optical time domain reflectometry

from The Free On-line Dictionary of Computing (8 July 2008)

Optical Time Domain Reflectometry

   Measurement of the elapsed time and intensity of light
   reflected on {optical fibre} using an optical time domain
   reflectometer.  The reflectometer can compute the distance to
   problems on the fibre such as attenuation and breaks, making
   it a useful tool in optical network trouble-shooting.

   (1995-02-01)