Patents by Inventor Eberhard Lothar LOECKLIN
Eberhard Lothar LOECKLIN 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).
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Publication number: 20240035887Abstract: A monochromator apparatus for an optical spectrum analyzer (OSA) may include a diffraction grating and a sensor. For calibration of the monochromator, an optical signal may be received and a 0th order diffracted signal and an angle of the 0th order diffracted signal may be detected, where the 0th order diffracted signal is obtained by diffracting the optical signal on the diffraction grating. The angle of the 0th order diffracted signal may be set as a reference angle and a next order diffracted signal and an angle of the next order diffracted signal detected. A wavelength of the next order diffracted signal may be determined based on the reference angle and the other angle of the next order diffracted signal using a look-up table or a grating equation-based computation. The calibration may be performed for each sweep of the OSA, at the beginning of a measurement, periodically, or on-demand.Type: ApplicationFiled: July 25, 2023Publication date: February 1, 2024Applicant: VIAVI SOLUTIONS INC.Inventor: Eberhard Lothar LOECKLIN
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Patent number: 11644346Abstract: A rotation angle encoder apparatus is disclosed. The rotation angle encoder apparatus may comprise a plurality of light sources, a plurality of light detectors, and a plurality of pinions rotatable about a shaft. Each of the pinions may comprises a plurality of teeth and a plurality of gaps. The rotation angle encoder apparatus may comprise a plurality of stacked configurations such that, when the shaft is rotated, transmissivity may be measured to determine or calculate at least one measurement, such as an angle of rotation, position, movement, distance, or other discernable measurement. The rotation angle encoder apparatus with a plurality pinions and associated measurable transmissivities may enable an optical spectrum analyzer to increase wavelength accuracy and improve resolution in optical measurements.Type: GrantFiled: August 12, 2021Date of Patent: May 9, 2023Assignee: VIAVI SOLUTIONS INC.Inventor: Eberhard Lothar Loecklin
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Patent number: 11309960Abstract: A system for measuring linear and non-linear transmission perturbations in optical transmission systems is disclosed. The system may include a processor to help facilitate measurement of non-linear noise at an optical transceiver. The system, for example, may receive a reference correlation of a transmission of a channel of a fiber link, record an optical power spectrum of the channel, and determine a baud rate of the channel. The system may also apply a spectral correlation technique to the channel with a multiple baud rate distance in frequency domain. The system may also calculate a generalized optical signal-to-noise ratio (gOSNR) value based on the spectral correlation technique and the reference correlation. The system may also compare the gOSNR with wavelength division multiplexed (WDM) OSNR measurements to evaluate an amount of non-linear noise contributions.Type: GrantFiled: June 29, 2020Date of Patent: April 19, 2022Assignee: VIAVI SOLUTIONS INC.Inventors: Axel Flettner, Eberhard Lothar Loecklin, Wolfgang Moench
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Publication number: 20210372827Abstract: A rotation angle encoder apparatus is disclosed. The rotation angle encoder apparatus may comprise a plurality of light sources, a plurality of light detectors, and a plurality of pinions rotatable about a shaft. Each of the pinions may comprises a plurality of teeth and a plurality of gaps. The rotation angle encoder apparatus may comprise a plurality of stacked configurations such that, when the shaft is rotated, transmissivity may be measured to determine or calculate at least one measurement, such as an angle of rotation, position, movement, distance, or other discernable measurement. The rotation angle encoder apparatus with a plurality pinions and associated measurable transmissivities may enable an optical spectrum analyzer to increase wavelength accuracy and improve resolution in optical measurements.Type: ApplicationFiled: August 12, 2021Publication date: December 2, 2021Applicant: VIAVI SOLUTIONS INC.Inventor: Eberhard Lothar LOECKLIN
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Patent number: 11118944Abstract: A rotation angle encoder apparatus is disclosed. The rotation angle encoder apparatus may comprise a plurality of light sources, a plurality of light detectors, and a plurality of pinions rotatable about a shaft. Each of the pinions may comprises a plurality of teeth and a plurality of gaps. The rotation angle encoder apparatus may comprise a plurality of stacked configurations such that, when the shaft is rotated, transmissivity may be measured to determine or calculate at least one measurement, such as an angle of rotation, position, movement, distance, or other discernable measurement. The rotation angle encoder apparatus with a plurality pinions and associated measurable transmissivities may enable an optical spectrum analyzer to increase wavelength accuracy and improve resolution in optical measurements.Type: GrantFiled: January 9, 2019Date of Patent: September 14, 2021Assignee: VIAVI SOLUTIONS INC.Inventor: Eberhard Lothar Loecklin
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Publication number: 20200412448Abstract: A system for measuring linear and non-linear transmission perturbations in optical transmission systems is disclosed. The system may include a processor to help facilitate measurement of non-linear noise at an optical transceiver. The system, for example, may receive a reference correlation of a transmission of a channel of a fiber link, record an optical power spectrum of the channel, and determine a baud rate of the channel. The system may also apply a spectral correlation technique to the channel with a multiple baud rate distance in frequency domain. The system may also calculate a generalized optical signal-to-noise ratio (gOSNR) value based on the spectral correlation technique and the reference correlation. The system may also compare the gOSNR with wavelength division multiplexed (WDM) OSNR measurements to evaluate an amount of non-linear noise contributions.Type: ApplicationFiled: June 29, 2020Publication date: December 31, 2020Applicant: VIAVI SOLUTIONS INC.Inventors: Axel FLETTNER, Eberhard Lothar LOECKLIN, Wolfgang MOENCH
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Publication number: 20200217691Abstract: A rotation angle encoder apparatus is disclosed. The rotation angle encoder apparatus may comprise a plurality of light sources, a plurality of light detectors, and a plurality of pinions rotatable about a shaft. Each of the pinions may comprises a plurality of teeth and a plurality of gaps. The rotation angle encoder apparatus may comprise a plurality of stacked configurations such that, when the shaft is rotated, transmissivity may be measured to determine or calculate at least one measurement, such as an angle of rotation, position, movement, distance, or other discernable measurement. The rotation angle to encoder apparatus with a plurality pinions and associated measurable transmissivities may enable an optical spectrum analyzer to increase wavelength accuracy and improve resolution in optical measurements.Type: ApplicationFiled: January 9, 2019Publication date: July 9, 2020Applicant: VIAVI SOLUTIONS INC.Inventor: Eberhard Lothar LOECKLIN