Mfundo ndi kagwiritsidwe ntchito kaEDFA erbium-doped fiber amplifier
Mapangidwe oyambira aEDFAerbium-doped fiber amplifier, yomwe imapangidwa makamaka ndi sing'anga yogwira (mamita angapo kutalika kwa doped quartz fiber, core mainchesi 3-5 microns, doping concentration (25-1000) x10-6), gwero la kuwala kwa mpope (990 kapena 1480nm LD), cholumikizira chowoneka bwino komanso chopatula chamaso. Kuwala kwa siginecha ndi kuwala kwapampu kumatha kufalikira mbali imodzi (kupopa kophatikizana), kosiyana (kupopera kobwerera), kapena mbali zonse ziwiri (kupopa kwapawiri) mu fiber Erbium. Pamene kuwala kwa chizindikiro ndi kuwala kwa mpope kumalowetsedwa mu fiber ya erbium panthawi imodzimodziyo, ion erbium imakondwera ndi mlingo wapamwamba wa mphamvu (dongosolo la magawo atatu) pansi pa ntchito ya kuwala kwa mpope, ndipo posakhalitsa imavunda mpaka kufika pamtunda. Pamene ikubwerera ku nthaka pansi pa zochitika za kuwala kwa chizindikiro cha chochitika, chithunzi chofanana ndi kuwala kwa chizindikiro chimatulutsidwa, kotero kuti chizindikirocho chikule. Sipekitiramu yake yowonjezereka yodzidzimutsa (ASE) imakhala ndi bandwidth yayikulu (mpaka 20-40nm) ndipo ili ndi nsonga ziwiri zogwirizana ndi 1530nm ndi 1550nm motsatana.
Ubwino waukulu waEDFA amplifierndi kupindula kwakukulu, bandwidth yayikulu, mphamvu yotulutsa kwambiri, kupopera bwino kwambiri, kutayika kotsika, komanso kusamva kumayiko a polarization.
Mfundo yogwiritsira ntchito erbium-doped fiber amplifier
Erbium-doped fiber amplifier.EDFA Optical Amplifier） amapangidwa makamaka ndi erbium-doped CHIKWANGWANI (pafupifupi 10-30m m'litali) ndi gwero la kuwala kwa pampu. Mfundo yogwira ntchito ndi yakuti erbium-doped fiber imapanga ma radiation olimbikitsa pansi pa mphamvu ya kuwala kopopera (wavelength 980nm kapena 1480nm), ndipo kuwala kowala kumasintha ndi kusintha kwa chizindikiro cha kuwala kolowera, komwe kuli kofanana ndi kukulitsa chizindikiro cha kuwala kolowera. Zotsatira zikuwonetsa kuti kupindula kwa Erbium-doped fiber amplifier nthawi zambiri kumakhala 15-40db, ndipo mtunda wa relay ukhoza kuonjezedwa kuposa 100km. Chifukwa chake, anthu sangachitire mwina koma kufunsa: chifukwa chiyani asayansi adaganiza zogwiritsa ntchito doped erbium mu fiber amplifier kuti awonjezere mphamvu ya mafunde a kuwala? Tikudziwa kuti erbium ndi chinthu chosowa padziko lapansi, ndipo zinthu zapadziko lapansi zosowa zimakhala ndi mawonekedwe ake apadera. Doping zinthu zapadziko lapansi zomwe sizipezeka pazida zowoneka bwino zakhala zikugwiritsidwa ntchito kwa nthawi yayitali kuti ziwongolere magwiridwe antchito a zida zowoneka bwino, kotero izi sizongochitika mwangozi. Kuphatikiza apo, chifukwa chiyani kutalika kwa gwero la kuwala kwa mpope kumasankhidwa pa 980nm kapena 1480nm? M'malo mwake, kutalika kwa gwero la kuwala kwa pampu kumatha kukhala 520nm, 650nm, 980nm, ndi 1480nm, koma chizolowezi chatsimikizira kuti kutalika kwa 1480nm pampu kuwala gwero la laser ndikokwera kwambiri, kutsatiridwa ndi kutalika kwa 980nm pampu gwero lowala.
Kapangidwe ka thupi
Kapangidwe kake ka erbium-doped fiber amplifier (EDFA Optical Amplifier) Pali odzipatula pamapeto athandizira ndi kutha linanena bungwe, cholinga ndi kupanga kuwala chizindikiro kufala njira imodzi. The pump exciter ili ndi kutalika kwa 980nm kapena 1480nm ndipo imagwiritsidwa ntchito popereka mphamvu. Ntchito ya coupler ndikugwirizanitsa chizindikiro cha kuwala ndi kuwala kwa mpope mu erbium-doped fiber, ndi kusamutsa mphamvu ya kuwala kwa mpope kupita ku siginecha yamagetsi yolowera kudzera muzochita za erbium-doped fiber, kuti muzindikire kukulitsa mphamvu kwa chizindikiro cha kuwala. Kuti mupeze mphamvu zowoneka bwino komanso zotsika zaphokoso, Erbium-doped fiber amplifier yomwe imagwiritsidwa ntchito pochita imatengera kapangidwe ka mapampu awiri kapena kuposerapo okhala ndi zodzipatula pakati kuti azidzipatula. Kuti mupeze njira yokulirapo komanso yosalala, fyuluta yowonjezera imawonjezedwa.
EDFA ili ndi zigawo zisanu zazikulu: Erbium-doped fiber (EDF), Optical coupler (WDM), Optical isolator (ISO), Optical Filter, ndi Pumping Supply. Zomwe zimagwiritsidwa ntchito nthawi zambiri zimaphatikizira 980nm ndi 1480nm, ndipo magwero awiriwa amapopa ali ndi mphamvu zambiri zopopera ndipo amagwiritsidwa ntchito kwambiri. Phokoso la phokoso la 980nm pampu ndi lotsika; Gwero la kuwala kwa pampu la 1480nm lili ndi mphamvu zambiri zopopera ndipo limatha kupeza mphamvu zokulirapo (pafupifupi 3dB apamwamba kuposa gwero lowunikira la 980nm).
mwayi
1. Kutalika kwa mawonekedwe ogwiritsira ntchito kumagwirizana ndi zenera lochepetsetsa la single-mode fiber.
2. High kugwirizana dzuwa. Chifukwa ndi fiber amplifier, ndizosavuta kulumikizana ndi ulusi wotumizira.
3. High mphamvu kutembenuka dzuwa. Pakatikati pa EDF ndi yaying'ono kuposa ya fiber yopatsira, ndipo kuwala kwa chizindikiro ndi kuwala kwa mpope zimafalitsidwa nthawi imodzi mu EDF, kotero mphamvu ya kuwala imakhala yokhazikika kwambiri. Izi zimapangitsa kulumikizana pakati pa kuwala ndi kupeza sing'anga Er ion kudzaza kwambiri, kuphatikiza ndi kutalika koyenera kwa erbium-doped fiber, kotero kuti kutembenuka kwamphamvu kwa mphamvu yowunikira kumakhala kwakukulu.
4. Kupindula kwakukulu, kutsika kwa phokoso, mphamvu zazikulu zotulutsa, kutsika kwapakati pakati pa njira.
5. Makhalidwe opindulitsa okhazikika: EDFA sichikhudzidwa ndi kutentha, ndipo kupindula kuli ndi mgwirizano wochepa ndi polarization.
6. The phindu Mbali ndi palokha dongosolo pang'ono mlingo ndi mtundu deta.
chopereŵera
1. Zotsatira zopanda malire: EDFA imakulitsa mphamvu ya kuwala mwa kuwonjezera mphamvu ya kuwala yomwe imayikidwa mu fiber, koma zazikulu zimakhala bwino. Pamene mphamvu ya kuwala ikuwonjezeka kufika pamlingo wina, zotsatira zopanda malire za fiber fiber zidzapangidwa. Chifukwa chake, mukamagwiritsa ntchito ma optical fiber amplifiers, chidwi chiyenera kulipidwa pamtengo wowongolera mphamvu yamagetsi yamagetsi yomwe ikubwera.
2. Kuchuluka kwa kutalika kwa mawonekedwe kumakhazikitsidwa: kutalika kwa mawonekedwe a C-band EDFA ndi 1530nm ~ 1561nm; Kutalika kwa mawonekedwe a L-band EDFA ndi 1565nm ~ 1625nm.
3. Kusamvana kwa bandwidth: The gain bandwidth ya EDFA erbium-doped fiber amplifier ndi yotakata kwambiri, koma phindu la EDF palokha siliri lathyathyathya. Zosefera zochepetsera phindu ziyenera kutengedwa kuti zichepetse phindu mu dongosolo la WDM.
4. Vuto la kuwala kowala: Pamene njira yowunikira imakhala yachibadwa, ma ion a erbium omwe amasangalala ndi kuwala kwa pampu amatengedwa ndi kuwala kwa chizindikiro, motero kukwaniritsa kukulitsa kwa kuwala kwa chizindikiro. Ngati kuwala kolowetsako kwachepetsedwa, chifukwa ma ion a metastable erbium akupitiriza kudziunjikira, pamene kulowetsedwa kwa kuwala kwa chizindikiro kubwezeretsedwa, mphamvu idzalumpha, zomwe zimapangitsa kuti pakhale kuwala.
5. Njira yothetsera kuphulika kwa kuwala ndikuzindikira mphamvu yochepetsera mphamvu (APR) kapena automatic optical power off (APSD) mu EDFA, ndiko kuti, EDFA imachepetsa mphamvu kapena kuzimitsa mphamvu pokhapokha palibe kuwala kolowetsamo, potero kulepheretsa kuchitika kwa zochitika zowonongeka.
Kugwiritsa ntchito
1. Amplifier yolimbikitsa imagwiritsidwa ntchito kupititsa patsogolo mphamvu ya zizindikiro zambiri za kutalika kwa mafunde pambuyo pa chiwongolero chamagetsi, ndikuzitumiza. Popeza mphamvu yama siginecha pambuyo pa funde lachilimbikitso nthawi zambiri imakhala yayikulu, index ya phokoso ndi kupindula kwa amplifier mphamvu sizokwera kwambiri. Ili ndi mphamvu zotulutsa zambiri.
2. Line-amplifier, pambuyo pa Amplifier mphamvu, amagwiritsidwa ntchito nthawi ndi nthawi kubweza kutayika kwa kufalikira kwa Line, komwe kumafunikira kalozera kakang'ono ka phokoso ndi mphamvu yayikulu yotulutsa.
3. Pre-Amplifaya: Pamaso pa splitter komanso pambuyo pa amplifier ya mzere, imagwiritsidwa ntchito kukulitsa chizindikiro ndikuwongolera kukhudzidwa kwa wolandila (ngati chiwonetsero cha optical-to-noise ratio (OSNR) chikukwaniritsa zofunikira, mphamvu yayikulu yolowera imatha kupondereza phokoso la wolandilayo ndikuwongolera kumvera kolandila), ndipo index ya phokoso ndi yaying'ono kwambiri. Palibe chofunikira chachikulu pa mphamvu yotulutsa.
Nthawi yotumiza: Mar-17-2025