Patents by Inventor Nicolas Dupuis

Nicolas Dupuis 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).

  • Patent number: 10244296
    Abstract: Techniques for using planar photonic switch fabrics with reduced waveguide crossings are described. In one embodiment, a system is provided that comprises a memory that stores computer-executable components and a processor that executes computer-executable components stored in the memory. In one implementation, the computer-executable components comprise an arrangement component that arranges a first planar switch fabric topology. The computer-executable components further comprise a transformation component that interleaves a plurality of inputs of the first planar switch fabric topology and a plurality of outputs of the first planar switch fabric topology to form a second planar switch fabric topology, the second planar switch fabric topology having a lower number of waveguide crossings than the first planar switch fabric topology.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: March 26, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Nicolas Dupuis, Benjamin Lee
  • Patent number: 10225632
    Abstract: Techniques for using planar photonic switch fabrics with reduced waveguide crossings are described. In one embodiment, a system is provided that comprises a memory that stores computer-executable components and a processor that executes computer-executable components stored in the memory. In one implementation, the computer-executable components comprise an arrangement component that arranges a first planar switch fabric topology. The computer-executable components further comprise a transformation component that interleaves a plurality of inputs of the first planar switch fabric topology and a plurality of outputs of the first planar switch fabric topology to form a second planar switch fabric topology, the second planar switch fabric topology having a lower number of waveguide crossings than the first planar switch fabric topology.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: March 5, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Nicolas Dupuis, Benjamin Lee
  • Publication number: 20190037287
    Abstract: Optical switches include a first hybrid coupler configured to accept an input and to provide two branches. A phase tuner on a first branch includes a phase shifter. A first heater is positioned on the first branch and a second heater is positioned on the second branch, each configured to compensate for phase error. A second hybrid coupler configured to recombine the two branches. A first photodetector and a second photodetector are positioned at outputs of the second hybrid coupler and are configured to measure crosstalk between the outputs of the second hybrid coupler. A controller is configured to activate the first heater or the second heater to reduce the measured crosstalk.
    Type: Application
    Filed: October 5, 2018
    Publication date: January 31, 2019
    Inventors: Nicolas Dupuis, Benjamin G. Lee, Alexander V. Rylyakov, Mehmet Soyuer
  • Patent number: 10142711
    Abstract: Optical switches and methods of switching include a first hybrid coupler configured to accept an input and to provide two branches. A phase tuner on a first branch includes a Mach-Zehnder phase shifter configured to shift a signal on the first branch by a selected phase. A loss compensator on a second branch is configured to match a loss incurred on the first branch. A second hybrid coupler is configured to recombine the two branches such that the phase shift generated by the phase tuner determines which output of the second hybrid coupler is used.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: November 27, 2018
    Assignee: International Business Machines Corporation
    Inventors: Nicolas Dupuis, Benjamin G. Lee, Alexander V. Rylyakov, Mehmet Soyuer
  • Patent number: 10120210
    Abstract: A device and method of optical equalization using an optical modulator is provided. An electrical modulation signal is split into a first modulation signal and a second modulation signal. The second modulation signal is delayed relative to the first modulation signal. An amplitude of the second modulation signal is attenuated relative to the first modulation signal. The first modulation signal is applied to a first waveguide segment of the optical modulator. The second modulation signal that is delayed and attenuated relative to the first modulation signal is applied to a second waveguide segment of the optical modulator. Both the applied first and second modulation signals generate a feed-forward equalized optical signal that is recombined in the optical domain.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: November 6, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Nicolas Dupuis, Tam N. Huynh, Benjamin G. Lee, Jonathan E. Proesel, Renato Rimolo-Donadio, Alexander V. Rylyakov, Clint L. Schow
  • Publication number: 20180292682
    Abstract: A device and method of optical equalization using an optical modulator is provided. An electrical modulation signal is split into a first modulation signal and a second modulation signal. The second modulation signal is delayed relative to the first modulation signal. An amplitude of the second modulation signal is attenuated relative to the first modulation signal. The first modulation signal is applied to a first waveguide segment of the optical modulator. The second modulation signal that is delayed and attenuated relative to the first modulation signal is applied to a second waveguide segment of the optical modulator. Both the applied first and second modulation signals generate a feed-forward equalized optical signal that is recombined in the optical domain.
    Type: Application
    Filed: June 7, 2018
    Publication date: October 11, 2018
    Inventors: Nicolas Dupuis, Tam N. Huynh, Benjamin G. Lee, Jonathan E. Proesel, Renato Rimolo-Donadio, Alexander V. Rylyakov, Clint L. Schow
  • Patent number: 10084619
    Abstract: A method and system of optical communication are provided. An optical modulator device includes a first and a second waveguide segment, and is configured to modulate an incident optical signal. A first feed-forward equalization (FFE) circuit including an inner first tap and an inner second tap, is configured to equalize the first waveguide segment. A second FFE circuit including a first inner tap and a second inner tap, is configured to equalize the second waveguide segment. An FFE recombination of the first inner tap and the second inner tap of the first and second FFE circuits, is in the electrical domain, respectively. An FFE recombination of the first and second modulation signals, operative to equalize a combination of the first second waveguide segments, is in the optical domain.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: September 25, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Nicolas Dupuis, Tam N. Huynh, Benjamin G. Lee, Jonathan E. Proesel, Renato Rimolo-Donadio, Alexander V. Rylyakov, Clint L. Schow
  • Patent number: 10057665
    Abstract: Methods and systems for bias control in an optical switch fabric include monitoring optical power at outputs of a plurality of switch elements in an N×N switch fabric that has N inputs, N outputs, and M?2 stages. A bias control of a first of the plurality of switch elements is adjusted. It is determined whether the optical power at the outputs of the first switch element after bias control adjustment conform more closely to a predetermined criterion relative to the monitored optical power at the outputs of the first switch element prior to adjustment. The adjusting and determining steps are repeated for each of the remainder of the plurality of switch elements.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: August 21, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Nicolas Dupuis, Daniel M. Kuchta, Benjamin G. Lee, Alexander Rylyakov, Clint L. Schow
  • Patent number: 9989702
    Abstract: A photonic waveguide structure for performing polarization rotation includes a first waveguide layer including input and output waveguides. The input and output waveguides are separate and discontinuous structures. The input and output waveguides are configured in the first waveguide layer to have a lateral offset therebetween. The photonic waveguide structure further includes a second waveguide layer including a waveguide structure disposed under or over the first waveguide layer. The waveguide structure includes a polarization conversion region configured within the second waveguide layer to overlap the input or output waveguides in the first waveguide layer.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: June 5, 2018
    Assignee: International Business Machines Corporation
    Inventors: Fuad E. Doany, Nicolas Dupuis, Benjamin G. Lee, Frank R. Libsch, Jeonghwan Song
  • Publication number: 20180084318
    Abstract: Optical switches and methods of switching include a first hybrid coupler configured to accept an input and to provide two branches. A phase tuner on a first branch includes a Mach-Zehnder phase shifter configured to shift a signal on the first branch by a selected phase. A loss compensator on a second branch is configured to match a loss incurred on the first branch. A second hybrid coupler is configured to recombine the two branches such that the phase shift generated by the phase tuner determines which output of the second hybrid coupler is used.
    Type: Application
    Filed: April 14, 2015
    Publication date: March 22, 2018
    Inventors: Nicolas Dupuis, Benjamin G. Lee, Alexander V. Rylyakov, Mehmet Soyuer
  • Patent number: 9912413
    Abstract: An optical phase modulator includes an input source that is configured to receive a light source. There is an output operative to provide a phase modulated output signal based on the received light source. There is a first optical coupler configured to split the light source into a first optical path of a Mach Zehnder Interferometer (MZI) and a second optical path of the MZI. A static phase shifter is configured to provide a static phase shift to the first optical path. There is a phase modulator in the second optical path. There is a second optical coupler configured to combine the first optical path and the second optical path. The first and second optical couplers are tuned such that the phase modulated optical signal at the output provides a substantially constant amplitude that is independent of a change in loss introduced by the phase modulator.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: March 6, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Nicolas Dupuis, Benjamin G. Lee, Marc A. Taubenblatt
  • Publication number: 20180062754
    Abstract: An optical phase modulator includes an input source that is configured to receive a light source. There is an output operative to provide a phase modulated output signal based on the received light source. There is a first optical coupler configured to split the light source into a first optical path of a Mach Zehnder Interferometer (MZI) and a second optical path of the MZI. A static phase shifter is configured to provide a static phase shift to the first optical path. There is a phase modulator in the second optical path. There is a second optical coupler configured to combine the first optical path and the second optical path. The first and second optical couplers are tuned such that the phase modulated optical signal at the output provides a substantially constant amplitude that is independent of a change in loss introduced by the phase modulator.
    Type: Application
    Filed: August 26, 2016
    Publication date: March 1, 2018
    Inventors: Nicolas Dupuis, Benjamin G. Lee, Marc A. Taubenblatt
  • Patent number: 9887769
    Abstract: The device includes a first detector configured to detect, from received signal power, first fault parameters related to an occurrence of a first fault on this optical fiber. The device further includes a database configured to store the first fault parameters and a second detector configured to detect from the received signal power second fault parameters related to a restoration of a second fault on the optical fiber. The device further includes a comparator configured to compare the second fault parameters with the stored fault parameters and to decide that the fault is resolved if the first fault parameters most closely match the second fault parameters.
    Type: Grant
    Filed: November 27, 2014
    Date of Patent: February 6, 2018
    Assignee: Alcatel Lucent
    Inventors: Nicolas Dupuis, Stijn Meersman
  • Publication number: 20170354052
    Abstract: The present invention relates to an assembly (10) for attaching a data storage device (12) to an on-board computer including an encapsulation structure (17), and a receiving structure (18) for receiving the encapsulation structure (17) comprising a first connector complementary to a connector of the storage device and a second connector complementary to a connector of the onboard computer. The encapsulation structure (17) and the storage device (12) mounted therein are movable relative to the receiving structure (18) between an inserted configuration in which the encapsulation structure (17) and the storage device (12) are inserted into the receiving structure (18) and the connector of the storage device (12) is connected to the first connector, and a removed configuration in which the encapsulation structure (17) and the storage device (12) are removed from the receiving structure (18).
    Type: Application
    Filed: October 19, 2015
    Publication date: December 7, 2017
    Inventors: Georges Feyrin, Pascal Abomnes, Nicolas Dupuis, Nicolas Meyre
  • Publication number: 20170351122
    Abstract: A device and method of optical equalization using an optical modulator is provided. An electrical modulation signal is split into a first modulation signal and a second modulation signal. The second modulation signal is delayed relative to the first modulation signal. An amplitude of the second modulation signal is attenuated relative to the first modulation signal. The first modulation signal is applied to a first waveguide segment of the optical modulator. The second modulation signal that is delayed and attenuated relative to the first modulation signal is applied to a second waveguide segment of the optical modulator. Both the applied first and second modulation signals generate a feed-forward equalized optical signal that is recombined in the optical domain.
    Type: Application
    Filed: December 20, 2016
    Publication date: December 7, 2017
    Inventors: Nicolas Dupuis, Tam N. Huynh, Benjamin G. Lee, Jonathan E. Proesel, Renato Rimolo-Donadio, Alexander V. Rylyakov, Clint L. Schow
  • Publication number: 20170353333
    Abstract: A method and system of optical communication are provided. An optical modulator device includes a first and a second waveguide segment, and is configured to modulate an incident optical signal. A first feed-forward equalization (FFE) circuit including an inner first tap and an inner second tap, is configured to equalize the first waveguide segment. A second FFE circuit including a first inner tap and a second inner tap, is configured to equalize the second waveguide segment. An FFE recombination of the first inner tap and the second inner tap of the first and second FFE circuits, is in the electrical domain, respectively. An FFE recombination of the first and second modulation signals, operative to equalize a combination of the first second waveguide segments, is in the optical domain.
    Type: Application
    Filed: December 20, 2016
    Publication date: December 7, 2017
    Inventors: Nicolas Dupuis, Tam N. Huynh, Benjamin G. Lee, Jonathan E. Proesel, Renato Rimolo-Donadio, Alexander V. Rylyakov, Clint L. Schow
  • Publication number: 20170238075
    Abstract: Methods and systems for bias control in an optical switch fabric include monitoring optical power at outputs of a plurality of switch elements in an N×N switch fabric that has N inputs, N outputs, and M?2 stages. A bias control of a first of the plurality of switch elements is adjusted. It is determined whether the optical power at the outputs of the first switch element after bias control adjustment conform more closely to a predetermined criterion relative to the monitored optical power at the outputs of the first switch element prior to adjustment. The adjusting and determining steps are repeated for each of the remainder of the plurality of switch elements.
    Type: Application
    Filed: August 29, 2016
    Publication date: August 17, 2017
    Inventors: Nicolas Dupuis, Daniel M. Kuchta, Benjamin G. Lee, Alexander Rylyakov, Clint L. Schow
  • Publication number: 20170199330
    Abstract: A photonic waveguide structure for performing polarization rotation includes a first waveguide layer including input and output waveguides. The input and output waveguides are separate and discontinuous structures. The input and output waveguides are configured in the first waveguide layer to have a lateral offset therebetween. The photonic waveguide structure further includes a second waveguide layer including a waveguide structure disposed under or over the first waveguide layer. The waveguide structure includes a polarization conversion region configured within the second waveguide layer to overlap the input or output waveguides in the first waveguide layer.
    Type: Application
    Filed: November 24, 2015
    Publication date: July 13, 2017
    Inventors: Fuad E. Doany, Nicolas Dupuis, Benjamin G. Lee, Frank R. Libsch, Jeonghwan Song
  • Publication number: 20170099529
    Abstract: Optical switches and methods of switching include a first hybrid coupler configured to accept an input and to provide two branches. A phase tuner on a first branch includes a Mach-Zehnder phase shifter configured to shift a signal on the first branch by a selected phase. A loss compensator on a second branch is configured to match a loss incurred on the first branch. A second hybrid coupler is configured to recombine the two branches such that the phase shift generated by the phase tuner determines which output of the second hybrid coupler is used.
    Type: Application
    Filed: June 22, 2015
    Publication date: April 6, 2017
    Inventors: Nicolas Dupuis, Benjamin G. Lee, Alexander V. Rylyakov, Mehmet Soyuer
  • Publication number: 20170033862
    Abstract: The device includes a first detector configured to detect, from received signal power, first fault parameters related to an occurrence of a first fault on this optical fibre. The device further includes a database configured to store the first fault parameters and a second detector configured to detect from the received signal power second fault parameters related to a restoration of a second fault on the optical fibre. The device further includes a comparator configured to compare the second fault parameters with the stored fault parameters and to decide that the fault is resolved if the first fault parameters most closely match the second fault parameters.
    Type: Application
    Filed: November 27, 2014
    Publication date: February 2, 2017
    Inventors: Nicolas DUPUIS, Stijn MEERSMAN