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公开(公告)号：US12038346B2
公开(公告)日：2024-07-16
申请号：US17341261
申请日：2021-06-07
Applicant: VIAVI SOLUTIONS INC.
Inventor： Luis Andre Neves Paiva Fernandes , Robert Matthew Adams , Christopher Russell Wagner , Joshua Benjamin Julius Philipson , Eugene Chan
CPC classification number: G01M11/337 , G02F1/0139
Abstract: According to examples, a system for measuring polarization dependent loss (PDL) for a device-under-test (DUT) may include a tunable laser, a polarization element and a power meter. The tunable laser may emit an optical signal to sweep across an optical band at a constant rate. The polarization element may scramble polarizations states of the optical signal emitted from the tunable laser. The power meter may take power measurements associated with the optical signal emitted from the tunable laser, wherein the power measurements from the power meter are used to determine a maximum insertion loss (IL) and a minimum insertion loss (IL) associated with the device-under-test (DUT). An average insertion loss (IL) and a polarization dependent loss (PDL) for the device-under-test (DUT) may be calculated based on the maximum insertion loss (IL) and the minimum insertion loss (IL) associated with the device-under-test (DUT).
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公开(公告)号：US11326982B2
公开(公告)日：2022-05-10
申请号：US16297328
申请日：2019-03-08
Applicant: VIAVI SOLUTIONS INC.
Inventor： Robert Matthew Adams , Joshua Philipson , Darren Bruce
IPC: G01M11/00 , H01S5/00 , H01S5/0683 , G01R31/26
Abstract: A test instrument is operable to test optical components of a fiber optic network. The test instrument includes a laser having a back-facet monitor. The test instrument measures a performance parameter of an optical component being tested based on optical power of the laser measured by the back-facet monitor. The performance parameter is determined based on optical power measurements that account for drift of the laser.
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公开(公告)号：US12253721B2
公开(公告)日：2025-03-18
申请号：US17443188
申请日：2021-07-22
Applicant: VIAVI Solutions Inc.
Inventor： Jay Gregory Brace , Kevin Cassady , Robert Matthew Adams
Abstract: A microscope may receive a fiber optic connector via a connector adapter that includes an opening and may align a ferrule of the fiber optic connector with the opening of the connector adapter, where the ferrule includes a ferrule endface. The microscope may transmit light onto the ferrule endface and may receive reflected light, as an image of the ferrule endface, with a camera of the microscope. The microscope may determine intensities of brightness of the image and may create a topographical map of the intensities of the brightness of the image. The microscope may determine a radius and an apex of the ferrule endface based on the topographical map and may calculate an apex offset of the ferrule endface based on the radius and the apex of the ferrule endface. The microscope may perform one or more actions based on the apex offset of the ferrule endface.
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公开(公告)号：US10598965B2
公开(公告)日：2020-03-24
申请号：US15011189
申请日：2016-01-29
Applicant: VIAVI SOLUTIONS INC.
Inventor： Joshua Philipson , Chris Wagner , Grant Tessaro , Robert Matthew Adams
Abstract: According to an example, a polarization control system is to manipulate polarization manipulators to output light that achieves a trajectory on a Poincaré sphere that tracks a known trajectory of a polarizer on the Poincaré sphere, in which the trajectory of the output light enables definition of a reference polarization state of the output light. The polarization control system may also manipulate an output polarization manipulator to set the output light to a predefined polarization state based upon the reference polarization state.
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公开(公告)号：US20190277725A1
公开(公告)日：2019-09-12
申请号：US15996136
申请日：2018-06-01
Applicant: VIAVI SOLUTIONS INC.
Inventor： Robert Matthew Adams , Joshua Philipson , Elias Debs , Shauna Peach-Donovan , Jeff Graves
Abstract: A fiber-optic interconnection stabilization apparatus for a measurement system is provided. The apparatus may comprise a main body comprising an enclosure and two openings. The enclosure may encase a fiber-optic cable within the main body in an organized manner. The two openings may fit connecting ends of the fiber-optic cable such that the connecting ends of may be exposed in order to connect two modular components of a measurement system and form a closed measurement loop. The main body, when in a closed configuration, may stabilizes the fiber-optic cable encased within from external conditions, such as mechanical, thermal, or other environmental conditions that may affect measurements.
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Patent Agency Ranking
公开(公告)号：US11668878B2
公开(公告)日：2023-06-06
申请号：US17187348
申请日：2021-02-26
Applicant: VIAVI SOLUTIONS INC.
Inventor： Robert Matthew Adams , Joshua Benjamin Julius Philipson
CPC classification number: G02B6/351 , G02B6/3504 , G02B6/3526 , G02B6/3586 , G02B6/02042 , G02B6/3885
Abstract: An apparatus for providing multicore fiber (OCF) optical switching is disclosed. The apparatus may include an input fiber to receive an optical signal from an optical source. The apparatus may also include an output fiber to receive the optical signal from the input fiber. The apparatus may further include an optical switch element to provide optical switching between the input fiber and the output fiber. In some examples, at least one of the input fiber and the output fiber may be a multicore fiber (MCF), and the optical switching may be performed between at least one core of the input fiber and the output fiber. In some examples, the optical switch element may provide optical switching using a multicore fiber (MCF) optical switching technique, such as a lens offset technique, a rotation-based technique, a tip-tilt technique, or an orientable optical element technique.
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公开(公告)号：US11662269B2
公开(公告)日：2023-05-30
申请号：US17152512
申请日：2021-01-19
Applicant: VIAVI SOLUTIONS INC.
Inventor： Robert Matthew Adams , Joshua Philipson , Elias Debs , Shauna Peach-Donovan , Jeff Graves
CPC classification number: G01M11/33 , G02B6/3897
Abstract: A fiber-optic interconnection stabilization apparatus for a measurement system is provided. The apparatus may comprise a main body comprising an enclosure and two openings. The enclosure may encase a fiber-optic cable within the main body in an organized manner. The two openings may fit connecting ends of the fiber-optic cable such that the connecting ends of may be exposed in order to connect two modular components of a measurement system and form a closed measurement loop. The main body, when in a closed configuration, may stabilizes the fiber-optic cable encased within from external conditions, such as mechanical, thermal, or other environmental conditions that may affect measurements.
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公开(公告)号：US11467059B2
公开(公告)日：2022-10-11
申请号：US17021721
申请日：2020-09-15
Applicant: VIAVI SOLUTIONS INC.
Inventor： Robert Matthew Adams , Joshua Philipson , Chris Wagner , Grant Tessaro
IPC: G01M11/00
Abstract: A test instrument tests an optical component of a fiber optic network. The test instrument determines signal parameters describing pulses to be emitted by lasers of the test instrument to test the optical component, and directly modulates the lasers to repeatedly emit the pulses at different wavelengths on a single fiber optic cable in a time division multiplexing manner. The test instrument triggers powering measurements to coincide with the emitted pulses, and determines performance parameters of the optical component based on the triggered power measurements.
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公开(公告)号：US10801918B2
公开(公告)日：2020-10-13
申请号：US16024227
申请日：2018-06-29
Applicant: VIAVI SOLUTIONS INC.
Inventor： Robert Matthew Adams , Joshua Philipson , Chris Wagner , Grant Tessaro
IPC: G01M11/00
Abstract: A test instrument tests an optical component of a fiber optic network. The test instrument determines signal parameters describing pulses to be emitted by lasers of the test instrument to test the optical component, and directly modulates the lasers to repeatedly emit the pulses at different wavelengths on a single fiber optic cable in a time division multiplexing manner. The test instrument triggers powering measurements to coincide with the emitted pulses, and determines performance parameters of the optical component based on the triggered power measurements.
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公开(公告)号：US12222551B2
公开(公告)日：2025-02-11
申请号：US17903401
申请日：2022-09-06
Applicant: VIAVI SOLUTIONS INC.
Inventor： Driss Touahri , Joshua Benjamin Julius Philipson , Christopher Russell Wagner , Luis Andre Neves Paiva Fernandes , Robert Matthew Adams
Abstract: A variable optical attenuator (VOA) may include an input collimator with an input fiber connected on one side and an output collimator with an output fiber connected on one side, where the collimators are on a same surface of a VOA enclosure. A retroreflector may receive a light beam from the input collimator and reflect the light beam to the output collimator. The VOA may include an attenuation element positioned between the input collimator and the retroreflector and/or another attenuation element positioned between the retroreflector and the output collimator to provide variable attenuation to the light beam. The attenuation elements may be moved to set an attenuation level by one or more adjustment elements such as a miniature motor. The attenuation element may include a gradient index (GRIN) element, a polarizer, a neutral density filter, or a wavelength tunable filter.
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