Otdrpresentation 171203144201

The document discusses optical time domain reflectometry (OTDR) which is used to locate faults in optical fibers. An OTDR works by launching light pulses into a fiber and analyzing the backscattered light to map the fiber's characteristics. It can detect events like connections, bends, and breaks by analyzing reflections and loss in the returned optical signal over time. The document covers OTDR operating principles, the factors that determine its measurement resolution and event location ability, and how it is used in the industry to test fiber links and networks.