Patents by Inventor Robert Matthew ADAMS
Robert Matthew ADAMS has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20240077678Abstract: 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.Type: ApplicationFiled: September 6, 2022Publication date: March 7, 2024Applicant: VIAVI SOLUTIONS INC.Inventors: Driss TOUAHRI, Joshua Benjamin Julius Philipson, Christopher Russell Wagner, Luis Andre Neves Paiva Fernandes, Robert Matthew Adams
-
Patent number: 11899193Abstract: A microscope may receive a fiber optic connector via a connector adapter of the microscope, wherein the connector adapter includes an opening and a shaped reflective surface surrounding the opening. The microscope may align a ferrule of the fiber optic connector with the opening of the connector adapter of the microscope, wherein the ferrule includes a ferrule endface. The microscope may transmit light onto the shaped reflective surface and may receive reflected light from the ferrule endface and with a camera of the microscope.Type: GrantFiled: July 22, 2021Date of Patent: February 13, 2024Assignee: VIAVI Solutions Inc.Inventors: Kevin Cassady, Jay Gregory Brace, Robert Matthew Adams
-
Patent number: 11668878Abstract: 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.Type: GrantFiled: February 26, 2021Date of Patent: June 6, 2023Assignee: VIAVI SOLUTIONS INC.Inventors: Robert Matthew Adams, Joshua Benjamin Julius Philipson
-
Patent number: 11662269Abstract: 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.Type: GrantFiled: January 19, 2021Date of Patent: May 30, 2023Assignee: VIAVI SOLUTIONS INC.Inventors: Robert Matthew Adams, Joshua Philipson, Elias Debs, Shauna Peach-Donovan, Jeff Graves
-
Publication number: 20220390322Abstract: 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).Type: ApplicationFiled: June 7, 2021Publication date: December 8, 2022Applicant: VIAVI SOLUTIONS INC.Inventors: Luis Andre Neves Paiva FERNANDES, Robert Matthew ADAMS, Christopher Russell WAGNER, Joshua Benjamin Julius PHILIPSON, Eugene CHAN
-
Patent number: 11467059Abstract: 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.Type: GrantFiled: September 15, 2020Date of Patent: October 11, 2022Assignee: VIAVI SOLUTIONS INC.Inventors: Robert Matthew Adams, Joshua Philipson, Chris Wagner, Grant Tessaro
-
Publication number: 20220291492Abstract: A microscope may receive a fiber optic connector via a connector adapter of the microscope, wherein the connector adapter includes an opening and a shaped reflective surface surrounding the opening. The microscope may align a ferrule of the fiber optic connector with the opening of the connector adapter of the microscope, wherein the ferrule includes a ferrule endface. The microscope may transmit light onto the shaped reflective surface and may receive reflected light from the ferrule endface and with a camera of the microscope.Type: ApplicationFiled: July 22, 2021Publication date: September 15, 2022Inventors: Kevin CASSADY, Jay Gregory BRACE, Robert Matthew ADAMS
-
Publication number: 20220291455Abstract: 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.Type: ApplicationFiled: July 22, 2021Publication date: September 15, 2022Inventors: Jay Gregory BRACE, Kevin CASSADY, Robert Matthew ADAMS
-
Publication number: 20220276444Abstract: 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.Type: ApplicationFiled: February 26, 2021Publication date: September 1, 2022Applicant: VIAVI SOLUTIONS INC.Inventors: Robert Matthew ADAMS, Joshua Benjamin Julius PHILIPSON
-
Patent number: 11326982Abstract: 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.Type: GrantFiled: March 8, 2019Date of Patent: May 10, 2022Assignee: VIAVI SOLUTIONS INC.Inventors: Robert Matthew Adams, Joshua Philipson, Darren Bruce
-
Publication number: 20210148787Abstract: 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.Type: ApplicationFiled: January 19, 2021Publication date: May 20, 2021Applicant: VIAVI SOLUTIONS INC.Inventors: Robert Matthew Adams, Joshua Philipson, Elias Debs, Shauna Peach-Donovan, Jeff Graves
-
Patent number: 11002632Abstract: A system for measuring a polarization extinction ratio (PER) using a reference master test jumper (MTJ) is disclosed. The system may include an optical source to transmit an optical signal via an optical fiber. The system may also include a device under test (DUT) communicatively coupled to the optical source via the optical fiber to receive the optical signal from the optical source. The system may also include an optical measurement component communicatively coupled to the device under test (DUT). In some examples, the optical fiber may be configured or initialized to be a reference master test jumper (MTJ) that minimizes inherent polarization extinction ratio (PER) of the optical fiber when measuring a polarization extinction ratio (PER) during a measurement action.Type: GrantFiled: June 28, 2019Date of Patent: May 11, 2021Assignee: VIAVI SOLUTIONS INC.Inventors: Robert Matthew Adams, Joshua Benjamin Julius Philipson
-
Patent number: 10928274Abstract: 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.Type: GrantFiled: June 1, 2018Date of Patent: February 23, 2021Assignee: VIAVI SOLUTIONS INC.Inventors: Robert Matthew Adams, Joshua Philipson, Elias Debs, Shauna Peach-Donovan, Jeff Graves
-
Publication number: 20210003472Abstract: 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.Type: ApplicationFiled: September 15, 2020Publication date: January 7, 2021Applicant: VIAVI SOLUTIONS INC.Inventors: Robert Matthew ADAMS, Joshua PHILIPSON, Chris WAGNER, Grant TESSARO
-
Publication number: 20200408637Abstract: A system for measuring a polarization extinction ratio (PER) using a reference master test jumper (MTJ) is disclosed. The system may include an optical source to transmit an optical signal via an optical fiber. The system may also include a device under test (DUT) communicatively coupled to the optical source via the optical fiber to receive the optical signal from the optical source. The system may also include an optical measurement component communicatively coupled to the device under test (DUT). In some examples, the optical fiber may be configured or initialized to be a reference master test jumper (MTJ) that minimizes inherent polarization extinction ratio (PER) of the optical fiber when measuring a polarization extinction ratio (PER) during a measurement action.Type: ApplicationFiled: June 28, 2019Publication date: December 31, 2020Applicant: VIAVI SOLUTIONS INC.Inventors: Robert Matthew ADAMS, Joshua Benjamin Julius PHILIPSON
-
Patent number: 10801918Abstract: 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.Type: GrantFiled: June 29, 2018Date of Patent: October 13, 2020Assignee: VIAVI SOLUTIONS INC.Inventors: Robert Matthew Adams, Joshua Philipson, Chris Wagner, Grant Tessaro
-
Patent number: 10598965Abstract: 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.Type: GrantFiled: January 29, 2016Date of Patent: March 24, 2020Assignee: VIAVI SOLUTIONS INC.Inventors: Joshua Philipson, Chris Wagner, Grant Tessaro, Robert Matthew Adams
-
Publication number: 20190277724Abstract: 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.Type: ApplicationFiled: June 29, 2018Publication date: September 12, 2019Applicant: VIAVI SOLUTIONS INC.Inventors: Robert Matthew ADAMS, Joshua PHILIPSON, Chris WAGNER, Grant TESSARO
-
Publication number: 20190277725Abstract: 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.Type: ApplicationFiled: June 1, 2018Publication date: September 12, 2019Applicant: VIAVI SOLUTIONS INC.Inventors: Robert Matthew Adams, Joshua Philipson, Elias Debs, Shauna Peach-Donovan, Jeff Graves
-
Publication number: 20190280457Abstract: 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.Type: ApplicationFiled: March 8, 2019Publication date: September 12, 2019Applicant: VIAVI SOLUTIONS INC.Inventors: Robert Matthew ADAMS, Joshua PHILIPSON, Darren BRUCE