Erbium-Dope Fibre Amplifiers (EDFAs)

Erbium-Dope fibre amplifier (EDFAs) ikoresha ibintu bidasanzwe-isi nka erbium (Er3 +) nkibikoresho byongera imbaraga.Yinjijwe muri fibre yibanze mugihe cyo gukora.Igizwe nigice gito cya fibre (mubisanzwe m 10 cyangwa irenga) ikozwe mubirahuri aho hongeweho urugero ruto rwa erbium nka dopant muburyo bwa ion (Er3 +).Rero, fibre ya silika ikora nkibikoresho byakiriwe.Nibwo dopants (erbium) aho kuba fibre ya silika igena uburebure bwimikorere yumurongo hamwe ninyungu zingana.EDFAs muri rusange ikorera mukarere ka 1550 nm yumurambararo kandi irashobora gutanga ubushobozi burenze 1 Tbps.Rero, zikoreshwa cyane muri sisitemu ya WDM.

Ihame ryo gusohora imyuka irakoreshwa muburyo bwo kongera ingufu za EDFA.Iyo dopant (ion ya erbium) iri mumbaraga zingufu nyinshi, foton yibyabaye byerekana ibimenyetso byinjira byinjira bizabishishikaza.Irekura zimwe mu mbaraga zayo kuri dopant hanyuma igasubira mu mbaraga nkeya (“imyuka ihumanya ikirere”) ihagaze neza.Igishushanyo gikurikira kirerekana imiterere shingiro ya EDFA.

1.1 Imiterere shingiro ya EDFA

Ububiko bwa pompe laser diode mubisanzwe bitanga ibimenyetso bya optique yuburebure bwumuraba (kuri 980 nm cyangwa 1480 nm) ku mbaraga nyinshi (~ 10–200 mW).Iki kimenyetso cyahujwe nicyapa cyinjiza cyumucyo mugice cya erbiumdoped ya fibre silika binyuze muri WDM.Iyoni ya erbium izakuramo ingufu za signal ya pompe hanyuma isimbukire kumiterere yabo yishimye.Igice cyibisohoka byerekana urumuri rwakubiswe kandi rugaburirwa mugihe cyo kwinjiza pompe ya laser binyuze mumashanyarazi ya optique na detector.Ibi bikora nkibisubizo byububasha bwo kugenzura kugirango EDFAs ibe yigenga.Iyo electron zose zipima zikoreshwa noneho ntayindi amplification ibaho.Kubwibyo, sisitemu ihagaze neza kuko ibisohoka optique ya EDFA ikomeza kuba hafi hatitawe ku kwinjiza ingufu zahindutse, niba zihari.

1.2 Igishushanyo mbonera cyimikorere ya EDFA

Igishushanyo cyavuzwe haruguru cyerekana igishushanyo mbonera cyimikorere ya EDFA aho ikimenyetso cya pompe kiva kuri laser kongerwaho ibimenyetso byinjira (kuri 1480 nm cyangwa 980 nm) binyuze muri WDM.

Iki gishushanyo cyerekana ibyingenzi byingenzi bya EDF.Uburebure bwikimenyetso cya pompe (hamwe nimbaraga za pompe zingana na mW 50) ni 1480 nm cyangwa 980 nm.Bimwe mubice byikimenyetso cya pompe byimuriwe mubimenyetso byinjiza optique byatewe no gusohora imyuka muburebure buke bwa fibre ya Erbium.Ifite inyungu nziza ya optique ya 5-15 dB hamwe numubare wurusaku ruri munsi ya 10 dB.Kubikorwa 1550 nm, birashoboka kubona 30-40 dB inyungu nziza.

1.3 Gushyira mubikorwa EDFA

Igishushanyo cyavuzwe haruguru cyerekana imikorere yoroshye ya EDFA nuburyo bufatika iyo ikoreshejwe muri porogaramu ya WDM.

Nkuko bigaragara, ikubiyemo ibice byingenzi bikurikira:

• Akato ku kwinjiza.Ibi bituma urusaku rwatewe na EDFA idakwirakwiza yerekeza kumpera.

• Umuyoboro wa WDM.Ihuza imbaraga nkeya 1550 nm ya optique yamakuru yinjiza hamwe nibimenyetso byinshi byo kuvoma optique (biva mumasoko ya pompe nka laser) kuri 980 nm yumuraba.

• Agace gato ka erbium-yuzuye silika fibre.Mubyukuri, ibi bikora nkibikoresho bikora bya EDFA.

• Akato ku bisohoka.Ifasha gukumira ibimenyetso byose byerekana optique byinjira muri fibre ya silika ya erbium.

Ikimenyetso cya nyuma gisohoka ni 1550 nm yumurongo wa optique yamakuru ya optique hamwe nibisigisigi bya 980 nm bya pompe ya pompe.

Ubwoko bwa Erbium-Dope Fibre Amplifiers (EDFAs)

Hariho ubwoko bubiri bwimiterere ya Erbium-Doped Fibre Amplifiers (EDFAs):

• EDFA hamwe na pompe ikwirakwiza

• EDFA hamwe na pompe ikwirakwiza

Igishushanyo gikurikira kirerekana pompe ikwirakwiza pompe hamwe na pompe yuburyo bubiri ishobora gukoreshwa muburyo bwa EDFA.

Gahunda zitandukanye za pompe

Gukwirakwiza pompe EDFA iragaragaza imbaraga zisohoka optique hamwe n urusaku ruke;mugihe pompe ikwirakwiza pompe EDFA itanga umusaruro mwinshi optique ariko ikabyara urusaku runini.Mubikorwa bisanzwe byubucuruzi EDFA, pompe yibyerekezo hamwe hamwe icyarimwe hamwe no gukwirakwiza pompe ikoreshwa bivamo inyungu nziza ya optique.

Gushyira mu bikorwa EDFA nka booster, kumurongo, na pre-amplifier

Mubikorwa birebire byoguhuza itumanaho rya fibre optique, EDFAs irashobora gukoreshwa nkibikoresho byongerera imbaraga imbaraga ziva mumashanyarazi ya optique, umurongo wa optique wongerera imbaraga hamwe na fibre optique kimwe na pre-amplifier mbere gato ya uwakira, nkuko bigaragara ku gishushanyo cyavuzwe haruguru.

Twabibutsa ko kumurongo EDFAs ishyirwa kuri kilometero 20-100 zitandukanye bitewe no gutakaza fibre.Ikimenyetso cyo kwinjiza optique kiri kuri 1.55 μ m z'uburebure, mugihe pompe ya pompe ikora kuri 1.48 mm cyangwa 980 nm.Uburebure busanzwe bwa fibre ya Erbium ni metero 10-50.

Uburyo bwa Amplification Mechanism muri EDFAs

Nkuko byavuzwe haruguru, uburyo bwo kongera imbaraga muri EDFA bushingiye ku myuka ihumanya ikirere nkiya laser.Ingufu nyinshi zituruka ku kimenyetso cya pompe optique (cyakozwe nizindi lazeri) gishimisha ion dopant erbium ion (Er3 +) muri fibre ya silika kuri reta yo hejuru.Iyinjiza rya optique yamakuru yamakuru atera inzibacyuho yishimye ya Erbium ion kuri reta yo hasi kandi bikavamo imirasire ya fotone ifite ingufu zimwe, ni ukuvuga uburebure bwumurambararo nkubwa signal optique.

Igishushanyo-cy'ingufu: Ubusa Erbium ion yerekana urwego rwihariye rwingufu zingufu.Iyo ion ya Erbium yinjijwe muri fibre ya silika, buri rwego rwingufu zabo zigabanyijemo urwego rwinshi rufitanye isano kugirango bibe umurongo wingufu.

1.4 Uburyo bwo kongera imbaraga muri EDFA

Kugirango ugere ku ihindagurika ryabaturage, Er3 + ion zipompwa kurwego rwagati 2. Muburyo butaziguye (kuvoma 980-nm), Er3 + ion zikomeza kwimurwa kuva kurwego rwa 1 kugeza kurwego 3. Bikurikirwa no kutangirika kumirasire kugera kurwego rwa 2, kuva aho zigwa kurwego rwa 1, zerekana ibimenyetso bya optique muburebure bwumurongo wa 1500-1600 nm.Ibi bizwi nkuburyo bwa 3 bwo kongera imbaraga.

Kubindi bicuruzwa byinshi bya Erbium, nyamuneka reba kurubuga rwacu.

https://www.erbiumtechnology.com/erbium-laser-glasseye-safe-laser-glass/

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