Ka'ida da aikace-aikacenAmplifier fiber mai amfani da erbium-doped EDFA
Tsarin asali naEDFAAmplifier na fiber mai erbium, wanda galibi ya ƙunshi matsakaici mai aiki (zaren quartz mai tsawon mita da yawa, diamita na tsakiya 3-5 microns, yawan allurar da ke cikin famfo (25-1000) x10-6), tushen hasken famfo (990 ko 1480nm LD), mahaɗin gani da mai raba haske. Hasken sigina da hasken famfo na iya yaduwa a cikin alkibla ɗaya (famfo mai haɗin gwiwa), alkiblar akasin haka (famfo mai juyawa), ko duka alkibla biyu (famfo mai juyawa biyu) a cikin zaren Erbium. Lokacin da aka allurar hasken sigina da hasken famfo a cikin zaren erbium a lokaci guda, ion na erbium yana motsawa zuwa matakin kuzari mai girma (tsarin matakai uku) a ƙarƙashin aikin hasken famfo, kuma ba da daɗewa ba ya ruɓe zuwa matakin metastable. Lokacin da ya koma yanayin ƙasa a ƙarƙashin aikin hasken siginar da ya faru, ana fitar da photon da ya dace da hasken sigina, don haka siginar ta ƙaru. Tsarin fitar da iskar gas mai ƙarfi (ASE) yana da babban bandwidth (har zuwa 20-40nm) kuma yana da kololuwa biyu da suka yi daidai da 1530nm da 1550nm bi da bi.
Babban fa'idodinAmplifier EDFAsuna da babban riba, babban bandwidth, ƙarfin fitarwa mai yawa, ingantaccen famfo mai yawa, ƙarancin asarar shigarwa, da rashin jin daɗin yanayin polarization.
Ka'idar aiki na amplifier fiber mai amfani da erbium
Amplifier ɗin fiber mai amfani da Erbium (Erbium)Na'urar ƙara haske ta EDFA） galibi ya ƙunshi zare mai erbium (kimanin tsawon mita 10-30) da kuma tushen hasken famfo. Ka'idar aiki ita ce zare mai erbium yana samar da hasken da ke motsawa a ƙarƙashin aikin tushen hasken da aka famfo (tsawon raƙuman ruwa 980nm ko 1480nm), kuma hasken da aka haskaka yana canzawa tare da canjin siginar hasken shigarwa, wanda yayi daidai da ƙara girman siginar hasken shigarwa. Sakamakon ya nuna cewa karuwar amplifier fiber mai erbium yawanci shine 15-40db, kuma ana iya ƙara nisan relay da fiye da kilomita 100. Don haka, mutane ba za su iya taimakawa ba sai dai tambaya: me yasa masana kimiyya suka yi tunanin amfani da erbium mai erbium mai erbium mai erbium don ƙara ƙarfin raƙuman haske? Mun san cewa erbium wani abu ne na ƙasa mai wuya, kuma abubuwan ƙasa masu wuya suna da halayensu na musamman. An daɗe ana amfani da abubuwan ƙasa masu wuya a cikin na'urorin gani don inganta aikin na'urorin gani, don haka wannan ba abu ne da ba a zata ba. Bugu da ƙari, me yasa ake zaɓar tsawon tsayin tushen hasken famfo a 980nm ko 1480nm? A zahiri, tsawon tsayin tushen hasken famfo na iya zama 520nm, 650nm, 980nm, da 1480nm, amma aiki ya tabbatar da cewa tsawon tsayin tushen hasken famfo na 1480nm shine mafi girma, sai kuma tsawon tsayin tushen hasken famfo na 980nm.
Tsarin jiki
Tsarin asali na amplifier fiber mai erbium-doped (EDFA Optical Amplifier). Akwai mai rabawa a ƙarshen shigarwa da ƙarshen fitarwa, manufar ita ce a yi watsa siginar gani ta hanya ɗaya. Mai haɗa famfo yana da tsawon tsayi na 980nm ko 1480nm kuma ana amfani da shi don samar da makamashi. Aikin mahaɗin shine haɗa siginar gani ta shigarwa da hasken famfo cikin zaren da aka yi da erbium, da kuma canja wurin kuzarin hasken famfo zuwa siginar gani ta shigarwa ta hanyar aikin zaren da aka yi da erbium, don cimma haɓakar kuzarin siginar gani ta shigarwa. Domin samun ƙarfin gani mafi girma da ƙarancin amo, amplifier fiber mai erbium da ake amfani da shi a aikace yana ɗaukar tsarin tushen famfo biyu ko fiye tare da masu rabawa a tsakiya don ware juna. Domin samun lanƙwasa mai faɗi da faɗi, an ƙara matatar mai lanƙwasa gain.
EDFA ya ƙunshi manyan sassa guda biyar: Zaren Erbium-doped fiber (EDF), maƙallin Optical (WDM), mai raba haske (ISO), Matatar Optical, da kuma Supply Pumping Supply. Tushen famfo da ake amfani da su sun haɗa da 980nm da 1480nm, kuma waɗannan tushen famfo guda biyu suna da ingantaccen aikin famfo kuma ana amfani da su fiye da haka. Haɓakar sautin tushen hasken famfo na 980nm ya yi ƙasa; Tushen hasken famfo na 1480nm yana da ingantaccen aikin famfo kuma yana iya samun ƙarfin fitarwa mafi girma (kimanin 3dB ya fi tushen hasken famfo na 980nm).
fa'ida
1. Tsawon zangon aiki ya yi daidai da ƙaramin taga na rage girman zare guda ɗaya.
2. Ingantaccen haɗin kai. Domin kuwa ƙarfin haɗin fiber ne, yana da sauƙin haɗawa da zaren watsawa.
3. Ingantaccen juyar da makamashi. Tushen EDF ya fi na zare mai watsawa ƙanƙanta, kuma ana watsa hasken sigina da hasken famfo a lokaci guda a cikin EDF, don haka ƙarfin gani yana da ƙarfi sosai. Wannan yana sa hulɗar da ke tsakanin haske da matsakaicin ribar Er ion ta cika sosai, tare da tsawon da ya dace na zaren da aka yi da erbium, don haka ingancin juyar da makamashin haske yana da yawa.
4. Babban riba, ƙarancin amo, babban ƙarfin fitarwa, ƙarancin magana tsakanin tashoshi.
5. Halayen riba mai ɗorewa: EDFA ba ta da saurin kamuwa da zafin jiki, kuma riba ba ta da alaƙa da polarization.
6. Siffar riba ba ta dogara da tsarin bit rate da tsarin bayanai ba.
kasawa
1. Tasirin da ba na layi ba: EDFA yana ƙara ƙarfin gani ta hanyar ƙara ƙarfin gani da aka saka a cikin zare, amma mafi girma ya fi kyau. Idan aka ƙara ƙarfin gani zuwa wani mataki, tasirin da ba na layi ba na zare zai fito. Saboda haka, lokacin amfani da amplifiers na zare, ya kamata a kula da ƙimar sarrafa ƙarfin gani na zare mai tashoshi ɗaya.
2. An gyara kewayon tsawon ƙarfin amfani: kewayon tsawon ƙarfin aiki na EDFA mai lamba C shine 1530nm ~ 1561nm; Matsakaicin tsawon ƙarfin aiki na EDFA mai lamba L shine 1565nm ~ 1625nm.
3. Bandwidth mara daidaito: Bandwidth na ribar EDFA erbium-doped fiber amplifier yana da faɗi sosai, amma gain spectrum na EDF da kansa ba shi da faɗi. Dole ne a yi amfani da matatar flattening gain don daidaita gain a cikin tsarin WDM.
4. Matsalar fitowar haske: Idan hanyar haske ta zama ta al'ada, ions ɗin erbium da hasken famfo ke motsa su za su tafi da hasken sigina, don haka za su kammala faɗaɗa hasken sigina. Idan aka rage hasken shigarwa, saboda ions ɗin erbium masu narkewa suna ci gaba da taruwa, da zarar an dawo da shigar hasken sigina, makamashi zai yi tsalle, wanda zai haifar da ƙaruwar haske.
5. Mafita ga haɓakar hasken ido shine a aiwatar da aikin rage ƙarfin gani ta atomatik (APR) ko kashe wutar gani ta atomatik (APSD) a cikin EDFA, wato, EDFA yana rage wutar ta atomatik ko kuma yana kashe wutar ta atomatik lokacin da babu hasken shigarwa, ta haka yana danne faruwar lamarin ƙaruwar hasken.
Yanayin aikace-aikace
1. Ana amfani da Amplifier mai ƙarfafawa don ƙara ƙarfin siginar tsawon rai da yawa bayan raƙuman ƙarfafawa, sannan a watsa su. Tunda ƙarfin siginar bayan raƙuman ƙarfafawa gabaɗaya yana da girma, ma'aunin hayaniya da ƙaruwar amplifier mai ƙarfi ba su da yawa. Yana da ƙarfin fitarwa mai yawa.
2. Ana amfani da na'urar ƙara girman layi, bayan na'urar ƙara ƙarfin lantarki, don rama asarar watsa layin lokaci-lokaci, gabaɗaya yana buƙatar ƙaramin ma'aunin hayaniya da babban ƙarfin gani.
3. Mai Rarrabawa Kafin Na'urar: Kafin mai rabawa da kuma bayan na'urar ƙara girman layi, ana amfani da shi don ƙara girman siginar da inganta ƙarfin mai karɓar (idan rabon siginar-zuwa-hayaniya (OSNR) ya cika buƙatun, babban ƙarfin shigarwa zai iya danne hayaniyar mai karɓar da kansa kuma ya inganta ƙarfin karɓar), kuma ma'aunin hayaniyar yana da ƙanƙanta sosai. Babu babban buƙata akan ƙarfin fitarwa.
Lokacin Saƙo: Maris-17-2025