Patents by Inventor Georg Rudolph

Georg Rudolph 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: 20210075507
    Abstract: An apparatus for mitigating polarization dependent loss (PDL) in an optical signal-to-noise ratio (OSNR) of a modulated optical signal is disclosed. The apparatus may comprise a spectrum analyzer to measure an optical power spectrum of a modulated optical signal. The apparatus may also comprise a measuring unit to select a first portion of the modulated optical signal and a second portion of the modulated optical signal, where each of the first and second portions of the modulated optical signals may include an independent noise distribution indicative of PDL, and measure a time-varying parameter of the first and second portions. The apparatus may also include a signal processor to PDL in an OSNR by transforming any elliptical polarization associated with the independent noise distribution into a ball polarization, determining a correlation between time-varying parameters of the first and second portions, and calculating a PDL mitigated OSNR.
    Type: Application
    Filed: September 17, 2020
    Publication date: March 11, 2021
    Applicant: VIAVI SOLUTIONS INC.
    Inventor: Georg Rudolph
  • Patent number: 10812183
    Abstract: An apparatus for mitigating polarization dependent loss (PDL) in an optical signal-to-noise ratio (OSNR) of a modulated optical signal is disclosed. The apparatus may comprise a spectrum analyzer to measure an optical power spectrum of a modulated optical signal. The apparatus may also comprise a measuring unit to select a first portion of the modulated optical signal and a second portion of the modulated optical signal, where each of the first and second portions of the modulated optical signals may include an independent noise distribution indicative of PDL, and measure a time-varying parameter of the first and second portions. The apparatus may also include a signal processor to PDL in an OSNR by transforming any elliptical polarization associated with the independent noise distribution into a ball polarization, determining a correlation between time-varying parameters of the first and second portions, and calculating a PDL mitigated OSNR.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: October 20, 2020
    Assignee: VIAVI SOLUTIONS INC.
    Inventor: Georg Rudolph
  • Publication number: 20200266887
    Abstract: An apparatus for mitigating polarization dependent loss (PDL) in an optical signal-to-noise ratio (OSNR) of a modulated optical signal is disclosed. The apparatus may comprise a spectrum analyzer to measure an optical power spectrum of a modulated optical signal. The apparatus may also comprise a measuring unit to select a first portion of the modulated optical signal and a second portion of the modulated optical signal, where each of the first and second portions of the modulated optical signals may include an independent noise distribution indicative of PDL, and measure a time-varying parameter of the first and second portions. The apparatus may also include a signal processor to PDL in an OSNR by transforming any elliptical polarization associated with the independent noise distribution into a ball polarization, determining a correlation between time-varying parameters of the first and second portions, and calculating a PDL mitigated OSNR.
    Type: Application
    Filed: February 15, 2019
    Publication date: August 20, 2020
    Applicant: VIAVI SOLUTIONS INC.
    Inventor: Georg RUDOLPH
  • Patent number: 9142937
    Abstract: A lasing wavelength of a laser diode is determined by applying a forward current to the p-n junction of the laser diode and measuring a voltage across the p-n junction. The lasing wavelength can be determined by performing a simple wavelength calibration of the laser diode. This allows one to stabilize the lasing wavelength, and also to use the laser diode as a reference wavelength source.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: September 22, 2015
    Assignee: JDS Uniphase Corporation
    Inventors: Eberhard Löcklin, Georg Rudolph, Jörg Stooss
  • Publication number: 20150185078
    Abstract: A lasing wavelength of a laser diode is determined by applying a forward current to the p-n junction of the laser diode and measuring a voltage across the p-n junction. The lasing wavelength can be determined by performing a simple wavelength calibration of the laser diode. This allows one to stabilize the lasing wavelength, and also to use the laser diode as a reference wavelength source.
    Type: Application
    Filed: March 6, 2015
    Publication date: July 2, 2015
    Inventors: Eberhard LÖCKLIN, Georg RUDOLPH, Jörg STOOSS
  • Patent number: 8976826
    Abstract: A lasing wavelength of a laser diode is determined by applying a forward current to the p-n junction of the laser diode and measuring a voltage across the p-n junction. The lasing wavelength can be determined by performing a simple wavelength calibration of the laser diode. This allows one to stabilize the lasing wavelength, and also to use the laser diode as a reference wavelength source.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: March 10, 2015
    Assignee: JDS Uniphase Corporation
    Inventors: Eberhard Löcklin, Georg Rudolph, Jörg Stooss
  • Patent number: 7756369
    Abstract: A method and apparatus is disclosed for measurement and monitoring of in-band optical signal to noise ratio (OSNR). A two channel optical spectrum analyzer (OSA) is advantageously applied in acquiring wavelength division multiplex (WDM) signal data after it has been split according to polarization, then deriving the in-band OSNR from acquired data due to its narrow bandwidth, selective spectral shape, and capability to analyze two components of a polarized signal simultaneously. The in-band OSNR can be measured without interrupting optical transmission traffic in the network.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: July 13, 2010
    Assignee: Acterna LLC
    Inventors: Georg Rudolph, Eberhard Loecklin
  • Publication number: 20080124076
    Abstract: A method and apparatus is disclosed for measurement and monitoring of in-band optical signal to noise ratio (OSNR). A two channel optical spectrum analyzer (OSA) is advantageously applied in acquiring wavelength division multiplex (WDM) signal data after it has been split according to polarization, then deriving the in-band OSNR from acquired data due to its narrow bandwidth, selective spectral shape, and capability to analyze two components of a polarized signal simultaneously. The in-band OSNR can be measured without interrupting optical transmission traffic in the network.
    Type: Application
    Filed: November 29, 2007
    Publication date: May 29, 2008
    Applicant: ACTERNA LLC
    Inventors: Georg Rudolph, Eberhard Loecklin
  • Patent number: 6188447
    Abstract: A frequency diversity system for use in mobile reception of television and RF signals in the meter or decimeter wavelength, such as for use with a mobile television having a first receiver, an additional receiver and a control and analysis circuit. The additional receiver detects all incoming frequencies corresponding to a preset program and switches the main receiver to an incoming frequency of a higher quality. The receiver is able to identify the frequencies corresponding to the desired program through a transmitter identification code, which is added to each signal. This code is usually a VPS identification signal. The control and analysis circuit compares the incoming frequencies to the frequency of the signal transmitted by the television receiver to determine the highest quality signal. In order to accelerate the process, the system processes local position coordinates of the television so that the frequencies analyzed are only those expected within the coverage area of the television.
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: February 13, 2001
    Assignee: Fuba Automotive GmbH
    Inventors: Georg Rudolph, Michael Daginnus, Ralf Bösche
  • Patent number: 5949498
    Abstract: An antenna diversity system for the mobile reception of VHF and UHF television signals in different frequency ranges that are separated by gaps by a mobile television receiver connected to a plurality of antennas through an antenna switch, wherein the output of the receiver includes a color decoder for producing color and luminance video signals. There is provided a separate frequency diversity control circuit connected to the receiver for testing the UHF and VHF signals received by the antennas and for switching the antennas to receive the best quality video and audio signals. The diversity circuit tests and reverses the antenna switch within the blanking gap of the horizontal synchronization lines of the TV signal. Memory circuits are coupled to the color decoder of the receiver for receiving at least one synchronization line of the video signal from the color decoder wherein either the complete video signal or corresponding color and luminance signals thereof are continuously read line by line.
    Type: Grant
    Filed: August 29, 1997
    Date of Patent: September 7, 1999
    Assignee: Fuba Automotive GmbH
    Inventor: Georg Rudolph
  • Patent number: 4996699
    Abstract: A frequency divider circuit, especially for use in frequency synthesizers, in which the frequency divider is provided with whole-number division factors, permits intergrator, differentiator and/or phase accumulations to be used to generate the successive values of the division factor which average, over time to allow fractional frequency division.
    Type: Grant
    Filed: July 11, 1989
    Date of Patent: February 26, 1991
    Assignee: Wandel & Goltermann GmbH & Co.
    Inventor: Georg Rudolph
  • Patent number: 4697156
    Abstract: In a generator whose frequency can be set digitally and connected in a phase-locked loop (PLL) with a frequency divider whose frequency divider ratio is periodically changed, the sum of the phase errors, which are the phase deviations of the individual frequency-divider delivered pulses from the phase of the reference frequency, is calculated and each pulse for which the phase-error sum exceeds a predetermined value is delayed by a time period corresponding to this value before being fed to the phase meter or phase detector of the phase-locked loop. As a result, any drift or oscillatory fluctuations of the voltage-controlled oscillator (VCO) control voltage are confined to substantially high frequencies and only very weak subharmonic components, and the oscillatory fluctuations can be filtered out easily by a low-pass filter between the phase detector or phase meter and the control-voltage input of the VCO.
    Type: Grant
    Filed: December 12, 1986
    Date of Patent: September 29, 1987
    Assignee: Wandel u. Goltermann GmbH & Co.
    Inventor: Georg Rudolph
  • Patent number: 4114406
    Abstract: A laundry washing machine which comprises a driven laundry holder rotatably mounted within a separately rotatable driven washing liquid container, the respective axes of rotation of the holder and the container intersecting each other.
    Type: Grant
    Filed: April 8, 1977
    Date of Patent: September 19, 1978
    Assignee: U.S. Philips Corporation
    Inventors: Alexandre Horowitz, Georg Rudolph Wolter Kymmell, Johannes Krijne, Bernard Joseph Beusink, deceased, by Friedrich Jacobus De Haan, administrator