Tsarin fasaha na tsarin ƙara ƙarfin L-band EDFA

EDFA tana amfani da zare mai siffar erbium ion a matsayin hanyar samun riba, wanda ke samar da juyewar jama'a a ƙarƙashin hasken famfo. Yana samar da haɓakar hasken da aka ƙarfafa a ƙarƙashin haɓakar hasken sigina.
Ion ɗin Erbium suna da matakan kuzari guda uku. Suna a matakin makamashi mafi ƙanƙanta, E1, lokacin da babu wani haske da ke motsa su. Lokacin da zare ke ci gaba da motsa shi ta hanyar laser na tushen hasken famfo, ƙwayoyin da ke cikin yanayin ƙasa suna samun kuzari da canzawa zuwa matakin makamashi mafi girma. Kamar sauyawa daga E1 zuwa E3, saboda ƙwayar ba ta da ƙarfi a matakin makamashi mai girma na E3, zai faɗi cikin sauri zuwa yanayin metastable E2 a cikin tsarin canji mara haske. A wannan matakin makamashi, ƙwayoyin suna da tsawon rai. Saboda ci gaba da motsawar tushen hasken famfo, adadin ƙwayoyin da ke matakin makamashi na E2 zai ci gaba da ƙaruwa, kuma adadin ƙwayoyin da ke matakin makamashi na E1 zai ƙaru. Ta wannan hanyar, rarrabawar juzu'i na yawan jama'a yana faruwa a cikin zaren da aka yi amfani da shi ta hanyar erbium, kuma yanayin koyon haɓaka gani yana samuwa.
Lokacin da siginar shigarwar makamashin photon E=hf daidai yake da bambancin matakin kuzari tsakanin E2 da E1, E2-E1=hf, barbashi a cikin yanayin metastable zasu canza zuwa yanayin ƙasa E1 a cikin nau'in radiation mai motsawa. Hasken da shigarwar. Photons a cikin siginar iri ɗaya ne da photons, don haka yana ƙara yawan photons sosai, yana sa siginar shigarwar haske ta zama siginar fitarwa mai ƙarfi a cikin zaren da aka yi da erbium, yana fahimtar haɓaka siginar gani kai tsaye.

2. Tsarin tsarin da kuma gabatarwar na'urar asali
2.1. Tsarin tsarin amplifier na fiber optical na L-band kamar haka: