OTDR, why we use them?

OTDR stands for an optical time-domain reflectometer. It is an instrument used to test an optical fiber. This equipment works by injecting a series of optical pulses into the fiber and extracts, from the same end, the light that is scattered (Rayleigh backscatter) or reflected back (Fresnel reflections) from points along the fiber. This technology … Continue reading OTDR, why we use them?