Definitions for "Optical Time Domain Reflectometer"
An instrument that allows the characterization of a fibre by the analysis of backscattered light. The OTDR is one of the most useful diagnostic tools in the fibre trade.
An instrument that measures transmission characteristics by sending a series of short pulses of light down a fiber and providing a graphic representation of the back-scattered light.
An instrument that measures transmission characteristics of fiber by sending a pulse of light down the fiber and measuring the light scattered across the length and reflected back from the end as a function of time.