Optical time-domain reflectometer (namely,OTDR) is an instrument that understands the uniformity, defects, breakage, and coupling of the optical fiber through the analysis of the measurement curve. It can be used to measure fiber attenuation, connector loss, fiber fault location, and to understand the loss distribution along the length of the fiber. It is an indispensable tool in fiber optic cable construction, maintenance and monitoring.
With the continuous development and construction of optical networks, the inspection and maintenance of optical cables have become more and more important. The emergence of optical time domain reflectometers has made a great contribution to the inspection and maintenance of optical cables and greatly improved the work efficiency of the staff. Features of OTDR are as follow: