Patents by Inventor Erich Gottwald
Erich Gottwald 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: 20200235821Abstract: An heterodyne apparatus and method for measuring performance parameters of a coherent optical receiver at RF frequencies is disclosed. Two coherent lights are launched into signal and LO ports of the receiver with an optical frequency offset f. One of the lights is modulated in amplitude at a test modulation frequency F. COR performance parameters are determined by comparing two frequency components of the COR output. CMRR is determined based on a strength of a direct detection spectral line at the modulation frequency relative to that of spectrally-shifted lines at (F±f). GDV information is obtained by modulating one of the lights at two phase-locked frequencies, such as F and 2F, and comparing phases of two time-domain traces corresponding to frequency components of the COR output signal at the two frequencies.Type: ApplicationFiled: April 2, 2020Publication date: July 23, 2020Inventors: Bernd-Harald Horst Jurgen Rohde, Erich Gottwald
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Patent number: 10644806Abstract: An heterodyne apparatus and method for measuring performance parameters of a coherent optical receiver at RF frequencies is disclosed. Two coherent lights are launched into signal and LO ports of the receiver with an optical frequency offset f. One of the lights is modulated in amplitude at a test modulation frequency F. COR performance parameters are determined by comparing two frequency components of the COR output. CMRR is determined based on a strength of a direct detection spectral line at the modulation frequency relative to that of spectrally-shifted lines at (F±f). GDV information is obtained by modulating one of the lights at two phase-locked frequencies, such as F and 2F, and comparing phases of two time-domain traces corresponding to frequency components of the COR output signal at the two frequencies.Type: GrantFiled: January 25, 2019Date of Patent: May 5, 2020Assignee: Elenion Technologies, LLCInventors: Bernd-Harald Horst Jurgen Rohde, Erich Gottwald
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Publication number: 20190334628Abstract: An heterodyne apparatus and method for measuring performance parameters of a coherent optical receiver at RF frequencies is disclosed. Two coherent lights are launched into signal and LO ports of the receiver with an optical frequency offset f. One of the lights is modulated in amplitude at two phase-locked modulation frequencies F1 and F2. COR performance parameters are determined by comparing two frequency components of the COR output. The group delay variation (GDV) information is obtained by comparing phases of two time-domain traces corresponding to frequency components of the COR output signal at the two modulation frequencies shifted by the optical frequency offset f.Type: ApplicationFiled: July 5, 2019Publication date: October 31, 2019Inventors: Bernd-Harald Horst Jurgen Rohde, Erich Gottwald
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Patent number: 10389451Abstract: An heterodyne apparatus and method for measuring performance parameters of a coherent optical receiver at RF frequencies is disclosed. Two coherent lights are launched into signal and LO ports of the receiver with an optical frequency offset f. One of the lights is modulated in amplitude at two phase-locked modulation frequencies F1 and F2. COR performance parameters are determined by comparing two frequency components of the COR output. The group delay variation (GDV) information is obtained by comparing phases of two time-domain traces corresponding to frequency components of the COR output signal at the two modulation frequencies shifted by the optical frequency offset f.Type: GrantFiled: September 4, 2018Date of Patent: August 20, 2019Assignee: Elenion Technologies, LLCInventors: Bernd-Harald Horst Jurgen Rohde, Erich Gottwald
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Publication number: 20190190616Abstract: An heterodyne apparatus and method for measuring performance parameters of a coherent optical receiver at RF frequencies is disclosed. Two coherent lights are launched into signal and LO ports of the receiver with an optical frequency offset f. One of the lights is modulated in amplitude at a test modulation frequency F. COR performance parameters are determined by comparing two frequency components of the COR output. CMRR is determined based on a strength of a direct detection spectral line at the modulation frequency relative to that of spectrally-shifted lines at (F±f). GDV information is obtained by modulating one of the lights at two phase-locked frequencies, such as F and 2F, and comparing phases of two time-domain traces corresponding to frequency components of the COR output signal at the two frequencies.Type: ApplicationFiled: January 25, 2019Publication date: June 20, 2019Inventors: Bernd-Harald Horst Jurgen Rohde, Erich Gottwald
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Patent number: 10305596Abstract: A method for data processing of an optical network unit is provided, the method comprising the steps of receiving a configuration information at the optical network unit, adjusting a light signal to a wavelength or wavelength range indicated by the configuration information, demodulating an incoming optical signal by means of the light signal, mixing the demodulated incoming optical signal with a signal generated by an oscillator and generating a modulated optical upstream signal modulating the light signal by means of a software radio, so that the resulting optical upstream frequency can be shifted with respect to the frequency of the local oscillator by a programmable amount. Furthermore, an according device and a communication system are suggested comprising at least one such device.Type: GrantFiled: September 7, 2012Date of Patent: May 28, 2019Assignee: Xieon Networks S.à.r.l.Inventors: Erich Gottwald, Harald Rohde, Thomas Treyer
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Patent number: 10218437Abstract: An heterodyne apparatus and method for measuring performance parameters of a coherent optical receiver at RF frequencies is disclosed. Two coherent lights are launched into signal and LO ports of the receiver with an optical frequency offset f. One of the lights is modulated in amplitude at a test modulation frequency F. COR performance parameters are determined by comparing two frequency components of the COR output. CMRR is determined based on a strength of a direct detection spectral line at the modulation frequency relative to that of spectrally-shifted lines at (F±f). GDV information is obtained by modulating one of the lights at two phase-locked frequencies, such as F and 2F, and comparing phases of two time-domain traces corresponding to frequency components of the COR output signal at the two frequencies.Type: GrantFiled: October 4, 2017Date of Patent: February 26, 2019Assignee: Elenion Technologies, LLCInventors: Bernd-Harald Horst Jurgen Rohde, Erich Gottwald
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Publication number: 20180375588Abstract: An heterodyne apparatus and method for measuring performance parameters of a coherent optical receiver at RF frequencies is disclosed. Two coherent lights are launched into signal and LO ports of the receiver with an optical frequency offset f. One of the lights is modulated in amplitude at two phase-locked modulation frequencies F1 and F2. COR performance parameters are determined by comparing two frequency components of the COR output. The group delay variation (GDV) information is obtained by comparing phases of two time-domain traces corresponding to frequency components of the COR output signal at the two modulation frequencies shifted by the optical frequency offset f.Type: ApplicationFiled: September 4, 2018Publication date: December 27, 2018Inventors: Bernd-Harald Horst Jurgen Rohde, Erich Gottwald
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Patent number: 10097279Abstract: An heterodyne apparatus and method for measuring performance parameters of a coherent optical receiver at RF frequencies is disclosed. Two coherent lights are launched into signal and LO ports of the receiver with an optical frequency offset f. One of the lights is modulated in amplitude at two phase-locked modulation frequencies F1 and F2. COR performance parameters are determined by comparing two frequency components of the COR output. The group delay variation (GDV) information is obtained by comparing phases of two time-domain traces corresponding to frequency components of the COR output signal at the two modulation frequencies shifted by the optical frequency offset f.Type: GrantFiled: October 4, 2017Date of Patent: October 9, 2018Assignee: Elenion Technologies, LLCInventors: Bernd-Harald Horst Jurgen Rohde, Erich Gottwald
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Publication number: 20180048386Abstract: An heterodyne apparatus and method for measuring performance parameters of a coherent optical receiver at RF frequencies is disclosed. Two coherent lights are launched into signal and LO ports of the receiver with an optical frequency offset f. One of the lights is modulated in amplitude at a test modulation frequency F. COR performance parameters are determined by comparing two frequency components of the COR output. CMRR is determined based on a strength of a direct detection spectral line at the modulation frequency relative to that of spectrally-shifted lines at (F±f). GDV information is obtained by modulating one of the lights at two phase-locked frequencies, such as F and 2F, and comparing phases of two time-domain traces corresponding to frequency components of the COR output signal at the two frequencies.Type: ApplicationFiled: October 4, 2017Publication date: February 15, 2018Inventors: Bernd-Harald Horst Jurgen Rohde, Erich Gottwald
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Publication number: 20180034554Abstract: An heterodyne apparatus and method for measuring performance parameters of a coherent optical receiver at RF frequencies is disclosed. Two coherent lights are launched into signal and LO ports of the receiver with an optical frequency offset f. One of the lights is modulated in amplitude at two phase-locked modulation frequencies F1 and F2. COR performance parameters are determined by comparing two frequency components of the COR output. The group delay variation (GDV) information is obtained by comparing phases of two time-domain traces corresponding to frequency components of the COR output signal at the two modulation frequencies shifted by the optical frequency offset f.Type: ApplicationFiled: October 4, 2017Publication date: February 1, 2018Inventors: Bernd-Harald Horst Jurgen Rohde, Erich Gottwald
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Patent number: 9823540Abstract: An optical IQ modulator (IQM) including two parallel Mach-Zehnder modulators (MZM1, MZM2) generates single sideband data signals. A control unit (18) generates additional optical single sideband pilot signals (PS1, PS2) positioned in a lower and a higher sideband respectively, and also further pilot signals (PS3, PS4) in both sidebands. A IQ modulator output signal (MOS) converted into electrical monitoring signals (MOS) and monitored. A control unit (18) selects control signals (CS12, CS3, CS4) and controls the IQ modulator via its bias ports (6, 7, 8) till the power transfer functions (PTF) of the Mach-Zehnder modulators (MZM1, MZM2) and the phase difference (??) between their output signals is optimized.Type: GrantFiled: March 3, 2014Date of Patent: November 21, 2017Assignee: Xieon Networks S.a.r.l.Inventors: Erich Gottwald, Harald Rohde
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Patent number: 9806822Abstract: An heterodyne apparatus and method for measuring performance parameters of a coherent optical receiver at RF frequencies is disclosed. Two coherent lights are launched into signal and LO ports of the receiver with an optical frequency offset f. One of the lights is modulated in amplitude at two phase-locked modulation frequencies F1 and F2. COR performance parameters are determined by comparing two frequency components of the COR output. The group delay variation (GDV) information is obtained by comparing phases of two time-domain traces corresponding to frequency components of the COR output signal at the two modulation frequencies shifted by the optical frequency offset f.Type: GrantFiled: July 7, 2016Date of Patent: October 31, 2017Assignee: Elenion Technologies, LLCInventors: Bernd-Harald Horst Jurgen Rohde, Erich Gottwald
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Patent number: 9806806Abstract: An heterodyne apparatus and method for measuring performance parameters of a coherent optical receiver at RF frequencies is disclosed. Two coherent lights are launched into signal and LO ports of the receiver with an optical frequency offset f. One of the lights is modulated in amplitude at a test modulation frequency F. COR performance parameters are determined by comparing two frequency components of the COR output. CMRR is determined based on a strength of a direct detection spectral line at the modulation frequency relative to that of spectrally-shifted lines at (F±f). GDV information is obtained by modulating one of the lights at two phase-locked frequencies, such as F and 2F, and comparing phases of two time-domain traces corresponding to frequency components of the COR output signal at the two frequencies.Type: GrantFiled: July 7, 2016Date of Patent: October 31, 2017Assignee: Elenion Technologies, LLCInventors: Bernd-Harald Horst Jurgen Rohde, Erich Gottwald
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Patent number: 9529215Abstract: An optical network element has a light source which provides an optical signal that is fed to at least two modulators. Each modulator provides an optical carrier signal that is conveyed to a receiving unit. The receiving unit is configured to determine a deviation signal between the optical carrier signal and a carrier conveyed via an incoming signal and to feed the deviation signal to the modulator for adjusting the frequency and/or the phase of the optical carrier signal. Also, a corresponding method for processing data and a communication system with at least one optical network are described.Type: GrantFiled: February 10, 2011Date of Patent: December 27, 2016Assignee: Xieon Networks S.a.r.l.Inventors: Erich Gottwald, Harald Rohde
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Patent number: 9509407Abstract: A method and a device for conveying optical data are provided, wherein an optical network unit conveys data to a terminal via dual sideband modulation, wherein the terminal processes only the upper or only the lower sideband received from the optical network unit, and wherein several dual sideband modulated signals from several optical network units partially overlap when being received at the terminal. Furthermore, a communication system is suggested comprising at least one such device.Type: GrantFiled: August 21, 2013Date of Patent: November 29, 2016Assignee: Xieon Networks S.a.r.l.Inventor: Erich Gottwald
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Publication number: 20160282699Abstract: An optical IQ modulator (IQM) including two parallel Mach-Zehnder modulators (MZM1, MZM2) generates single sideband data signals. A control unit (18) generates additional optical single sideband pilot signals (PS1, PS2) positioned in a lower and a higher sideband respectively, and also further pilot signals (PS3, PS4) in both sidebands. A IQ modulator output signal (MOS) converted into electrical monitoring signals (MOS) and monitored. A control unit (18) selects control signals (CS12, CS3, CS4) and controls the IQ modulator via its bias ports (6, 7, 8) till the power transfer functions (PTF) of the Mach-Zehnder modulators (MZM1, MZM2) and the phase difference (??) between their output signals is optimized.Type: ApplicationFiled: March 3, 2014Publication date: September 29, 2016Inventors: Erich GOTTWALD, Harald ROHDE
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Patent number: 9432141Abstract: An optical network unit has a tunable laser. The tunable laser is tunable such that a point-to-point connection to another optical network unit is established via an optical fiber. There is also provided a method for processing data in an optical network and a corresponding communication system. The tunable laser can be adjusted based on a detected collision, and a frequency grid can be supplied from a centralized component.Type: GrantFiled: May 16, 2011Date of Patent: August 30, 2016Assignee: Xieon Networks S.a.r.l.Inventors: Erich Gottwald, Harald Rohde
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Patent number: 9401764Abstract: The present invention provides an apparatus, in particular an optical network unit, which comprises a first part operably coupled to an arm of an optical fiber network, the first part comprises an optical module including an optical-electric interface and/or an electric-optical interface locked on a preset wavelength band, and an interface module, and at least one second part operably coupled to a network entity of a communication network, each comprising a control unit, a signal processing unit and an interface module. One of the control units of the at least one second part is set by a optical line terminal of the optical fiber network as a master control unit configured to tune and control the optical module of the first part. The first part and the at least one second part are wireless coupled with respect to each other via the interface modules.Type: GrantFiled: October 9, 2012Date of Patent: July 26, 2016Assignee: Xieon Networks S.a.r.l.Inventors: Erich Gottwald, Ernst-Dieter Schmidt, Berthold Lankl
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Patent number: 9203211Abstract: An optical network component is provided comprising a semiconductor optical amplifier with an input and an output, wherein the input is connected to a light source, wherein the output is connected to an amplitude modulator, wherein the semiconductor optical amplifier converts an amplitude modulated signal from the amplitude modulator to a phase modulated signal and provides the phase modulated signal at its output. Also, a transmitter comprising at least one such optical network component is suggested.Type: GrantFiled: December 22, 2010Date of Patent: December 1, 2015Assignee: Xieon Networks S.a.r.l.Inventors: Erich Gottwald, Harald Rohde