Resources Contact Us Home
System and method for mapping chromatic dispersion in optical fibers

Image Number 2 for United States Patent #5956131.

A system and method in which the chromatic dispersion characteristic, as a function of distance along a section of transmissive fiber, is measured. First and second optical signals are launched into a fiber under test to thereby generate, by a four-wave mixing process in the fiber, a probe signal. Because of a wave-vector phase mismatch, the probe signal power oscillates with a spatial frequency that can be measured as a function of distance in the fiber. The intensity oscillations are measurable as, for example, temporal variations in the Rayleigh backscattered light detected at the input end of the fiber. According to the present invention, the dispersion parameter at one or both of the first and second optical signal wavelengths, as a function of length along the fiber, is derived directly from these intensity oscillation measurements. From this information, it is possible to further derive maps at other wavelengths of interest.

  Recently Added Patents
LED light source lamp having drive circuit arranged in outer periphery of LED light source
Fabric care compositions comprising front-end stability agents
Battery terminal with current sensor
Tricyclic inhibitors of kinases
Method and apparatus of communication using soft decision
5-phenyl-pentanoic acid derivatives as matrix metalloproteinase inhibitors for the treatment of asthma and other diseases
System and method for order placement in an electronic trading environment
  Randomly Featured Patents
Pulsed voltammetric detection of microorganisms
DNA encoding a growth factor specific for epithelial cells
Bridge device with self learning between network media and integrated circuit and method based on the same
Product packing machine
Keratinocyte derived interferon
Holding clamp and reversible earth working cutting teeth
Nucleic acid encoding a haplotype of human T2R receptor hT2R50
Cemented carbonitride alloy with improved plastic deformation resistance
Motor vehicle door handle