Patents by Inventor Gerhard Thanhauser

Gerhard Thanhauser 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 arrangement for switching a Raman pump laser on and/or off
    Patent number: 8301031
    Abstract: Optoelectrical conversion of the received optical service signal (OSS), bandpass filtering and subsequent squaring produce a spectral line at the clock frequency (fT). This clock line (TL) is selected by means of narrowband filtering and rectified. The service signal voltage (VTLM) obtained in this manner is used to switch on a Raman pump laser (11).
    Type: Grant
    Filed: June 12, 2007
    Date of Patent: October 30, 2012
    Assignee: Nokia Siemens Networks GmbH & Co. KG
    Inventors: Guido Gentner, Gerhard Thanhäuser
  • Method for detecting a check-back signal in an optical transmission system
    Patent number: 7920787
    Abstract: The invention relates to a method for detecting a check-back signal in a transmission system for optical signals. According to said method, a constant proportion of the output in a defined frequency range of the check-back signal is concentrated in a narrow-band spectral range and is determined after a transmission phase by means of a narrow-band detection of the concentrated energy around the spectral range. If no signal is identified during the narrow-band detection, a line interruption is determined and no pump source is switched on for safety reasons. The narrow-band detection of the check-back signal also allows the transmission attenuation of the transmission system to be measured.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: April 5, 2011
    Assignee: Nokia Siemens Networks GmbH & Co. KG
    Inventors: Guido Gentner, René´ Neumann, Gerhard Thanhäuser
  • METHOD AND ARRANGEMENT FOR SWITCHING A RAMAN PUMP LASER ON AND/OR OFF
    Publication number: 20090190928
    Abstract: Optoelectrical conversion of the received optical service signal (OSS), bandpass filtering and subsequent squaring produce a spectral line at the clock frequency (fT). This clock line (TL) is selected by means of narrowband filtering and rectified. The service signal voltage (VTLM) obtained in this manner is used to switch on a Raman pump laser (11).
    Type: Application
    Filed: June 12, 2007
    Publication date: July 30, 2009
    Applicant: Nokia Siemens Networks GmbH & Co.
    Inventors: Guido Gentner, Gerhard Thanhäuser
  • Method for Detecting a Check-Back Signal in an Optical Transmission System
    Publication number: 20070269208
    Abstract: The invention relates to a method for detecting a check-back signal in a transmission system for optical signals. According to said method, a constant proportion of the output in a defined frequency range of the check-back signal is concentrated in a narrow-band spectral range and is determined after a transmission phase by means of a narrow-band detection of the concentrated energy around the spectral range. If no signal is identified during the narrow-band detection, a line interruption is determined and no pump source is switched on for safety reasons. The narrow-band detection of the check-back signal also allows the transmission attenuation of the transmission system to be measured.
    Type: Application
    Filed: April 1, 2003
    Publication date: November 22, 2007
    Inventors: Guido Gentner, Rene Neumann, Gerhard Thanhauser