Patents by Inventor Henrik Sunnerud
Henrik Sunnerud 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: 10594163Abstract: Presented herein are techniques for acoustically charging an implantable rechargeable battery. In accordance with embodiments presented herein, a sound sensor is implanted in a recipient and is configured to detect sound signals. The sound sensor is configured to convert the detected sound signals into electrical signals that can be used to charge the implantable rechargeable battery.Type: GrantFiled: May 17, 2017Date of Patent: March 17, 2020Assignee: COCHLEAR LIMITEDInventors: Dan Nyström, Henrik Sunnerud
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Publication number: 20180337561Abstract: Presented herein are techniques for acoustically charging an implantable rechargeable battery. In accordance with embodiments presented herein, a sound sensor is implanted in a recipient and is configured to detect sound signals. The sound sensor is configured to convert the detected sound signals into electrical signals that can be used to charge the implantable rechargeable battery.Type: ApplicationFiled: May 17, 2017Publication date: November 22, 2018Inventors: Dan Nyström, Henrik Sunnerud
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Patent number: 9673899Abstract: There is provided a system and a method for determining an in-band noise parameter representative of the optical noise contribution (such as OSNR) on a polarization-multiplexed optical Signal-Under-Test (SUT) comprising two polarized phase-modulated data-carrying contributions and an optical noise contribution.Type: GrantFiled: March 24, 2014Date of Patent: June 6, 2017Assignee: EXFO Inc.Inventors: Henrik Sunnerud, Mats Skold, Mathias Westlund
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Patent number: 9325428Abstract: A two-gate sampling system has been designed to perform sampled balanced detection of one or more input signal pairs. The present invention performs simultaneous sampling of both signals in each signal pair followed by digitization and combination of the sample pairs using software. By first sampling the signals and then combining the sampled into the corresponding balanced detected signal it is possible to avoid the bandwidth limitations and impedance problems introduced by traditional balanced detectors and electrical oscilloscopes. In particular, for optical sampling gates very high bandwidth sampling gates can be designed without any impedance issues and hence almost perfect balanced detection reconstruction can be performed for very high speed signals. Balanced detection is becoming more and more important as the new phase modulated optical data signals are introduced to the market, such as e.g. PSK, DPSK, QPSK and DQPSK. The present invention is well suited for analysis of these new types of signals.Type: GrantFiled: September 17, 2009Date of Patent: April 26, 2016Assignee: EXFO INC.Inventors: Mathias Westlund, Peter Andrekson, Henrik Sunnerud, Mats Skold
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Patent number: 9106334Abstract: There are provided a method and a system for characterizing the CMRR of an ICR under test, which employ highly coherent light from two continuous-wave (CW) single-frequency lasers whose respective optical frequencies mutually differ by an offset defining an “Intermediate Frequency” (fIF) in the rf electrical baseband. The method involves the coherent mixing of light from these two lasers in the ICR under test. A “tone” in the rf electrical baseband at frequency fIF is generated by the beating of light from the two single-frequency lasers as they interfere on the photodetectors of the ICR. The resulting tone at frequency fIF in the output electrical signals of the ICR is then detected and analyzed to characterize the CMRR of the ICR.Type: GrantFiled: May 9, 2014Date of Patent: August 11, 2015Assignee: EXFO Inc.Inventors: Mathias Westlund, Henrik Sunnerud
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Publication number: 20150110486Abstract: There is provided a system and a method for determining an in-band noise parameter representative of the optical noise contribution (such as OSNR) on a polarization-multiplexed optical Signal-Under-Test (SUT) comprising two polarized phase-modulated data-carrying contributions and an optical noise contribution.Type: ApplicationFiled: March 24, 2014Publication date: April 23, 2015Applicant: EXFO INC.Inventors: Henrik Sunnerud, Mats Skold, Mathias Westlund
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Publication number: 20140341564Abstract: There are provided a method and a system for characterizing the CMRR of an ICR under test, which employ highly coherent light from two continuous-wave (CW) single-frequency lasers whose respective optical frequencies mutually differ by an offset defining an “Intermediate Frequency” (fIF) in the rf electrical baseband. The method involves the coherent mixing of light from these two lasers in the ICR under test. A “tone” in the rf electrical baseband at frequency fIF is generated by the beating of light from the two single-frequency lasers as they interfere on the photodetectors of the ICR. The resulting tone at frequency fIF in the output electrical signals of the ICR is then detected and analyzed to characterize the CMRR of the ICR.Type: ApplicationFiled: May 9, 2014Publication date: November 20, 2014Applicant: EXFO Inc.Inventors: Mathias WESTLUND, Henrik SUNNERUD
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Patent number: 8768180Abstract: An optical sampling arrangement for high-speed measurement of the time-varying electric field of an optical input signal utilizes coherent mixing of the optical input signal with a reference laser source in a phase-diverse optical hybrid solution, followed by optical sampling of the coherently-mixed fields at the output of the optical hybrid. The generated streams of optical samples are then detected and signal processed in order to reconstruct a sampled version of the electric field of the original optical input signal.Type: GrantFiled: February 23, 2010Date of Patent: July 1, 2014Assignee: ExFo, Inc.Inventors: Mathias Westlund, Mats Skold, Henrik Sunnerud, Peter Andrekson, Bernard Ruchet
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Patent number: 8280245Abstract: An optical sampling arrangement for high-speed measurement of the time-varying electric field of a data-carrying optical input signal. The present invention includes optical sampling of the optical input signal, followed by coherent mixing with a reference laser source in an optical hybrid solution. The generated streams of mixed optical samples are then detected and signal processed in order to reconstruct a sampled version of the electric field of the data-carrying optical input signal.Type: GrantFiled: February 23, 2010Date of Patent: October 2, 2012Assignee: EXFO. Inc.Inventors: Mathias Westlund, Mats Sköld, Henrik Sunnerud, Peter A. Andrekson
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Publication number: 20120134667Abstract: An optical sampling arrangement for high-speed measurement of the time-varying electric field of an optical input signal utilizes coherent mixing of the optical input signal with a reference laser source in a phase-diverse optical hybrid solution, followed by optical sampling of the coherently-mixed fields at the output of the optical hybrid. The generated streams of optical samples are then detected and signal processed in order to reconstruct a sampled version of the electric field of the original optical input signal.Type: ApplicationFiled: February 23, 2010Publication date: May 31, 2012Applicant: EXFO INC.Inventors: Mathias Westlund, Mats Skold, Henrik Sunnerud, Peter Andrekson, Bernard Ruchet
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Publication number: 20110182573Abstract: A two-gate sampling system has been designed to perform sampled balanced detection of one or more input signal pairs. The present invention performs simultaneous sampling of both signals in each signal pair followed by digitization and combination of the sample pairs using software. By first sampling the signals and then combining the sampled into the corresponding balanced detected signal it is possible to avoid the bandwidth limitations and impedance problems introduced by traditional balanced detectors and electrical oscilloscopes. In particular, for optical sampling gates very high bandwidth sampling gates can be designed without any impedance issues and hence almost perfect balanced detection reconstruction can be performed for very high speed signals. Balanced detection is becoming more and more important as the new phase modulated optical data signals are introduced to the market, such as e.g. PSK, DPSK, QPSK and DQPSK. The present invention is well suited for analysis of these new types of signals.Type: ApplicationFiled: September 17, 2009Publication date: July 28, 2011Applicant: EXFO INC.Inventors: Mathias Westlund, Peter Andrekson, Henrik Sunnerud, Mats Skold
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Publication number: 20100215357Abstract: An optical sampling arrangement for high-speed measurement of the time-varying electric field of a data-carrying optical input signal. The present invention includes optical sampling of the optical input signal, followed by coherent mixing with a reference laser source in an optical hybrid solution. The generated streams of mixed optical samples are then detected and signal processed in order to reconstruct a sampled version of the electric field of the data-carrying optical input signal.Type: ApplicationFiled: February 23, 2010Publication date: August 26, 2010Inventors: Mathias Westlund, Mats Sköld, Henrik Sunnerud, Peter A. Andrekson
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Publication number: 20100067607Abstract: A two gate sampling system designed to perform sampled balanced detection of one or more input signal pairs. The present invention performs simultaneous sampling of both signals in each signal pair followed by digitization and combination of the sample pairs using software. By first sampling the signals and then combine the sampled into the corresponding balanced detected signal it is possible to avoid the bandwidth limitations and impedance problems introduced by traditional balanced detectors and electrical oscilloscopes. In particular for optical sampling gates very high bandwidth sampling gates can be designed without any impedance issues and hence almost perfect balanced detection reconstruction can be performed for very high speed signals. Balanced detection is becoming more and more important as the new phase modulated optical data signals are introduced to the market, such as e.g. PSK, DPSK, QPSK and DQPSK. The present invention is well suited for analysis of these new type of signals.Type: ApplicationFiled: September 18, 2008Publication date: March 18, 2010Inventors: Mathias Westlund, Peter Andrekson, Henrik Sunnerud, Mats Skold
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Patent number: 6765670Abstract: The present invention relates to a spectrometer module comprising an input, for receiving an incoming optical signal, a variable differential group delay (DGD) element, for applying a variable birefringence retardation to said incoming optical signal, and a detector unit for detecting the power of a signal exiting said variable DGD element, having a defined state of polarization. It also relates to a monitor module, a monitoring unit and a monitoring system, comprising such a spectrometer module for use in monitoring an optical network. Further, the invention relates to a spectrometer device, for spectrometry purposes, comprising a spectrometer module as stated above.Type: GrantFiled: November 27, 2001Date of Patent: July 20, 2004Assignee: Pro Forma AlfaInventors: Bengt-Erik Olsson, Magnus Karlsson, Henrik Sunnerud
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Publication number: 20030076493Abstract: The present invention relates to a spectrometer module comprising an input, for receiving an incoming optical signal, a variable differential group delay (DGD) element, for applying a variable birefringence retardation to said incoming optical signal, and a detector unit for detecting the power of a signal exiting said variable DGD element, having a defined state of polarization. It also relates to a monitor module, a monitoring unit and a monitoring system, comprising such a spectrometer module for use in monitoring an optical network.Type: ApplicationFiled: November 27, 2001Publication date: April 24, 2003Inventors: Bengt-Erik Olsson, Magnus Karlsson, Henrik Sunnerud