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time2011/06/30
Rayleigh scattering is caused by the along the fiber produce irregular signal scattering and form. OTDR will measure back to part of the port OTDR scattering light. These backscattering signal would mean that the optical fiber to the attenuation by (loss/distance) degree.
The working principle of OTDR is similar to a radar. It first to optical fiber send a signal, then observe a point is to come back from what is information. This process will be repeated on, then will the results in the form of an average and track to display, the track is described in the paragraph in the strength of the optical signals.
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