Ingaba kwenzeka njanisemiconductor optical amplifierukuphumeza ulwandiso?
Emva kokufika kwexesha lonxibelelwano olukhulu lwefiber optical, itekhnoloji ye-optical amplification iphuhliswe ngokukhawuleza.Iiamplifiers zamehloukwandisa imiqondiso ye-optical input esekelwe kwi-radiation evuselelweyo okanye ukusabalalisa okukhuthazwayo. Ngokomgaqo osebenzayo, i-amplifiers optical inokwahlulwa ibe yi-semiconductor optical amplifiers (SOA) kunyei-fiber optical amplifiers. Phakathi kwabo,i-semiconductor optical amplifierszisetyenziswa ngokubanzi kunxibelelwano lwamehlo ngenxa yeenzuzo zebhendi yenzuzo ebanzi, indibaniselwano elungileyo kunye noluhlu olubanzi lwamaza. Ziqulunqwe yimimandla esebenzayo kunye ne-passive, kwaye ummandla osebenzayo ngummandla wokufumana. Xa umqondiso wokukhanya udlula kummandla osebenzayo, ubangela ukuba ii-electron zilahlekelwe amandla kwaye zibuyele kwindawo esemhlabeni ngendlela yeefotoni, ezinobude obufanayo nomqondiso wokukhanya, ngaloo ndlela ikhulisa umqondiso wokukhanya. I-semiconductor optical amplifier iguqula i-semiconductor carrier kwi-particle reverse ngokuqhuba ngoku, ikhulise i-amplitude yokukhanya kwembewu efakwe injected, kwaye igcina iimpawu ezisisiseko zokukhanya kwembewu ejojowe njenge-polarization, ububanzi bomgca kunye nokuphindaphinda. Ngokunyuka kokusebenza kwangoku, amandla optical ophumayo nawo ayanda kubudlelwane obuthile obusebenzayo.
Kodwa oku kukhula akukho ngaphandle kwemida, kuba i-semiconductor optical amplifiers inenzuzo yokufumana saturation. I-phenomenon ibonisa ukuba xa igalelo lamandla optical lihlala lihlala, inzuzo iyanda ngokunyuka kwe-concentration ye-injected carrier concentration, kodwa xa i-injected carrier concentration ikhulu kakhulu, inzuzo iya kuhlutha okanye iyancipha. Xa ugxininiso lwe-carrier carrier luhlala luhlala, amandla okuphuma ayanda ngokunyuka kwamandla okufakelwa, kodwa xa igalelo lamandla optical lilikhulu kakhulu, izinga lokusetyenziswa kwe-carrier carrier elibangelwa yi-radiation eyonwabileyo inkulu kakhulu, ekhokelela ekufumaneni ukuxhamla okanye ukuhla. Isizathu sokufumana i-saturation phenomenon yintsebenziswano phakathi kwee-electron kunye neefotoni kwindawo esebenzayo. Nokuba iifotoni ziveliswe kwi-get medium okanye kwiifotoni zangaphandle, isantya apho i-radiation evuselelweyo itya abathwali inxulumene nesantya apho abathwali baphinda bazalise kwinqanaba lamandla elihambelanayo ngexesha. Ukongeza kwi-radiation evuselelweyo, ireyithi yokuthwala esetyenziswa zezinye izinto nayo iyatshintsha, echaphazela kakubi ukufumana saturation.
Ekubeni umsebenzi obaluleke kakhulu we-semiconductor optical amplifiers yi-linear amplification, ngokuyinhloko ukuphumeza ukukhulisa, ingasetyenziselwa njengama-amplifiers amandla, i-amplifiers ye-line kunye ne-preamplifiers kwiinkqubo zonxibelelwano. Kwisiphelo sothumelo, i-semiconductor optical amplifier isetyenziswa njenge-amplifier yamandla ukukhulisa amandla okuphuma ekupheleni kwenkqubo, enokunyusa kakhulu umgama we-relay we-trunk yenkqubo. Kumgca wothumelo, i-semiconductor optical amplifier ingasetyenziswa njenge-linear relay amplifier, ukwenzela ukuba umgama wokubuyisela ukubuyisela ukuhanjiswa unokwandiswa kwakhona ngokuxhuma kunye nemida. Ekupheleni kokufumana, i-semiconductor optical amplifier ingasetyenziselwa njenge-preamplifier, enokuphucula kakhulu uvakalelo lommkeli. Iimpawu ze-saturation ze-semiconductor optical amplifiers ziya kubangela ukuba inzuzo ngebit nganye idibane nolandelelwano lwangaphambili lwe-bit. Umphumo wepateni phakathi kwamajelo amancinci nawo angabizwa ngokuba yi-cross-gain modulation effect. Obu buchule busebenzisa umndilili wezibalo zesiphumo sokuguquguquka kwenzuzo phakathi kwamajelo amaninzi kwaye sazisa ukuqina okuphakathi kwamaza aqhubekayo kwinkqubo yokugcina umqadi, ngaloo ndlela kucinezela inzuzo iyonke yeamplifier. Emva koko i-cross-gain modulation effect phakathi kwamajelo iyancipha.
I-semiconductor optical amplifiers inesakhiwo esilula, ukudibanisa lula, kwaye inokwandisa izibonakaliso ze-optical ze-wavelengths ezahlukeneyo, kwaye zisetyenziswa ngokubanzi ekudityanisweni kweentlobo ezahlukeneyo ze-lasers. Okwangoku, itekhnoloji yokudibanisa i-laser esekwe kwi-semiconductor optical amplifiers iyaqhubeka nokuvuthwa, kodwa iinzame kusafuneka zenziwe kule miba mithathu ilandelayo. Enye kukunciphisa ilahleko yokudibanisa kunye nefiber optical. Ingxaki ephambili ye-semiconductor optical amplifier kukuba ilahleko yokudibanisa kunye nefiber inkulu. Ukuze kuphuculwe ukusebenza kakuhle kokudibanisa, i-lens inokongezwa kwinkqubo yokudibanisa ukunciphisa ilahleko yokubonakalisa, ukuphucula i-symmetry ye-beam, kunye nokufezekisa ukudibanisa okuphezulu. Okwesibini kukunciphisa i-polarization sensitivity ye-semiconductor optical amplifiers. Uphawu lwepolarization ikakhulu lubhekisa kubuntununtunu bepolarization yokukhanya kwesiganeko. Ukuba i-semiconductor optical amplifier ayiculwanga ngokukodwa, i-bandwidth esebenzayo yenzuzo iya kuncitshiswa. Isakhiwo somthombo we-Quantum sinokuphucula ngokufanelekileyo ukuzinza kwe-semiconductor optical amplifiers. Kunokwenzeka ukuba ufunde i-quantum elula kunye neyona ndlela iphezulu yesakhiwo sokunciphisa i-polarization sensitivity ye-semiconductor optical amplifiers. Okwesithathu kukulungelelaniswa kwenkqubo edibeneyo. Okwangoku, ukuhlanganiswa kwe-semiconductor optical amplifiers kunye ne-laser kunzima kakhulu kwaye kunzima ekuqhubeni ubugcisa, okubangela ilahleko enkulu ekuhanjisweni kwesignali ye-optical kunye nokulahlekelwa kokufaka isixhobo, kwaye iindleko ziphezulu kakhulu. Ngoko ke, kufuneka sizame ukwandisa isakhiwo sezixhobo ezidibeneyo kunye nokuphucula ukuchaneka kwezixhobo.
Kwitekhnoloji yonxibelelwano lwamehlo, itekhnoloji yokukhulisa itekhnoloji yenye yeetekhnoloji ezixhasayo, kwaye itekhnoloji ye-semiconductor optical amplifier ikhula ngokukhawuleza. Okwangoku, ukusebenza kwe-semiconductor optical amplifiers kuye kwaphuculwa kakhulu, ngakumbi ekuphuhliseni iteknoloji yesizukulwana esitsha esifana ne-wavelength division multiplexing okanye iindlela zokutshintsha optical. Ngophuhliso lweshishini lolwazi, itekhnoloji yokukhulisa i-optical elungele amaqela ahlukeneyo kunye nezicelo ezahlukeneyo ziya kuqaliswa, kwaye uphuhliso kunye nophando lwetekhnoloji entsha ngokuqinisekileyo luya kwenza itekhnoloji ye-semiconductor optical amplifier iqhubeke nokuphuhlisa kwaye iphumelele.
Ixesha lokuposa: Feb-25-2025