An attenuator is an electronic device that reduces the amplitude or power of a signal without appreciably distorting its waveform.

An optical fiber (or fibre) is a glass or plastic fiber that carries light along its length. Fiber optics is the overlap of applied science and engineering concerned with the design and application of optical fibers.

Fiber optic patch panels are also known as fiber distribution panels. Patch panel's function is to terminate the fiber optic cable and provide access to the cable's individual fibers for cross connection.

A fiber pigtail is a single-fiber cable, usually short length, that has an optical connector on one end and a length of exposed fiber at the other end.

Fiber optic adapter are used in fiber optic connection, the typical use is to provide a cable to cable fiber connection.