Optical Time Domain Reflectometer (OTDR)
What is Optical Time Domain Reflectometer (OTDR)?
An Optical Time Domain Reflectometer (OTDR) is an optoelectronic instrument used to characterize optical fiber. It injects a series of optical pulses into the fiber under test and extracts, from the same end of the fiber, light that is scattered or reflected back from points along the fiber. This scattered or reflected light is measured and analyzed to characterize the fiber, including identifying the location of splices, connectors, bends, breaks and other events that reflect or attenuate the optical signal. OTDRs are commonly used for fiber optic cable installation, maintenance, and troubleshooting.
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