Inkcazo: I-Erbium-doped fiber Amplifier EDFA Optical Amplifier

Inkcazo: I-Amplifier yefayibha efakwe i-ErbiumIsandisi-lizwi se-EDFA Optical

I-amplifier yefayibha ye-optical efakwe i-Erbium (I-EDFA, oko kukuthi, i-optical signal amplifier ene-Er3 + doped kwi-fiber core ngokusebenzisa i-signal) yi-optical amplifier yokuqala eyaphuhliswa yiYunivesithi yaseSouthampton ngo-1985, kwaye yenye yezona zinto ziphambili ekuphuhlisweni kwe-optical fiber communication. I-Erbium-doped fiber luhlobo lwe-fiber olunenani elincinci le-erbium (Er) element element engaqhelekanga kwi-quartz fiber, eyi-core yeIsikhulisi sefayibha esifakwe i-ErbiumUkususela ngasekupheleni kweminyaka yoo-1980, kuye kwenziwa uphando olukhulu ngee-amplifiers zefayibha ezifakwe i-erbium. Itekhnoloji ye-WDM iwandise kakhulu amandla onxibelelwano lwefayibha ye-optical. Yeyona amplifier ye-optical esetyenziswa kakhulu kunxibelelwano lwefayibha ye-optical.

Isixhobo sokusebenza: I-optical fiber amplifier sisixhobo se-optical amplifier esandisa ngokuthe ngqo isignali ye-optical kwinkqubo yonxibelelwano lwe-optical fiber. Kwinkqubo yonxibelelwano esebenzisa i-optical fiber, yiteknoloji eyandisa ngokuthe ngqo isignali ye-optical ngaphandle kokuguqula isignali ye-optical ibe yisignali yombane. I-Erbium-doped fiber amplifier (EDFA Optical Amplifier, oko kukuthi, i-optical signal amplifier ene-erbium ion Er3 + kwi-fiber core ngokusebenzisa isignali) yi-optical amplifier yokuqala eyenziwe yiYunivesithi yaseSouthampton e-United Kingdom kunye neYunivesithi yaseTohoku yaseJapan, yenye yezona zinto ziphambili ekuphuhlisweni kwe-optical fiber. I-Erbium-doped fiber luhlobo lwe-fiber olunenani elincinci le-rare earth element erbium (Er) ions kwi-quartz fiber, eyi-core ye-Erbium-doped fiber amplifier. Ukususela ngasekupheleni kweminyaka yoo-1980, kuye kwenziwa iimpumelelo ezinkulu kuphando lwe-erbium-doped fiber amplifier. Itekhnoloji ye-WDM inyuse kakhulu amandla onxibelelwano lwe-optical fiber. Yeyona amplifier ye-optical esetyenziswa kakhulu kunxibelelwano lwe-optical fiber.

Ipharamitha esisiseko

Igama legama: I-amplifier yefayibha efakwe i-Erbium

Igama elinxulumeneyo:Isandisi-lizwi sokubona

I-Quartz fiber enezinto ezinqabileyo zomhlaba (ezifana ne-Nd, Er, Pr, Tm, njl.njl.) inokwenza inkqubo yelaser enamanqanaba amaninzi, kwaye ikhulise ngokuthe ngqo ukukhanya kwesignali yokufaka phantsi kwesenzo sokukhanya kwepompo. Emva kokubonelela ngempendulo efanelekileyo, i-fiber laser iyakhiwa. Ubude bomda wokusebenza we-ND-doped fiber amplifier yi-1060nm kunye ne-1330nm, kodwa uphuhliso kunye nokusetyenziswa kwayo kunqunyelwe ngenxa yokuphambuka kwizibuko elifanelekileyo lonxibelelwano lwefayibha kunye nezinye izizathu. Ubude bomda wokusebenza we-EDFA kunye ne-PDFA bukwisithuba esiphantsi sokulahleka (1550nm) kunye nobude bomda wokusabalalisa (1300nm) ngokulandelelana, kwaye i-TDFA isebenza kwi-S-band, efanelekileyo kakhulu kwiinkqubo zonxibelelwano lwefayibha ye-optical. Ingakumbi i-EDFA, uphuhliso olukhawulezayo, luye lwaba luncedo.

Ngokusekelwe kuphuhliso lwefayibha enee-erbium, ii-amplifiers ezintsha ezininzi ziyaqhubeka nokuvela. Umzekelo, i-dual-band fiber amplifier (DBFA) esekelwe kwifayibha enee-erbium yi-broadband optical amplifier, kwaye i-broadband inokugubungela phantse lonke i-wavelength division multiplexing (WDM). Imveliso efanayo yi-ultra-wideband optical amplifier (UWOA), ene-bandwidth yokugubungela ukukhulisa ukuya kuthi ga kwiitshaneli ze-wavelength ezili-100 kwifayibha enye.

Ukusetyenziswa okusebenzayo

Ukusetyenziswa kwe-Erbium-doped fiber amplifier (EDFA Amplifier) ​​kwinkqubo yonxibelelwano yedijithali ye-optical fiber eqhelekileyo kunokonga ii-optical Repeaters ezininzi, kwaye umgama we-relay uyanda kakhulu, nto leyo ebaluleke kakhulu kwinkqubo ye-long distance cable trunk.

Izicelo zayo eziphambili ziquka:

1, ingasetyenziswa njenge-amplifier yomgama wokukhanya. Ii-Repeaters ze-electronic fiber optic zemveli zinemida emininzi. Umzekelo, xa isignali yedijithali kunye nesignali ye-analog ziguqulwa zibe zezinye, i-repeater kufuneka itshintshwe ngokufanelekileyo; Xa izixhobo zitshintsha ukusuka kwisantya esiphantsi ukuya kwisantya esiphezulu, i-repeater kufuneka itshintshwe ngokufanelekileyo. Zidlulisela kuphela ubude obufanayo besignali yokukhanya, kwaye isakhiwo siyinkimbinkimbi, sibiza kakhulu, njalo njalo. Ii-amplifiers zefayibha ezifakwe kwi-Erbium ziyazoyisa ezi ntsilelo, azipheleli nje ekubeni zitshintshe ngotshintsho lwemo yesignali, kodwa azifuneki zitshintshwe xa izixhobo zandisiwe okanye zisetyenziselwa i-optical wavelength division multiplexing.

2, ingasetyenziswa njenge-optical transmitter post amplifier kunye ne-optical receiver preamplifier. Njenge-post amplifier ye-optical transmitter, amandla okudlulisa e-laser anokonyuswa ukusuka kwi-0db ukuya kwi-+10db. Xa isetyenziswa njenge-preamplifier ye-optical receiver, uvakalelo lwayo lunokuphuculwa kakhulu. Ke ngoko, zi-amplifier ezi-1-2 ze-erbium ezibekwe kumgca, kwaye umgama wokudlulisa isignali unokwandiswa nge-100-200km.

Ukongeza, i-amplifier yefayibha efakwe i-erbium (Isandisi-lizwi se-EDFA) ukusombulula ingxaki. Iingenelo ezikhethekileyo zee-amplifiers ze-Erbium-doped fiber ziye zaqatshelwa lihlabathi, kwaye ziye zasetyenziswa kakhulu. Nangona kunjalo, ii-amplifiers ze-Erbium-doped fiber nazo zinemida ethile. Umzekelo, kunxibelelwano olude alunakubakho phezulu nasezantsi, unxibelelwano lweshishini lesitishi lunzima ngakumbi, akukho lula ukufumana iimpazamo, ubomi bomthombo wokukhanya kwepompo abude, ngenkqubela phambili eqhubekayo yobuchwepheshe bonxibelelwano lwe-optical fiber, ezi ngxaki ziya kusonjululwa ngokwanelisayo.