Patents by Inventor lars frriedrich

lars frriedrich 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 for monitoring an optical transmission line by means of an optical amplifier and optical amplifier therefor
    Publication number: 20070103766
    Abstract: The invention relates to a method for monitoring an optical transmission line by means of an optical amplifier, in particular a Raman amplifier, wherein the pump power (Pp) generated by a pump source (13) of the optical amplifier (7) is coupled into the optical transmission line (9), wherein the power (PASE) of the ASE (Amplified Spontaneous Emission) signal generated by the pump power (Pp) in the transmission line (9) and fed back toward the optical amplifier (7) is detected, and wherein an error signal is generated when the power (PASE) of the detected ASE signal falls below a preset threshold value.
    Type: Application
    Filed: October 26, 2005
    Publication date: May 10, 2007
    Inventor: lars frriedrich