Patents by Inventor Taras Igorevich Lakoba

Taras Igorevich Lakoba 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).

  • Method and apparatus for optimization of dispersion-managed return-to-zero transmission by employing optical pulses having variable widths
    Patent number: 7251417
    Abstract: A method and apparatus for transmitting optical pulses in a dispersion-managed optical transmission system comprises determining the pulse width of optical pulses in a optical transmission channel in accordance with the path-average dispersion (PAD) experienced by that channel.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: July 31, 2007
    Assignee: Lucent Technologies Inc.
    Inventors: Daniel A. Fishman, Yuan-Hua Kao, Taras Igorevich Lakoba, Frank J. Peragine
  • Method and apparatus for controlling the extinction ratio of transmitters
    Patent number: 6819480
    Abstract: A method and apparatus for modifying the extinction ratio of a modulated optical signal by adapting a modulator driver signal in response to differences in spectral regions of the modulated optical signal. In another embodiment for modifying the extinction ratio of a modulated optical signal, a modulator signal is adapted in response to differences between a profile of the modulated optical signal and a desired profile.
    Type: Grant
    Filed: May 2, 2002
    Date of Patent: November 16, 2004
    Assignee: Lucent Technologies Inc.
    Inventors: Lev Altman, Sonali Banerjee, Diego Fernando Grosz, Stefan Hunsche, Taras Igorevich Lakoba
  • Method and apparatus for optimization of dispersion-managed return-to-zero transmission by employing optical pulses having variable widths
    Publication number: 20040208648
    Abstract: A method and apparatus for transmitting optical pulses in a dispersion-managed optical transmission system comprises determining the pulse width of optical pulses in a optical transmission channel in accordance with the path-average dispersion (PAD) experienced by that channel.
    Type: Application
    Filed: March 8, 2002
    Publication date: October 21, 2004
    Inventors: Daniel A. Fishman, Yuan-Hua Kao, Taras Igorevich Lakoba, Frank J. Peragine
  • Method and system for reducing transmission penalties associated with ghost pulses
    Publication number: 20040057734
    Abstract: A method and apparatus for reducing transmission penalties associated with ghost pulses in an optical signal in a transmission system includes providing phase modulation to the optical signal in the transmission system with a period of phase modulation greater than a bit period of the transmission system, wherein the phase modulation is applied to the optical signal such that the phases of at least some logical “ones” within a sequence of logical “ones” of the optical signal are modified such that the phases of the individual ghost-pulse fields from each triplet of “ones” are different, either pseudo-randomized or substantially shifted by &pgr;, thereby resulting in a reduction of the total ghost pulse. Advantageously, there is no need to synchronize the timing of the phase modulation with the timing of the power profile of the optical signal.
    Type: Application
    Filed: September 25, 2002
    Publication date: March 25, 2004
    Applicant: LUCENT TECHNOLOGIES, INC.
    Inventor: Taras Igorevich Lakoba
  • Method and apparatus for controlling the extinction ratio of transmitters
    Publication number: 20030206674
    Abstract: A method and apparatus for modifying the extinction ratio of a modulated optical signal by adapting a modulator driver signal in response to differences in spectral regions of the modulated optical signal. In another embodiment for modifying the extinction ratio of a modulated optical signal, a modulator signal is adapted in response to differences between a profile of the modulated optical signal and a desired profile.
    Type: Application
    Filed: May 2, 2002
    Publication date: November 6, 2003
    Applicant: LUCENT TECHNOLOGIES INC.
    Inventors: Lev Altman, Sonali Banerjee, Diego Fernando Grosz, Stefan Hunsche, Taras Igorevich Lakoba