https://yamasakiot.com/product/t02-y24-otdr/ OTDR stands for an optical time-domain reflectometer. It is an instrument used to test an optical fiber. OTDR 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. … Continue reading OTDR, why we use them?
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