Patents Examined by Hernang Sanghavi
  • Optical module for wavelength reference measurement in WDM systems
    Patent number: 6783284
    Abstract: An optical for wavelength reference measurement has in essence an optical conductor with integrated fiber Bragg grating that has a transmission maximum at a desired wavelength. Arranged downstream of the fiber Bragg grating is a photoreceiver receiving the measuring radiation beam passing through the fiber Bragg grating. If desired, it is possible to use a beam splitter to produce a reference radiation beam that is detected in a further photoreceiver.
    Type: Grant
    Filed: September 24, 2002
    Date of Patent: August 31, 2004
    Assignee: Infineon Technologies AG
    Inventors: Hans-Ludwig Althaus, Joachim Reill, Karl-Heinz Schlereth