Rof Electro-Optic Modulator Enfa Enfifier Erbium Doped fiber fiber amplifier ydfa amhilifier

Amplifier na gani shine na'urar wacce ta karɓi wasu hasken siginar da ke karɓar wasu tare da haɓaka fitarwa tare da babban iko. Yawanci, abubuwan da ke ciki da abubuwan fashewa sune katako mai laser (da wuya wasu nau'ikan katako), ko dai yada katako na Gausian a cikin sarari kyauta ko a cikin fiber. Ammar da ke faruwa a cikin abin da ake kira cinancin matsakaici, wanda dole ne ya kasance "pumped" (watau, da aka bayar da makamashi) daga tushen waje. Yawancin replifiers na gani ne ko dai a zahiri ko na lantarki.
Yawancin nau'ikan amplifiers sun banbanta misali dangane da mallakar kaddarorin. Misali, bakada-farko-eded lasciyar samun kafofin watsa shirye-shirye na iya adana wadatar makamashi mai yawa, alhali amplifiers na almara suna ba da amplification kawai muddin lokacin famfo yana nan. A matsayin wani misali, amplifiers Repicididdigar Enikical Store Store da ƙarancin ƙarfi fiye da amsar fiber, kuma wannan yana da mahimmancin hanyoyin sadarwar fiber na fiber.