Patents Assigned to Viavi Solutions Inc.
  • Patent number: 10928579
    Abstract: A sheet including a reflector having a first surface, a second surface opposite the first surface, and a third surface; a first selective light modulator layer external to of the first surface of the reflector; and a second selective light modulator layer external to the second surface of the reflector; wherein the third surface of the reflector is open is disclosed. A method of making a sheet is also disclosed.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: February 23, 2021
    Assignee: VIAVI SOLUTIONS INC.
    Inventors: Johannes Seydel, Mark Tevis, Kangning Liang, Jaroslaw Zieba, Paul Thomas Kohlmann, Jeffrey James Kuna
  • Patent number: 10928274
    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.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: February 23, 2021
    Assignee: VIAVI SOLUTIONS INC.
    Inventors: Robert Matthew Adams, Joshua Philipson, Elias Debs, Shauna Peach-Donovan, Jeff Graves
  • Patent number: 10931817
    Abstract: A test instrument connectable to a network to provide copper impairment testing and remediation in a digital subscriber line (DSL) service is provided. The test instrument may comprise a port connectable to a test point in a network. The test instrument may also comprise a processing circuit to perform tests in the following categories: (i) shorts, grounds, and opens, (ii) true length, (iii) balance, and (iv) series fault, wherein the combination of these tests may determine copper impairment. Once tests are conducted, one or more remediation recommendations may be provided based at least in part on failure in one of the test categories. The test results and remediation recommendations may then be presented at an output, such as a display at a test instrument or user device.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: February 23, 2021
    Assignee: VIAVI SOLUTIONS INC.
    Inventors: Brian Bowman, Reynald Dupuis, Paul Snead
  • Patent number: 10928309
    Abstract: A device may receive a master data set for a first spectroscopic model; receive a target data set for a target population associated with the first spectroscopic model to update the first spectroscopic model; generate a training data set that includes the master data set and first data from the target data set; generate a validation data set that includes second data from the target data set and not the master data set; generate, using cross-validation and using the training data set and the validation data set, a second spectroscopic model that is an update of the first spectroscopic model; and provide the second spectroscopic model.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: February 23, 2021
    Assignee: VIAVI Solutions Inc.
    Inventors: Chang Meng Hsiung, Lan Sun
  • Patent number: 10928570
    Abstract: An optical filter, a sensor device including the optical filter, and a method of fabricating the optical filter are provided. The optical filter includes one or more dielectric layers and one or more metal layers stacked in alternation. The metal layers are intrinsically protected by the dielectric layers. In particular, the metal layers have tapered edges that are protectively covered by one or more of the dielectric layers.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: February 23, 2021
    Assignee: VIAVI Solutions Inc.
    Inventors: Georg J. Ockenfuss, Tim Gustafson, Jeffrey James Kuna, Markus Bilger, Richard A. Bradley, Jr.
  • Patent number: 10924366
    Abstract: Techniques for providing visualization and analysis of performance data are disclosed. In one particular exemplary embodiment, the techniques may be realized as a system for providing visualization and analysis of performance data. The system may comprise one or more processors communicatively coupled to a mobile communications network. The one or more processors may be configured to monitor data traffic within the mobile communications network. The one or more processors may further be configured to collect network performance data associated with the mobile communications network. The one or more processors may also be configured to provide user-selectable options to a user at a mobile device for viewing the network performance data. The one or more processors may further be configured to process the network performance data based on the user-selectable options identified by the user.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: February 16, 2021
    Assignee: VIAVI Solutions Inc.
    Inventors: Edoardo Rizzi, Steven Dodge, Sameh Yamany
  • Patent number: 10924321
    Abstract: A test instrument may include a transmitter configured to transmit signals to a unit under test, a receiver configured to receive signals from the unit under test, and a controller configured to generate a transmitter compensation filter by (i) transmitting, with the transmitter, complex multi-sine signals over a first plurality of observed frequencies within a predetermined baseband frequency range, (ii) estimating a first plurality of frequency responses that compensate for in-phase and quadrature (IQ) imbalance at the first plurality of observed frequencies within the predetermined baseband frequency range, and (iii) determining, using the first plurality of frequency responses, a transmitter polynomial surface, and to compensate, using the transmitter compensation filter, at least one of the signals to be transmitted by the transmitter to reduce IQ imbalance in the transmitted signals, including using the transmitter polynomial surface to calculate a frequency response that reduces the IQ imbalance in the
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: February 16, 2021
    Assignee: VIAVI SOLUTIONS INC.
    Inventors: Julio Vergel, Daniel Moore, Raja Balu
  • Patent number: 10924799
    Abstract: A cable network test instrument for isolating a source of noise in a cable network system is disclosed.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: February 16, 2021
    Assignee: VIAVI SOLUTIONS, INC.
    Inventors: Thomas R. Renken, Gregory W. Massey
  • Patent number: 10920310
    Abstract: Reactive sputter deposition method and system are disclosed, in which a catalyst gas, such as water vapor, is used to increase the overall deposition rate substantially without compromising formation of a dielectric compound layer and its optical transmission. Addition to the sputtering or reactive gas of the catalyst gas can result in an increase of a deposition rate of the dielectric oxide film substantially without increasing an optical absorption of the film.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: February 16, 2021
    Assignee: VIAVI Solutions Inc.
    Inventor: Georg J. Ockenfuss
  • Publication number: 20210041905
    Abstract: A system for determine presence or quality of an external timing device is provided. The system may include a circuit (e.g., in a field-programmable gate array (FPGA)) having an input, an oscillator, an edge detector, a bit counter, and a calculator element. In some examples, the input may receive an input signal under test. The oscillator may advance a timer at a known rate to facilitate generation of clock samples for the input signal under test. The edge detector may measure edges of the input signal under test based on the clock samples. The circuit may include at least one bit counter to store a count associated with the measured edges for a shorter interval timer period and a longer interval timer period. The calculator element may determine presence or quality of an external timing device based on the count.
    Type: Application
    Filed: August 9, 2019
    Publication date: February 11, 2021
    Applicant: VIAVI SOLUTIONS INC.
    Inventor: Jonathan Paul MILTON
  • Patent number: 10914961
    Abstract: An optical filter may include a substrate. The optical filter may include a set of alternating high refractive index layers and low refractive index layers disposed onto the substrate to polarization beam split incident light. The set of alternating high refractive index layers and low refractive index may layers may be disposed such that a first polarization of the incident light with a spectral range of less than approximately 800 nanometers (nm) is reflected by the optical filter and a second polarization of the incident light with a spectral range of greater than approximately 800 nm is passed through by the optical filter. The high refractive index layers may be hydrogenated silicon (Si:H). The low refractive index layers may be silicon dioxide (SiO2).
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: February 9, 2021
    Assignee: VIAVI Solutions Inc.
    Inventors: Karen Denise Hendrix, Scott Rowlands
  • Patent number: 10914655
    Abstract: In some examples, an optical time-domain reflectometer (OTDR) device may include a laser source to emit a laser beam into a device under test (DUT), and a connection port to connect the OTDR device to a first end of the DUT, where the OTDR device may be designated a first OTDR device. A sensor display generator may determine a length of the DUT, receive, from a second OTDR device connectable to a second opposite end of the DUT, and over the DUT, OTDR information acquired by the second OTDR device in a direction from the second OTDR device towards the first OTDR device, and ascertain, based on acquisition by the first OTDR device, further OTDR information in a direction from the first OTDR device towards the second OTDR device. The sensor display generator may generate a bi-directional combined schematic display that includes relevant optical events with respect to the DUT.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: February 9, 2021
    Assignee: VIAVI SOLUTIONS INC.
    Inventors: Charlène Roux, Olivier Receveur
  • Publication number: 20210033759
    Abstract: An optical device, such as a diffuser, can include a substrate; and a diffuser surface, in which the diffuser surface has an index of refraction greater than about 1.8. A method of making and using the optical device is also disclosed.
    Type: Application
    Filed: July 28, 2020
    Publication date: February 4, 2021
    Applicant: VIAVI SOLUTIONS INC.
    Inventors: Tasso R. M. SALES, George Michael Morris
  • Publication number: 20210032473
    Abstract: A thin film structure including a reflector layer; and a hybrid layer including an organic colored material and at least one of an organic filler and an inorganic filler; wherein a concentration of the at least one of an organic filler or an inorganic filler is in a range of from about 3 wt. % to about 30 wt. %. A method of making a thin film structure is also disclosed.
    Type: Application
    Filed: October 21, 2020
    Publication date: February 4, 2021
    Applicant: VIAVI SOLUTIONS INC.
    Inventors: Vladimir RAKSHA, Joe Garcia, Paul Kohlmann, Alberto Argoitia, Carole Thoraval, Robert Oberti
  • Publication number: 20210036775
    Abstract: Disclosed are an apparatus and testing methods for performing testing operations over multiple types of links and through multiple potential points of failure to segment sources of problems, which may relate to reported or actual instances of service disruption in a network communication environment. The apparatus may perform service layer testing directly via an optical link, in addition to via Ethernet service layer testing. The apparatus may further conduct tests on other layers as well, including the physical layer, the network layer, and the link layer. To facilitate efficient testing, the apparatus may integrate programmable workflow profiles that specify tests to be conducted, and may interface with a cloud platform for sharing results of the tests, providing end-to-end testing of various components and types of links (whether optical or electrical, including wired and wireless links). Results of the tests may provide guidance to resolve detected problems.
    Type: Application
    Filed: July 31, 2019
    Publication date: February 4, 2021
    Applicant: VIAVI SOLUTIONS INC.
    Inventors: Hans Joerg WOLF, Reynald DUPUIS
  • Patent number: 10901127
    Abstract: A bandpass filter may include a set of layers. The set of layers may include a first subset of layers. The first subset of layers may include hydrogenated germanium (Ge:H) with a first refractive index. The set of layers may include a second subset of layers. The second subset of layers may include a material with a second refractive index. The second refractive index may be less than the first refractive index.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: January 26, 2021
    Assignee: VIAVI Solutions Inc.
    Inventors: James Switzer, III, Georg J. Ockenfuss
  • Patent number: 10903590
    Abstract: A memory connector retention apparatus is disclosed. The memory connector retention apparatus may comprise a retention body having a top portion, a bottom portion, two side portions, an end portion, and a fastening portion. In an example, the top portion and the bottom portion may be open, forming a cavity in the retention body to allow a memory connector and a memory module to be positioned within the retention body. The fastening portion may allow the retention body to secure the memory module within the memory connector by keeping memory snap arms of the memory connector fixed in a closed configuration when the fastening portion is in a tightened position. In an example, the fastening portion may comprise a hole such that a tightening element, e.g., a screw or peg, may fit into the hole.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: January 26, 2021
    Assignee: VIAVI SOLUTIONS INC.
    Inventor: June Bonifacio Pineda
  • Patent number: 10899930
    Abstract: An asymmetric pigment including a first Fabry-Perot structure; and a second Fabry-Perot structure; wherein the first Fabry-Perot structure and the second Fabry-Perot structure have a similar hue angle within +/?45 degrees is disclosed. Other asymmetric pigments are also disclosed as well as methods of making the disclosed pigments.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: January 26, 2021
    Assignee: VIAVI SOLUTIONS INC.
    Inventor: Cornelis Jan Delst
  • Patent number: 10892922
    Abstract: A test device for detecting and measuring distance to passive intermodulation (PIM) is disclosed. The test device may comprise a receiver to receive a signal from a test point of a distributed cell site comprising a remote radio head (RRH) and a baseband unit (BBU) separated and connected via an optical feeder. The test device may also comprise a processor to detect passive intermodulation (PIM) and measure distance to the PIM (internal or external). For example, the processor may replace downlink IQ data in the signal with two-tone waveform IQ data, transmit the two-tone waveform IQ data to the RRH, and to monitor uplink spectrum to detect PIM, where the uplink spectrum may comprise uplink IQ data from the RRH. The processor may also perform uplink spectrum analysis using radio frequency (RF) monitoring, measure a time delay for the two-tone waveform and the detected PIM, and calculate a distance to the PIM based on the time delay.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: January 12, 2021
    Assignee: VIAVI SOLUTIONS INC.
    Inventors: Se Young Eun, Young-Hwan Kim
  • Publication number: 20210003472
    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.
    Type: Application
    Filed: September 15, 2020
    Publication date: January 7, 2021
    Applicant: VIAVI SOLUTIONS INC.
    Inventors: Robert Matthew ADAMS, Joshua PHILIPSON, Chris WAGNER, Grant TESSARO