Patents by Inventor Theodore J. Schmidt

Theodore J. Schmidt 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).

  • Optical Receivers with Controllable Transfer Function Bandwidth and Gain Imbalance
    Publication number: 20100284702
    Abstract: Techniques, devices and systems based on optical receivers with controllable transfer function bandwidth and gain imbalance.
    Type: Application
    Filed: March 26, 2010
    Publication date: November 11, 2010
    Applicant: OPNEXT SUBSYSTEMS, INC.
    Inventors: Christian Malouin, Theodore J. Schmidt, Brian L. Heffner, Yannick Keith Lize, Gordon Ries
  • POLARIZATION MONITORING IN POLARIZATION DIVISION MULTIPLEXING IN OPTICAL COMMUNICATIONS
    Publication number: 20100098420
    Abstract: Systems and techniques for optical communications based on polarization division multiplexing are described.
    Type: Application
    Filed: October 22, 2008
    Publication date: April 22, 2010
    Applicant: STRATALIGHT COMMUNICATIONS, INC.
    Inventors: Edem Ibragimov, Theodore J. Schmidt
  • Adjustable Bit Rate Optical Transmission Using Programmable Signal Modulation
    Publication number: 20090196602
    Abstract: Techniques, apparatus and systems to provide adjustable bit rate optical transmission using programmable signal modulation in optical communication systems.
    Type: Application
    Filed: February 5, 2008
    Publication date: August 6, 2009
    Inventors: Ross Saunders, Roberto Marcoccia, Steven Keck, Theodore J. Schmidt, Christian Malouin
  • Balanced Phase-Shaped Binary Transmission In Optical Communications
    Publication number: 20090136240
    Abstract: Optical communication apparatus, methods, systems are provided based on balanced-detection phase-shaped binary transmission (BD-PSBT).
    Type: Application
    Filed: October 16, 2008
    Publication date: May 28, 2009
    Inventors: Christian Malouin, Theodore J. Schmidt
  • Optical Receiver Having Bandwidth Control For Intersymbol Interference Compensation
    Publication number: 20090116851
    Abstract: Apparatus and techniques for receiving and processing an optical signal. In one implementation, an optical receiver is provided to include a delay line interferometer, an etalon, and a data estimator for estimating the data carried on a differentially modulated optical input signal. The delay line interferometer receives the input signal and issues differentially decoded constructive and destructive signals. The etalon filters the constructive signal with a transmission stopband imposed over the passband of the constructive signal. The bandwidth of the etalon stopband is selected based on the bandwidth of the modulation of the input signal in order to maximize received signal quality. The data estimator uses a difference between signals derived from the filtered constructive signal and the destructive signal for estimating data.
    Type: Application
    Filed: November 5, 2007
    Publication date: May 7, 2009
    Inventors: Brian L. Heffner, Christian Malouin, Theodore J. Schmidt
  • Optical transmission system having optimized filter wavelength offsets
    Patent number: 7437080
    Abstract: An optical transmission system having optical transmit and receive filters having passbands adjusted or selected for opposite and equal wavelength offsets from the optical wavelength of a carrier or the channel center wavelength.
    Type: Grant
    Filed: February 3, 2005
    Date of Patent: October 14, 2008
    Assignee: Stratalight Communications, Inc.
    Inventors: Theodore J. Schmidt, Anhui H. Liang
  • Optical receiver having transfer function bandwidth selection
    Publication number: 20080232821
    Abstract: An optical receiver apparatus and methods for mitigating intersymbol interference (ISI) in a differentially-encoded modulation transmission system by controlling constructive and destructive transfer functions. The receiver includes a bandwidth control element for controlling transfer function bandwidth, a transfer phase controller for controlling transfer function phase and/or an imbalancer for imbalancing the transfer functions for compensating for intersymbol interference and optimizing the quality of the received optical signal.
    Type: Application
    Filed: March 22, 2007
    Publication date: September 25, 2008
    Inventors: Christian Malouin, Theodore J. Schmidt, Brian L. Heffner
  • Optical receiver having FSR phase compensation
    Publication number: 20080231941
    Abstract: An optical receiver apparatus and methods for mitigating intersymbol interference (ISI) in a differentially-encoded modulation transmission system by controlling constructive and destructive transfer functions. The receiver includes a bandwidth control element for controlling transfer function bandwidth, a transfer phase controller for controlling transfer function phase and/or an imbalancer for imbalancing the transfer functions for compensating for intersymbol interference and optimizing the quality of the received optical signal.
    Type: Application
    Filed: March 14, 2007
    Publication date: September 25, 2008
    Inventors: Cristian Malouin, Theodore J. Schmidt, Brian L. Heffner
  • GT decoder having bandwidth control for ISI compensation
    Publication number: 20080226306
    Abstract: An optical receiver apparatus and methods for mitigating intersymbol interference (ISI) in a differentially-encoded modulation transmission system by controlling constructive and destructive transfer functions. The receiver includes a bandwidth control element for controlling transfer function bandwidth, a transfer phase controller for controlling transfer function phase and/or an imbalancer for imbalancing the transfer functions for compensating for intersymbol interference and optimizing the quality of the received optical signal.
    Type: Application
    Filed: May 30, 2007
    Publication date: September 18, 2008
    Inventors: Brian L. Heffner, Christian Malouin, Theodore J. Schmidt
  • Delay line interferometer having a movable mirror
    Publication number: 20080225380
    Abstract: An optical receiver apparatus and methods for mitigating intersymbol interference (ISI) in a differentially-encoded modulation transmission system by controlling constructive and destructive transfer functions. The receiver includes a bandwidth control element for controlling transfer function bandwidth, a transfer phase controller for controlling transfer function phase and/or an imbalancer for imbalancing the transfer functions for compensating for intersymbol interference and optimizing the quality of the received optical signal.
    Type: Application
    Filed: May 1, 2007
    Publication date: September 18, 2008
    Inventors: Brian L. Heffner, Christian Malouin, Theodore J. Schmidt
  • Delay line interferometer having a stepped delay element
    Publication number: 20080225381
    Abstract: An optical receiver apparatus and methods for mitigating intersymbol interference (ISI) in a differentially-encoded modulation transmission system by controlling constructive and destructive transfer functions. The receiver includes a bandwidth control element for controlling transfer function bandwidth, a transfer phase controller for controlling transfer function phase and/or an imbalancer for imbalancing the transfer functions for compensating for intersymbol interference and optimizing the quality of the received optical signal.
    Type: Application
    Filed: May 1, 2007
    Publication date: September 18, 2008
    Inventors: Brian L. Heffner, Christian Malouin, Theodore J. Schmidt