Patents Assigned to Siémens Aktiengesellschaft
  • Method and apparatus for adjusting tilting and level of optical signals
    Patent number: 7024117
    Abstract: Pump energy with a wavelength which is below the wavelength of an optical signal is fed into a transmission section from a pump laser via a coupler. The received optical signal is attenuated with increasing pump power with signals having higher frequencies being more strongly damped.
    Type: Grant
    Filed: November 6, 1998
    Date of Patent: April 4, 2006
    Assignee: Siémens Aktiengesellschaft
    Inventor: Erich Gottwald