Ama-amplifiers optical emkhakheni wokuxhumana kwe-fiber optical

Ama-amplifiers optical emkhakheni wokuxhumana kwe-fiber optical

An i-optical amplifieriyithuluzi elikhulisa amasignali okubona. Emkhakheni wokuxhumana kwe-fiber optical, idlala ikakhulukazi izindima ezilandelayo: 1. Ukuthuthukisa nokukhulisa amandla optical. Ngokubeka i-amplifier optical ekugcineni kwe-transmitter optical, amandla optical angena ku-fiber angandiswa. 2. Ukukhulisa i-relay ku-inthanethi, ukufaka esikhundleni Iziphindaphinda ezikhona ezinhlelweni zokuxhumana zefiber optical; 3. Ukwandiswa kusengaphambili: Ngaphambi komtshina wesithombe ekugcineni kokwamukela, isignali yokukhanya ebuthakathaka ikhuliswa kusengaphambili ukuze kuthuthukiswe ukuzwela kokwamukela.

Njengamanje, ama-amplifiers e-Optical asetshenziswa ekuxhumaneni kwe-Optical fiber ikakhulukazi ahlanganisa lezi zinhlobo ezilandelayo: 1. I-Semiconductor Optical amplifier (I-SOA Optical amplifier)/Semiconductor laser amplifier (SLA Optical amplifier); 2. Izikhulisamandla ze-fiber ezifakwe emhlabeni ezingavamile, njengezikhulisi ze-fiber-doped fibre (I-EDFA Optical amplifier), njll. 3. Izikhulisi ze-fiber ezingaqondile, njengezikhulisi ze-fiber Raman, njll. Okulandelayo isingeniso esifushane ngokulandelana.

I-1.I-Semiconductor optical amplifiers: Ngaphansi kwezimo ezihlukene zohlelo lokusebenza kanye nokubukeka okuhlukile kobuso bokuphela, ama-lasemiconductor lasers angakhiqiza izinhlobo ezihlukahlukene ze-semiconductor optical amplifiers. Uma ukushayela kwe-laser semiconductor kungaphansi komkhawulo wayo, okungukuthi, akukho laser ekhiqizwayo, ngalesi sikhathi, isignali ye-optical ifakwa ekugcineni. Uma nje imvamisa yalesi siginali ye-optical iseduze nendawo ye-spectral ye-laser, izokhuliswa futhi ikhishwe komunye umkhawulo. Lolu hloboi-semiconductor optical amplifieribizwa ngokuthi i-Fabry-Perrop yohlobo lwe-optical amplifier (FP-SLA). Uma i-laser ichemile ngaphezu komkhawulo, okokufaka kwesignali yemodi eyodwa okubuthakathaka okubuthakathaka kusuka ekugcineni, inqobo nje uma imvamisa yale siginali yokubona ingaphakathi kwe-spectrum yale laser ye-multimode, isignali yokubona izokhuliswa futhi ikhiyelwe kumodi ethile. Lolu hlobo lweamplifier optical lubizwa nge-injection-locked type amplifier (IL-SLA). Uma iziphetho ezimbili ze-laser ye-semiconductor zimbozwe ngesibuko noma zihwamuke ngongqimba lwefilimu ephikisayo, okwenza ukukhishwa kwayo kube kuncane kakhulu futhi kungakwazi ukwenza i-Fabry-Perrow resonant cavity, lapho isignali ye-optical idlula ungqimba olusebenzayo lwe-waveguide, izokhuliswa ngenkathi ihamba. Ngakho-ke, lolu hlobo lwe-amplifier optical lubizwa ngokuthi i-wave wave type optical amplifier (TW-SLA), futhi ukwakheka kwayo kuboniswa esithombeni esilandelayo. Ngenxa yokuthi umkhawulokudonsa wohlobo lwe-wave wave amplifier optical oda ama-oda amathathu amakhulu kunalowo we-Fabry-Perot amplifier, futhi umkhawulokudonsa wayo ongu-3dB ungafinyelela ku-10THz, ungakhulisa amasignali okubona amaza ahlukahlukene futhi iyisikhulisamazwi esithembisa kakhulu.

2. Isikhulisi se-fiber-doped fibre: Sinezingxenye ezintathu: Eyokuqala i-doped fiber enobude obusuka kumamitha amaningana kuya emashumini amamitha. Lokhu kungcola ama-ion asemhlabeni ayivelakancane, akha i-laser activation material; Owesibili umthombo wephampu ye-laser, ohlinzeka ngamandla amaza obude obufanele ukujabulisa ama-ion omhlaba angavamile ukuze kuzuzwe ukukhuliswa kokukhanya. Eyesithathu i-coupler, eyenza ukukhanya kwephampu nokukhanya kwesignali kuhambisane nento esebenza nge-doped optical fiber. Umgomo wokusebenza we-fiber amplifier ufana kakhulu nelaser yesimo esiqinile. Idala isimo sokusabalalisa inombolo yezinhlayiya ehlehlisiwe ngaphakathi kwempahla eyenziwe nge-laser futhi ikhiqize imisebe evuselelwe. Ukuze udale isimo sokusabalalisa inombolo yezinhlayiya ezizinzile, amaleveli wamandla angaphezu kwamabili kufanele abandakanywe ekuguqukeni kokubona, ngokuvamile amasistimu amaleveli amathathu namane, ngokunikezwa okuqhubekayo kwamandla asuka emthonjeni wephampu. Ukuze unikeze amandla ngokuphumelelayo, ubude be-waveleng be-pump photon kufanele bube bufushane kunalelo le-laser photon, okungukuthi, amandla e-pump photon kufanele abe makhulu kunalawo e-laser photon. Ngaphezu kwalokho, i-cavity ye-resonant yenza impendulo enhle, futhi ngaleyo ndlela i-amplifier ye-laser ingakhiwa.

3. Ama-amplifiers e-fiber angaqondile: Kokubili ama-amplifiers e-fiber angaqondile kanye nama-erbium fiber amplifiers awela ngaphansi kwesigaba se-fiber amplifiers. Kodwa-ke, eyokuqala isebenzisa umthelela ongaqondile wemicu ye-quartz, kanti eyakamuva isebenzisa ama-erbium-doped quartz fibers ukuze isebenze kumidiya esebenzayo. Izintambo ezibonakalayo ze-quartz ezijwayelekile zizokhiqiza imiphumela eqinile engaqondile ngaphansi kwesenzo sokukhanya kwepompo okuqinile kwamaza afanele, njengokuhlakazeka kwe-Raman (SRS), ukuhlakazeka kwe-Brillouin okuvuselelwe (i-SBS), kanye nemiphumela yokuxuba amagagasi amane. Uma isignali idluliswa nge-fiber optical kanye nokukhanya kwepompo, ukukhanya kwesignali kungakhuliswa. Ngakho-ke, bakha ama-amplifiers e-fiber Raman (FRA), ama-amplifiers e-Brillouin (FBA), nama-parametric amplifiers, konke okungama-fiber amplifiers asabalalisiwe.

Isifinyezo: Isiqondiso esivamile sokuthuthukiswa kwawo wonke ama-optical amplifiers inzuzo ephezulu, amandla okukhipha okuphezulu, kanye nenani eliphansi lomsindo.