Kanjanii-amplifier ye-semiconductor opticalukufeza ukukhuliswa?
Ngemva kokufika kwenkathi yokuxhumana nge-optical fiber enamandla amakhulu, ubuchwepheshe bokukhulisa i-optical buye bathuthuka ngokushesha.Ama-amplifier opticalkhulisa izimpawu zokukhanya ezifakwayo ngokusekelwe emisebeni evuselelwe noma ekusakazeni okuvuselelwe. Ngokomgomo wokusebenza, ama-amplifier optical angahlukaniswa abe ama-amplifier optical e-semiconductor (I-SOA) kanyeizikhulisi zefayibha yokukhanya. Phakathi kwazo,ama-amplifier optical e-semiconductorZisetshenziswa kabanzi ekuxhumaneni kwe-optical ngenxa yezinzuzo ze-wide gain band, ukuhlanganiswa okuhle kanye nobubanzi be-wide wavelength. Zakhiwe yizifunda ezisebenzayo nezingasebenzi, futhi isifunda esisebenzayo yisifunda se-gain. Lapho isignali yokukhanya idlula esifundeni esisebenzayo, ibangela ukuthi ama-electron alahlekelwe amandla futhi abuyele esimweni somhlaba ngesimo sama-photon, anobude obufanayo nesibonakaliso sokukhanya, ngaleyo ndlela andise isignali yokukhanya. I-amplifier ye-optical ye-semiconductor iguqula isithwali se-semiconductor sibe yi-reverse particle nge-driving current, yandisa i-amplitude yokukhanya kwembewu ejojiwe, futhi igcina izici eziyisisekelo zomzimba zokukhanya kwembewu ejojiwe njenge-polarization, ububanzi bomugqa kanye nemvamisa. Ngokukhula kombane osebenzayo, amandla okukhanya okukhiphayo nawo ayanda ebuhlotsheni obuthile bokusebenza.
Kodwa lokhu kukhula akunamingcele, ngoba ama-amplifier e-semiconductor optical ane-gain saturation phenomenon. Lesi simo sibonisa ukuthi lapho amandla okukhanya okufakwayo engaguquki, i-gain iyanda ngokwanda kwe-carrier carrier, kodwa lapho i-injection carrier ikhulu kakhulu, i-gain izogcwala noma yehle. Lapho i-concentration ye-injection carrier ihlala njalo, amandla okukhiphayo ayanda ngokwanda kwamandla okufaka, kodwa lapho amandla okukhanya okufakwayo emakhulu kakhulu, izinga lokusetshenziswa kwe-carrier elibangelwa imisebe evuselelwe likhulu kakhulu, okuholela ekugcwalisweni noma ekwehleni kwe-gain saturation. Isizathu se-gain saturation phenomenon ukusebenzisana phakathi kwama-electron nama-photon endaweni esebenzayo. Kungakhathaliseki ukuthi ama-photon akhiqizwa ku-gain medium noma ama-photon angaphandle, izinga lapho imisebe evuselelwe idla khona i-carriers lihlobene nezinga lapho i-carriers igcwalisa khona ezingeni lamandla elihambisanayo ngesikhathi. Ngaphezu kwemisebe evuselelwe, izinga le-carrier elidliwa ezinye izici nalo liyashintsha, okuthinta kabi i-gain saturation.
Njengoba umsebenzi obaluleke kakhulu wama-amplifier e-optical e-semiconductor uwukukhulisa okuqondile, ikakhulukazi ukuze kufezwe ukukhulisa, kungasetshenziswa njengama-amplifier e-power, ama-amplifier e-line kanye nama-preamplifiers ezinhlelweni zokuxhumana. Emaphethelweni okudlulisa, i-amplifier ye-optical ye-semiconductor isetshenziswa njenge-amplifier yamandla ukuthuthukisa amandla okukhipha ekugcineni kokudlulisa kwesistimu, okungakhulisa kakhulu ibanga lokudlulisela lesiqu sesistimu. Emugqeni wokudlulisa, i-amplifier ye-optical ye-semiconductor ingasetshenziswa njenge-amplifier ye-relay eqondile, ukuze ibanga lokudlulisela elivuselelayo lingandiswa futhi ngokushelela okukhulu. Emaphethelweni okwamukela, i-amplifier ye-optical ye-semiconductor ingasetshenziswa njenge-preamplifier, engathuthukisa kakhulu ukuzwela komamukeli. Izici zokugcwala kwenzuzo zama-amplifier e-optical e-semiconductor zizokwenza ukuthi inzuzo nge-bit ihlobane nochungechunge lwe-bit lwangaphambilini. Umphumela wephethini phakathi kweziteshi ezincane ungabizwa nangokuthi umphumela wokuguqula inzuzo. Le ndlela isebenzisa isilinganiso sezibalo somphumela wokuguqula inzuzo phakathi kweziteshi eziningi futhi yethula igagasi eliqhubekayo eliphakathi enqubweni yokugcina i-beam, ngaleyo ndlela icindezele inzuzo iyonke ye-amplifier. Bese umphumela wokuguqula inzuzo phakathi kweziteshi uncishiswa.
Ama-amplifier e-Semiconductor optical anesakhiwo esilula, ukuhlanganiswa okulula, futhi angakhulisa izimpawu zokukhanya zamaza ahlukahlukene, futhi asetshenziswa kabanzi ekuhlanganisweni kwezinhlobo ezahlukene zama-laser. Njengamanje, ubuchwepheshe bokuhlanganiswa kwe-laser obusekelwe kuma-amplifier e-semiconductor optical buyaqhubeka nokuvuthwa, kodwa kusadingeka kwenziwe imizamo kulezi zici ezintathu ezilandelayo. Esinye ukunciphisa ukulahlekelwa kokuxhuma nge-fiber optical. Inkinga enkulu ye-amplifier ye-semiconductor optical ukuthi ukulahlekelwa kokuxhuma nge-fiber kukhulu. Ukuze kuthuthukiswe ukusebenza kahle kokuxhuma, ilensi ingangezwa ohlelweni lokuxhuma ukuze kuncishiswe ukulahlekelwa kokukhanya, kuthuthukiswe ukulingana kwe-beam, futhi kufezwe ukuxhumanisa okusebenzayo okuphezulu. Esesibili ukunciphisa ukuzwela kwe-polarization kwama-amplifier e-semiconductor optical. Isici se-polarization sibhekisela kakhulu ekuzweleni kwe-polarization kokukhanya kwesigameko. Uma i-amplifier ye-semiconductor optical ingacutshungulwa ngokukhethekile, i-bandwidth esebenzayo yenzuzo izoncishiswa. Isakhiwo se-Quantum well singathuthukisa ngempumelelo ukuzinza kwama-amplifier e-semiconductor optical. Kungenzeka ukutadisha isakhiwo se-quantum well esilula nesiphezulu ukuze kuncishiswe ukuzwela kwe-polarization kwama-amplifier e-semiconductor optical. Esesithathu ukwenza ngcono inqubo ehlanganisiwe. Njengamanje, ukuhlanganiswa kwama-amplifier optical e-semiconductor kanye nama-laser kuyinkimbinkimbi kakhulu futhi kuyakhathaza ekucutshungulweni kobuchwepheshe, okuholela ekulahlekelweni okukhulu ekudlulisweni kwesignali ye-optical kanye nokulahlekelwa kokufakwa kwedivayisi, futhi izindleko ziphezulu kakhulu. Ngakho-ke, kufanele sizame ukwenza ngcono isakhiwo samadivayisi ahlanganisiwe futhi sithuthukise ukunemba kwamadivayisi.
Kubuchwepheshe bokuxhumana kwe-optical, ubuchwepheshe bokukhulisa ukukhanya bungenye yezindlela zobuchwepheshe ezisekelayo, kanti ubuchwepheshe be-amplifier ye-optical ye-semiconductor buthuthuka ngokushesha. Njengamanje, ukusebenza kwama-amplifier e-optical ye-semiconductor kuthuthukiswe kakhulu, ikakhulukazi ekuthuthukisweni kobuchwepheshe be-optical besizukulwane esisha njenge-wavelength division multiplexing noma izindlela zokushintsha ukukhanya. Ngokuthuthuka komkhakha wolwazi, ubuchwepheshe bokukhulisa ukukhanya obufanele amabhendi ahlukene kanye nezinhlelo zokusebenza ezahlukene buzokwethulwa, futhi ukuthuthukiswa nocwaningo lobuchwepheshe obusha kuzokwenza ubuchwepheshe be-amplifier ye-optical ye-semiconductor buqhubeke nokuthuthuka nokuchuma.
Isikhathi sokuthunyelwe: Feb-25-2025