the set of light sources may be different wavelengths and the light may be de-cohered by a phase shifter before being received by the set of optical elements. The diffusing element may be moveable and may be capable of repeating the same positions or set of positions for each beam of light emitted by the set of light sources. By combining the coherent noise mitigation techniques of the moveable diffusing element and the de-cohered light, the photonics system may provide an illumination profile with a specific spatial profile and angular profile on the sample that allows reliable measurement of the sample and coherent noise mitigation.
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公开(公告)号：US11852318B2
公开(公告)日：2023-12-26
申请号：US17470916
申请日：2021-09-09
Applicant: Apple Inc.
Inventor： Mark Alan Arbore , Matthew A. Terrel
IPC: G02B27/48 , G02B5/02 , G01N21/01 , F21V14/00 , F21V3/00 , F21V5/00 , F21V5/04 , G02B27/30 , G02B19/00
CPC classification number: F21V14/00 , F21V3/00 , F21V5/007 , F21V5/043 , G02B19/0057 , G02B27/30 , G02B27/48 , G01N21/01
Abstract: Configurations for a photonics assembly design and methods for mitigating coherent noise thereof are disclosed. The photonics assembly may include a set of light sources, an optical subsystem that may include a set of optical elements, and a diffusing element. The light emitted by the set of light sources may be different wavelengths and the light may be de-cohered by a phase shifter before being received by the set of optical elements. The diffusing element may be moveable and may be capable of repeating the same positions or set of positions for each beam of light emitted by the set of light sources. By combining the coherent noise mitigation techniques of the moveable diffusing element and the de-cohered light, the photonics system may provide an illumination profile with a specific spatial profile and angular profile on the sample that allows reliable measurement of the sample and coherent noise mitigation.
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