Patents by Inventor Andreas B. Leven

Andreas B. Leven 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).

  • Symbol timing recovery in polarization division multiplexed coherent optical transmission system
    Patent number: 8655191
    Abstract: A method, apparatus and system for providing clock and data recovery in a receiver for receiving a high speed coherent polarization division multiplexed optical signal using a digital signal processing block including a spectral domain spatial combiner are provided.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: February 18, 2014
    Assignee: Alcatel Lucent
    Inventors: Noriaki Kaneda, Andreas B. Leven, Stefan Weisser
  • Phase error correction in a coherent receiver
    Patent number: 8270849
    Abstract: A method and apparatus for correcting of phase errors in a coherent optical receiver are disclosed. Embodiments include a method for calculating a phase error between in-phase and quadrature-phase component signals, multiplying the phase error by one of the component signals and subtracting the result from the other component signal to output a corrected signal.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: September 18, 2012
    Assignee: Alcatel Lucent
    Inventors: Noriaki Kaneda, Andreas B. Leven
  • Symbol Timing Recovery in Polarization Division Multiplexed Coherent Optical Transmission System
    Publication number: 20100329677
    Abstract: A method, apparatus and system for providing clock and data recovery in a receiver for receiving a high speed coherent polarization division multiplexed optical signal using a digital signal processing block including a spectral domain spatial combiner are provided.
    Type: Application
    Filed: June 29, 2009
    Publication date: December 30, 2010
    Inventors: Noriaki Kaneda, Andreas B. Leven, Stefan Weisser
  • System and method for receiving coherent, polarization-multiplexed optical signals
    Patent number: 7809284
    Abstract: An apparatus, a polarization diversity receiver and a method of receiving a received optical signal. In one embodiment, the apparatus includes: (1) an optical device configured to separate in-phase and quadrature components of a received optical signal, to transmit the in-phase components to a first optical output thereof and to transmit the quadrature components to a second optical output thereof, (2) a first polarization splitter coupled to receive light at the first optical output and (3) a second polarization splitter coupled to receive light at the second optical output.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: October 5, 2010
    Assignee: Alcatel-Lucent USA Inc.
    Inventors: Noriaki Kaneda, Andreas B. Leven
  • PHASE ERROR CORRECTION IN A COHERENT RECEIVER
    Publication number: 20100247113
    Abstract: A method and apparatus for correcting of phase errors in a coherent optical receiver are disclosed. Embodiments include a method for calculating a phase error between in-phase and quadrature-phase component signals, multiplying the phase error by one of the component signals and subtracting the result from the other component signal to output a corrected signal.
    Type: Application
    Filed: March 31, 2009
    Publication date: September 30, 2010
    Inventors: Noriaki Kaneda, Andreas B. Leven
  • Optical Data Communication System Having Reduced Pulse Distortion and Method of Operating the Same
    Publication number: 20090003838
    Abstract: An optical data transmission system and a method of communicating data. In one embodiment, the transmission system is part of an optical data communication system that includes: (1) an optical pulse transmitter configured to generate amplitude-modulated optical pulses at a fixed repetition rate, (2) an optical filter coupled to an output of the optical pulse transmitter, having a transmission notch at the fixed repetition rate and configured to filter the optical pulses and (3) an optical detector coupled to an output of the optical filter and configured to produce an output electrical signal representative of intensities of the optical pulses provided by the optical filter.
    Type: Application
    Filed: June 27, 2007
    Publication date: January 1, 2009
    Applicant: Lucent Technologies Incorporated
    Inventors: Young-Kai Chen, Andreas B. Leven
  • SYSTEM AND METHOD FOR RECEIVING COHERENT, POLARIZAZTION-MULTIPLEXED OPTICAL SIGNALS
    Publication number: 20070297806
    Abstract: An apparatus, a polarization diversity receiver and a method of receiving a received optical signal. In one embodiment, the apparatus includes: (1) an optical device configured to separate in-phase and quadrature components of a received optical signal, to transmit the in-phase components to a first optical output thereof and to transmit the quadrature components to a second optical output thereof, (2) a first polarization splitter coupled to receive light at the first optical output and (3) a second polarization splitter coupled to receive light at the second optical output.
    Type: Application
    Filed: June 23, 2006
    Publication date: December 27, 2007
    Applicant: Lucent Technologies, Incorporated
    Inventors: Noriaki Kaneda, Andreas B. Leven