Patents by Inventor Harald Rohde
Harald Rohde 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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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: 10103816Abstract: In a method and system for decoding a differential M-ary phase or quadrature amplitude modulated signal, the incoming signal is decoded according to a plurality of different decoding rules, wherein said plurality of decoding rules correspond to different values of a resulting frequency difference or mismatch between a signal frequency and a local oscillator reference frequency. The invention allows to increase a tolerance window for the maximal allowable frequency offset, and thus helps to speed up an initial locking process or to allow for equipment which has a lower tuning granularity.Type: GrantFiled: August 12, 2015Date of Patent: October 16, 2018Assignee: Xieon Networks S.a.r.l.Inventor: Harald Rohde
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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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Publication number: 20170294972Abstract: In a method and system for decoding a differential M-ary phase or quadrature amplitude modulated signal, the incoming signal is decoded according to a plurality of different decoding rules, wherein said plurality of decoding rules correspond to different values of a resulting frequency difference or mismatch between a signal frequency and a local oscillator reference frequency. The invention allows to increase a tolerance window for the maximal allowable frequency offset, and thus helps to speed up an initial locking process or to allow for equipment which has a lower tuning granularity.Type: ApplicationFiled: August 12, 2015Publication date: October 12, 2017Inventor: Harald ROHDE
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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: 9461749Abstract: An Optical Line Terminal (OLT) transmitting device is provided, the device comprising an IQ modulator having a first input, a second input and an output, a first digital analog converter (DAC) directly coupled to the first input of the IQ modulator, a second digital analog converter (DAC) directly coupled to the second input of the IQ modulator; an optical filter directly coupled to the output of the IQ modulator.Type: GrantFiled: June 19, 2012Date of Patent: October 4, 2016Assignee: Xieon Networks S.a.r.l.Inventors: Sander Jansen, Harald Rohde
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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: 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
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Patent number: 9173013Abstract: A method and a device for adjusting a laser in an optical network. At least one alive message is transmitted from a first optical component towards a second optical component. A confirmation message is transmitted from the second optical component to the first optical component determining the wavelength of the laser to be used based on the alive message received by the second optical component. Furthermore, an optical communication system is provided with an optical element.Type: GrantFiled: August 21, 2009Date of Patent: October 27, 2015Assignee: Xieon Networks S.a.r.l.Inventors: Harald Rohde, Sylvia Smolorz
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Patent number: 9014573Abstract: A method for processing data in an optical network element are provided, wherein the optical network element comprises a local oscillator operating at a first frequency; wherein an incoming data stream is received at a second frequency; wherein the incoming data steam is processed using the first frequency; wherein a first pattern is searched in the incoming data stream; wherein a second pattern is searched in the incoming data stream; and wherein the first pattern corresponds to the first frequency being in the spectrum on one side of the second frequency and the second pattern corresponds to the first frequency being in the spectrum on the other side of the second frequency. Also, a corresponding optical network element and a communication system comprising at least one such optical network element are suggested.Type: GrantFiled: February 13, 2012Date of Patent: April 21, 2015Assignee: Xieon Networks S.a.r.l.Inventors: Harald Rohde, Thomas Treyer
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Patent number: 9002203Abstract: A method for data processing of an optical network element is provided, wherein a configuration information is received at the optical network element and a light signal is adjusted to a wavelength or wavelength range indicated by said configuration information; wherein an incoming optical signal is demodulated via the light signal and mixed as an electrical demodulated signal with a signal of an oscillator; wherein the signal of the oscillator is tuned to improve a reception of the incoming signal at the optical network element; and wherein the light signal is used for upstream modulation to provide a modulated optical upstream signal. Furthermore, an according device and a communication system are suggested including at least one such device.Type: GrantFiled: March 11, 2010Date of Patent: April 7, 2015Assignee: Xieon Networks S.a.r.l.Inventors: Thomas Treyer, Karl Kloppe, Harald Rohde
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Method for data processing in an optical network, optical network component and communication system
Patent number: 8934773Abstract: A method for data processing in an optical network includes providing several main wavelengths and processing a subcarrier modulation for the several main wavelengths. An optical network component and a communication system including such an optical network component are also provided.Type: GrantFiled: July 31, 2008Date of Patent: January 13, 2015Assignee: Xieon Networks S.a.r.l.Inventors: Erich Gottwald, Karl Kloppe, Harald Rohde -
Publication number: 20150003838Abstract: 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: ApplicationFiled: September 7, 2012Publication date: January 1, 2015Applicant: XIEON NETWORKS S.a.r.l.Inventors: Erich Gottwald, Harald Rohde, Thomas Treyer
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Patent number: 8824034Abstract: A method and a device for operating a laser in an optical component are provided, wherein the laser is a local oscillator of the optical component; and wherein a linewidth of the laser is broadened. Furthermore, an optical communication system is suggested comprising said optical component.Type: GrantFiled: September 11, 2009Date of Patent: September 2, 2014Assignee: Xieon Networks S.a.r.l.Inventors: Harald Rohde, Thomas Treyer, Sylvia Smolorz, Erich Gottwald
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Patent number: 8811826Abstract: Lamps having light emitting diodes configured for data transmission require the high-frequency circuit of higher power. In order to simplify the required electronics, the light emitting diodes are divided into groups and the groups are modulated differently. Due to the multilevel modulation, the symbol rate can be reduced with the data rate remaining the same, thus reducing the switching rate and the circuitry complexity.Type: GrantFiled: September 2, 2008Date of Patent: August 19, 2014Assignee: Siemens AktiengesellschaftInventors: Oscar Cristobal Gaete Jamett, Sebastian Randel, Harald Rohde
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Publication number: 20140226993Abstract: An Optical Line Terminal (OLT) transmitting device is provided, the device comprising an IQ modulator having a first input, a second input and an output, a first digital analog converter (DAC) directly coupled to the first input of the IQ modulator, a second digital analog converter (DAC) directly coupled to the second input of the IQ modulator; an optical filter directly coupled to the output of the IQ modulator.Type: ApplicationFiled: June 19, 2012Publication date: August 14, 2014Applicant: XIEON NETWORKS S.A.R.L.Inventors: Sander Jansen, Harald Rohde
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Method for data processing in an optical network, optical network component and communication system
Patent number: 8705970Abstract: A method for data processing in an optical network includes providing at least one main wavelength and processing a subcarrier modulation for the at least one main wavelength, wherein a portion of the subcarrier modulated signal is suppressed. An optical network component and a communication system having such an optical network component are also provided.Type: GrantFiled: July 31, 2008Date of Patent: April 22, 2014Assignee: Xieon Networks S.a.r.l.Inventors: Erich Gottwald, Karl Kloppe, Harald Rohde -
Publication number: 20140023370Abstract: A method for processing data in an optical network element are provided, wherein the optical network element comprises a local oscillator operating at a first frequency; wherein an incoming data stream is received at a second frequency; wherein the incoming data steam is processed using the first frequency; wherein a first pattern is searched in the incoming data stream; wherein a second pattern is searched in the incoming data stream; and wherein the first pattern corresponds to the first frequency being in the spectrum on one side of the second frequency and the second pattern corresponds to the first frequency being in the spectrum on the other side of the second frequency. Also, a corresponding optical network element and a communication system comprising at least one such optical network element are suggested.Type: ApplicationFiled: February 13, 2012Publication date: January 23, 2014Applicant: NOKIA SIEMENS NETWORKS OYInventors: Harald Rohde, Thomas Treyer
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Publication number: 20140016937Abstract: An optical communication system and a method for data processing in an optical network are provided, the optical network including a first optical transmission group for generating a first plurality of wavelengths in a downstream direction, a second optical transmission group for generating a second plurality of wavelengths in the downstream direction and a plurality of optical network units for receiving the first and second plurality of wavelengths, wherein the plurality of optical network units are configured to change between a first mode and a second mode of data transmission, the method comprising the steps of allocating the wavelengths associated with the optical network units in the first mode of data transmission in the first optical transmission group, allocating the wavelengths associated with the optical network units in the second mode of data transmission in the second optical transmission group and deactivating the second optical transmission group.Type: ApplicationFiled: December 15, 2011Publication date: January 16, 2014Applicant: NOKIA SIEMENS NETWORKS OYInventors: Harald Rohde, Thomas Treyer