L-band EDFA amplifier system technical scheme

EDFA imagwiritsa ntchito erbium ion-doped fiber monga njira yopezera phindu, yomwe imapanga kusinthika kwa anthu pansi pa kuwala kwa pampu. Imazindikira kukulitsa kwamphamvu kwa radiation pansi pa kulowetsedwa kwa kuwala kwazizindikiro.
Erbium ions ali ndi mphamvu zitatu. Iwo ali pa mlingo wotsika kwambiri wa mphamvu, E1, pamene sakukondwera ndi kuwala kulikonse. Pamene CHIKWANGWANI ndi mosalekeza okondwa ndi mpope kuwala gwero laser, ndi particles pansi boma kupeza mphamvu ndi kusintha kwa mlingo wapamwamba mphamvu. Monga kusintha kuchokera ku E1 kupita ku E3, chifukwa tinthu tating'onoting'ono tating'onoting'ono ta mphamvu ya E3, idzagwa mofulumira ku chikhalidwe cha metastable E2 mu njira yosinthira yopanda ma radiation. Pa msinkhu uwu wa mphamvu, tinthu tating'onoting'ono timakhala ndi moyo wautali. Chifukwa cha chisangalalo chosalekeza cha gwero la kuwala kwa mpope, chiwerengero cha particles pa E2 mphamvu mlingo chidzapitirira kuwonjezeka, ndipo chiwerengero cha particles pa E1 mphamvu mlingo adzawonjezeka. Mwanjira iyi, kugawanika kwa chiwerengero cha anthu kumapezeka mu erbium-doped fiber, ndipo mikhalidwe yophunzirira kukula kwa kuwala ilipo.
Pamene cholowetsa chizindikiro cha photon mphamvu E = hf ndi yofanana ndendende ndi kusiyana kwa msinkhu wa mphamvu pakati pa E2 ndi E1, E2-E1 = hf, tinthu tating'onoting'ono timene timakhala tating'onoting'ono timapita ku nthaka E1 mu mawonekedwe a cheza chokondoweza. Ma radiation ndi kulowetsamo Ma photons omwe ali mu siginecha amafanana ndi ma photons, motero amachulukitsa kuchuluka kwa ma photons, kupangitsa kuti chizindikirocho chikhale chizindikiro champhamvu chotuluka mu fiber ya erbium-doped, kuzindikira kukulitsa kwachindunji kwa chizindikiro cha kuwala. .

2. Chithunzi cha dongosolo ndi chiyambi cha chipangizo
2.1. Chithunzi chojambula cha L-band optical fiber amplifier system ndi motere: