What Does Erbium-Doped Fiber Amplifier (EDFA) Mean?
An erbium-doped fiber amplifier (EDFA) is a device that amplifies an optical fiber signal. It is used in the telecommunications field and in various types of research fields. An EDFA is “doped” with a material called erbium. The term “doping” refers to the process of using chemical elements to facilitate results through the manipulation of electrons.
Techopedia Explains Erbium-Doped Fiber Amplifier (EDFA)
In general, EDFA works on the principle of stimulating the emission of photons. With EDFA, an erbium-doped optical fiber at the core is pumped with light from laser diodes. This type of setup in telecom systems can help with fiber communications, for example, boosting the power of a data transmitter. An EDFA may also be used to maintain long spans of a passive fiber network and may also be used for some types of equipment testing.
