I-Erbium-Doped Fiber Amplifiers (EDFAs)

Ama-Erbium-doped fiber amplifiers (EDFAs) asebenzisa izakhi zomhlaba eziyivelakancane njenge-erbium (Er3+) njengendawo yokukhulisa izwi.Ifakwa ku-fiber core phakathi nenqubo yokukhiqiza.Iqukethe ucezu olufushane lwefayibha (imvamisa eyi-10 m noma ngaphezulu) eyenziwe ngengilazi lapho inani elincane elilawulwayo le-erbium lengezwa njenge-dopant ngesimo se-ion (Er3+).Ngakho-ke, i-silica fiber isebenza njenge-host medium.Ama-dopants (i-erbium) kune-silica fibre enquma ubude begagasi obusebenzayo kanye nomkhawulokudonsa wokuzuza.Ama-EDFA ngokuvamile asebenza endaweni engu-1550 nm wavelength futhi anganikeza amandla angaphezu kuka-1 Tbps.Ngakho-ke, asetshenziswa kabanzi ezinhlelweni ze-WDM.

Umgomo wokukhishwa okukhuthazwayo uyasebenza endleleni yokukhulisa i-EDFA.Uma i-dopant (i-erbium ion) isesimweni samandla aphezulu, i-photon yesigameko yesignali yokubona okokufaka izoyishukumisa.Ikhulula amanye amandla ayo ku-dopant futhi ibuyela esimweni samandla aphansi ("ukukhishwa okuthuthukisiwe") esizinzile.Isibalo esingezansi sibonisa isakhiwo esiyisisekelo se-EDFA.

1.1 Isakhiwo esiyisisekelo se-EDFA

I-laser diode yepompo ngokuvamile ikhiqiza isignali yokubona yobude begagasi (kungaba ngu-980 nm noma 1480 nm) ngamandla aphezulu (~ 10–200 mW).Le siginali ihlanganiswe nesignali yokufaka ukukhanya engxenyeni ye-erbiumdoped ye-silica fiber ngokusebenzisa i-coupler ye-WDM.Ama-ion e-erbium azomunca la mandla esignali yepompo futhi agxumele esimweni sawo sokujabula.Ingxenye yesiginali yokukhanya ephumayo ithintwa futhi ibuyiselwe ngokokufaka kwe-laser yepompo ngesihlungi esibonakalayo nomtshina.Lokhu kusebenza njengendlela yokulawula amandla empendulo ukuze kwenziwe ama-EDFA njengama-amplifiers azilawulayo.Lapho wonke ama-electron e-metastable esetshenziswa akukho-amplification eyengeziwe eyenzekayo.Ngakho-ke, isistimu iyazinza ngokuzenzakalelayo ngenxa yokuthi amandla okukhanya okukhiphayo e-EDFA ahlala ehlala njalo ngokunganaki ukushintshashintsha kwamandla okufakwayo, uma kukhona.

1.2 Uhlelo lokusebenza olulula lwe-EDFA

Isibalo esingenhla sibonisa isikimu esilula sokusebenza se-EDFA lapho isignali yepompo evela ku-laser yengezwa kusignali yokubona okokufaka (ku-1480 nm noma 980 nm) nge-coupler ye-WDM.

Lo mdwebo ubonisa i-amplifier ye-EDF eyisisekelo.Ubude begagasi besignali yepompo (namandla wepompo angaba ngu-50 mW) ngu-1480 nm noma 980 nm.Ingxenye ethile yale siginali yepompo idluliselwa kusignali yokubona okokufaka ngokukhipha okukhuthazwayo phakathi nobude obufushane befayibha ye-Erbium-doped.Inenzuzo evamile yokubona engaba ngu-5–15 dB kanye nesibalo somsindo esingaphansi kuka-10 dB.Ngokusebenza okungu-1550 nm, kungenzeka ukuthi uthole ukuzuza kokubona okungu-30–40 dB.

1.3 Ukufezekiswa okungokoqobo kwe-EDFA

Isibalo esingenhla sibonisa ukusebenza okwenziwe lula kwe-EDFA nesakhiwo sayo esisebenzayo uma isetshenziswa kuhlelo lwe-WDM.

Njengoba kubonisiwe, kuhlanganisa izingxenye ezilandelayo ezinkulu:

• I-isolator kokokufaka.Lokhu kugcina umsindo okhiqizwa i-EDFA ukuthi ungabhebhetheki ngasekugcineni komthumeli.

• Isixhumi se-WDM.Ihlanganisa isignali yedatha yokufaka yamandla aphansi engu-1550 nm enesignali yokupompa yamandla aphezulu (kusuka emthonjeni wepompo njenge-laser) ku-980 nm wavelength.

• Ingxenye encane ye-erbium-doped silica fiber.Eqinisweni, lokhu kusebenza njengendlela esebenzayo ye-EDFA.

• Isihlukanisi ekuphumeni.Kuyasiza ukuvimbela noma iyiphi isignali yokubona ebheke emuva ukuthi ingangeni ku-erbium-doped silica fiber.

Isignali yokugcina yokuphuma iyisiginali yedatha ye-wavelength ye-wavelength engu-1550 ekhulisiwe enesignali yepompo ye-wavelength engu-980 nm esele.

Izinhlobo zama-Erbium-Doped Fiber Amplifiers (EDFAs)

Kunezinhlobo ezimbili zezakhiwo ze-Erbium-Doped Fiber Amplifiers (EDFAs):

• I-EDFA enepompo esakaza ngokuhlanganyela

• I-EDFA enephampu ephikisayo esakaza

Isibalo esingezansi sibonisa amalungiselelo epompo ephikisayo kanye ne-bidirectional pump angasetshenziswa ezakhiweni ze-EDFA.

Amalungiselelo ephampu ahlukene

Ipompo esakaza ngokuhlanganyela i-EDFA ifaka amandla okukhanya aphansi okukhiphayo nomsindo ophansi;kuyilapho iphampu ephikisayo i-EDFA inikeza amandla okukhanya aphezulu okukhiphayo kodwa ikhiqiza umsindo omkhulu futhi.Ku-EDFA yezentengiselwano evamile, iphampu enama-bi-directional ene-propagating co-propagating kanye ne-counter-propagating pumping isetshenziswa okuholela enzuzweni efanayo yokubona.

Ukusetshenziswa kwe-EDFA njenge-booster, in-line, ne-pre-amplifier

Ekusetshenzisweni okude kwesixhumanisi sokuxhumana nge-fiber optical, ama-EDFA angasetshenziswa njenge-booster amplifier ekuphumeni kwesidlulisi sokukhanya, i-in-line optical amplifier kanye ne-optical fibre kanye ne-pre-amplifier ngaphambi nje kwe- umamukeli, njengoba kukhonjisiwe esithombeni esingenhla.

Kungase kuqashelwe ukuthi ama-EDFA akulayini abekwe ebangeni elingamakhilomitha angama-20–100 ngokuhlukana kuye ngokulahleka kwefayibha.Isignali yokufaka yokubona iku-1.55 μm wavelength, kuyilapho amalaser epompo esebenza ku-1.48 μm noma 980 nm wavelength.Ubude obujwayelekile be-Erbium-doped fiber buyi-10-50 m.

I-Amplification Mechanism kuma-EDFAs

Njengoba kushiwo ngaphambili, indlela yokukhulisa i-EDFA isekelwe ekukhishweni okukhuthazwayo okufana nalokho kwe-laser.Amandla aphezulu asuka kusignali yepompo yokubona (ekhiqizwe enye i-laser) ajabulisa ama-ion e-dopant erbium (Er3+) ku-silica fiber endaweni yamandla engaphezulu.Isignali yedatha yokubona okokufaka ikhuthaza ukushintshwa kwama-ion e-Erbium ajabulile aye kusimo samandla aphansi futhi iphumela emisebeni yama-photon enamandla afanayo, okungukuthi, ubude begagasi obufanayo nalolo lwesignali yokubona okokufaka.

Umdwebo wezinga lamandla: Ama-ion e-Erbium amahhala abonisa amazinga ahlukene ebhendi yamandla.Lapho ama-ion e-Erbium efakwa ku-silica fiber, ngalinye lezinga lamandla lawo lihlukana libe inani lamazinga ahlobene eduze ukuze kwakheke ibhande lamandla.

1.4 Indlela yokukhulisa amandla ku-EDFA

Ukuthola ukuguquguquka kwenani labantu, ama-ion Er3+ ampontshelwa ezingeni eliphakathi nendawo 2. Ngendlela engaqondile (ukumpompa okungu-980-nm), ama-ion e-Er3+ asuswa ngokuqhubekayo ukusuka ku-leveli 1 ukuya kuleveli 3. Kulandelwa ukubola okungakhiqizi imisebe kuye kuleveli 2, ukusuka ku-2. lapho ziwela khona ezingeni 1, zikhipha amasignali okukhanya kubude obufunayo obungu-1500–1600 nm.Lokhu kwaziwa njenge-3-level amplification mechanism.

Ukuze uthole eminye imikhiqizo ye-Erbium-doped, sicela ubheke kuwebhusayithi yethu.

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

I-imeyili:devin@erbiumtechnology.com

WhatsApp: +86-18113047438

Ifeksi: +86-2887897578

Engeza: No.23, Chaoyang road, Xihe street, Longquanyi distrcit, Chengdu,610107, China.