Umgaqo kunye nokusetyenziswa kweI-EDFA erbium-doped fiber amplifier
Ulwakhiwo olusisiseko lweEDFAI-erbium-doped fiber amplifier, equlunqwe ikakhulu sisiphakathi esisebenzayo (ishumi leemitha ubude be-quartz fiber, i-core diameter 3-5 microns, i-doping concentration (25-1000) x10-6), umthombo wokukhanya wempompo (990 okanye 1480nm LD), i-optical coupler kunye ne-optical isolator. Ukukhanya kwesignali kunye nokukhanya kwepompo kunokusasaza kwicala elifanayo (i-co-pumping), i-direct direction echaseneyo (i-reverse pumping), okanye zombini izikhokelo (i-bidirectional pumping) kwi-fiber ye-Erbium. Xa ukukhanya komqondiso kunye nokukhanya kwepompo kufakwe kwi-fiber ye-erbium ngexesha elifanayo, i-ion ye-erbium iyavuya kwinqanaba eliphezulu lamandla (inkqubo yamanqanaba amathathu) phantsi kwesenzo sokukhanya kwepompo, kwaye ngokukhawuleza ibolile kwinqanaba le-metastable. Xa ibuyela kwimeko yomhlaba phantsi kwesenzo sokukhanya kwesiganeko sesiganeko, i-photon ehambelana nokukhanya kwesignali ikhutshwe, ukwenzela ukuba umqondiso ukhuliswe. I-spectrum yayo ye-amplified spontaneous emission (ASE) ine-bandwidth enkulu (ukuya kwi-20-40nm) kwaye ineencopho ezimbini ezihambelana ne-1530nm kunye ne-1550nm ngokulandelanayo.
Iinzuzo eziphambili zeIamplifier ye-EDFAinzuzo ephezulu, i-bandwidth enkulu, amandla aphezulu aphumayo, ukusebenza kakuhle kokumpompa, ilahleko ephantsi yokufaka, kunye nokungabi novelwano kumazwe e-polarization.
Umgaqo osebenzayo we-erbium-doped fiber amplifier
I-Erbium-doped fiber amplifier.I-EDFA Optical Amplifier） ikakhulu yenziwe yi-erbium-doped fiber (malunga ne-10-30m ubude) kunye nomthombo wokukhanya wempompo. Umgaqo osebenzayo kukuba i-erbium-doped fiber ivelisa i-radiation evuselelweyo phantsi kwesenzo somthombo wokukhanya opompelweyo (ubude be-wavelength 980nm okanye i-1480nm), kunye nokutshintsha kokukhanya kwe-radiated kunye nokutshintsha kwesignali yokukhanya kwegalelo, elilingana nokukhulisa umqondiso wokukhanya. Iziphumo zibonisa ukuba inzuzo ye-Erbium-doped fiber amplifier idla ngokuba yi-15-40db, kwaye umgama we-relay unganyuswa ngaphezu kwe-100km. Ke, abantu abanakuzibamba babuze: kwakutheni ukuze izazinzulu zicinge ngokusebenzisa i-doped erbium kwi-fiber amplifier ukunyusa amaza okukhanya? Siyazi ukuba i-erbium yinto enqabileyo yomhlaba, kwaye izakhi zomhlaba ezinqabileyo zineempawu zazo ezikhethekileyo. I-Doping yezinto ezinqabileyo zomhlaba kwizixhobo ze-optical zisetyenziswe ixesha elide ukuphucula ukusebenza kwezixhobo ze-optical, ngoko oku akuyona into eyenzeka ngengozi. Ukongeza, kutheni ubude bomthombo wokukhanya wempompo bukhethwe kwi-980nm okanye i-1480nm? Ngapha koko, ubude bomthombo wokukhanya wempompo bunokuba yi-520nm, 650nm, 980nm, kunye ne-1480nm, kodwa ukuziqhelanisa kubonisile ukuba ubude be-1480nm impompo yomthombo wokukhanya we-laser yeyona iphezulu, ilandelwa bubude bomthombo wokukhanya we-980nm.
Ulwakhiwo lomzimba
Ubume obusisiseko be-erbium-doped fiber amplifier (EDFA Optical Amplifier). Kukho i-isolator ekupheleni kwegalelo kunye nokuphela kwemveliso, injongo kukwenza isignali ye-optical yokudluliselwa kwendlela enye. I-exciter yepompo inobude be-980nm okanye i-1480nm kwaye isetyenziselwa ukunika amandla. Umsebenzi we-coupler kukudibanisa umqondiso we-optical input kunye nokukhanya kwempompo kwifayibha ye-erbium-doped, kunye nokudlulisa amandla okukhanya kwempompo kwi-input optical signal ngesenzo se-erbium-doped fiber, ukuze kuqondwe ukunyuswa kwamandla kwe-input optical signal. Ukuze ufumane imveliso ephezulu ye-optical power kunye ne-index yengxolo esezantsi, i-Erbium-doped fiber amplifier esetyenziswa ekusebenzeni ithatha ubume bemithombo yempompo emibini okanye ngaphezulu kunye ne-isolators embindini ukuhlukanisa enye kwenye. Ukuze ufumane igophe lokuzuza elibanzi nelithambileyo, isihluzo sokufumana isicaba siyadityaniswa.
I-EDFA iqulethe iinqununu ezintlanu eziphambili: i-Erbium-doped fiber (EDF), i-Optical coupler (WDM), i-isolator ye-optical (ISO), i-Optical Filter, kunye ne-Pumping Supply. Imithombo yempompo esetyenziswa ngokuqhelekileyo ibandakanya i-980nm kunye ne-1480nm, kwaye le mithombo mibini yepompo inokusebenza okuphezulu kokupompa kwaye isetyenziswa ngakumbi. I-980nm yempompo yomthombo wengxolo yomthombo wengxolo iphantsi; Umthombo wokukhanya wempompo ye-1480nm unokusebenza okuphezulu kokumpompa kwaye unokufumana amandla amakhulu okuphuma (malunga ne-3dB ephezulu kunomthombo wokukhanya wempompo ye-980nm).
inzuzo
1. I-wavelength yokusebenza ihambelana nobuncinci befestile yokunciphisa i-fiber yemodi enye.
2. Ukusebenza kakuhle kokudibanisa. Kuba isisisandisi sefayibha, kulula ukudibanisa nefayibha yothumelo.
3. Ukusebenza kokuguqulwa kwamandla aphezulu. I-core ye-EDF incinci kune-fiber yokudlulisa, kwaye ukukhanya kwesignali kunye nokukhanya kwepompo kuhanjiswa ngaxeshanye kwi-EDF, ngoko amandla okukhanya agxininiswe kakhulu. Oku kwenza intsebenziswano phakathi kokukhanya kunye ne-ioni yenzuzo ephakathi igcwele kakhulu, idityaniswa nobude obufanelekileyo be-erbium-doped fiber, ngoko ke uguqulo olusebenzayo lwamandla okukhanya luphezulu.
4. Ukuzuza okuphezulu, isalathisi somsindo ophantsi, amandla amakhulu aphumayo, i-crosstalk ephantsi phakathi kwamajelo.
5. Iimpawu zokuzuza okuzinzile: I-EDFA ayinakukhathazeka kwiqondo lokushisa, kwaye inzuzo inobudlelwane obuncinane kunye ne-polarization.
6. Uphawu lokuzuza luzimele kwisantya sesuntswana lenkqubo kunye nefomathi yedatha.
ukusilela
1. Isiphumo esingenasiphelo: I-EDFA ikhulisa amandla okukhanya ngokunyusa amandla optical afakwe kwifiber, kodwa inkulu ngakumbi. Xa amandla okukhanya anyuswe kwinqanaba elithile, umphumo ongeyena we-fiber optical uya kuveliswa. Ngoko ke, xa usebenzisa i-fiber optical amplifiers, ingqwalasela kufuneka ihlawulwe kwixabiso lokulawula i-fiber optical ye-channel eyodwa engenayo.
2. Uluhlu lwe-wavelength yokuzuza lulungisiwe: uluhlu lwe-wavelength esebenzayo ye-C-band EDFA yi-1530nm ~ 1561nm; Uluhlu lwe-wavelength esebenzayo ye-L-band EDFA yi-1565nm ~ 1625nm.
3. Ukungalingani kwe-bandwidth: I-bandwidth yokuzuza ye-EDFA i-erbium-doped fiber amplifier ibanzi kakhulu, kodwa i-spectrum yokuzuza ye-EDF ngokwayo ayisicaba. Isihluzo sokucoca inzuzo kufuneka samkelwe ukuthoba inzuzo kwinkqubo yeWDM.
4. Ingxaki yokunyuka kokukhanya: Xa indlela yokukhanya iyinto eqhelekileyo, i-erbium ions evuyiswa sisibane sempompo ithathwa kukukhanya kwesignali, ngaloo ndlela igqibezela ukukhulisa ukukhanya komqondiso. Ukuba ukukhanya okufakiweyo kuncitshisiwe, ngenxa yokuba ii-ion ze-erbium ze-metastable ziqhubeka ziqokelelana, emva kokuba igalelo lokukhanya komqondiso libuyiselwe, amandla aya kuxhuma, okukhokelela ekukhanyeni ukukhanya.
5. Isisombululo kwi-optical surge kukuqonda ukuncipha kwamandla okusebenza ngokuzenzekelayo (APR) okanye ukucima amandla okusebenza ngokuzenzekelayo (APSD) kwi-EDFA, oko kukuthi, i-EDFA inciphisa ngokuzenzekelayo amandla okanye icime ngokuzenzekelayo umbane xa kungabikho ukukhanya kwegalelo, ngaloo ndlela icinezela ukwenzeka kwesiganeko sokunyuka.
Imo yesicelo
1. I-booster Amplifier isetyenziselwa ukunyusa amandla eempawu ezininzi ze-wavelength emva kwe-booster wave, kwaye emva koko idlulise. Kuba amandla omqondiso emva kokuba i-booster wave inkulu ngokubanzi, isalathiso sengxolo kunye nokuzuza kweamplifier yamandla ayiphezulu kakhulu. Inamandla amakhulu ngokwentelekiso.
2. Iamplifier yomgca, emva kweAmplifier yamandla, isetyenziselwa ukuhlawulela ilahleko yokuhanjiswa kweLine, ngokuqhelekileyo ifuna isalathisi esincinci sesandi kunye nemveliso enkulu yamandla optical.
3. I-Amplifier yangaphambili: Ngaphambi kokuba i-splitter kwaye emva kwe-amplifier yomgca, isetyenziselwa ukukhulisa isignali kunye nokuphucula uvakalelo lomamkeli (kwimeko apho umlinganiselo we-optical signal-to-noise ratio (OSNR) uhlangabezana neemfuno, amandla amakhulu okufakwayo angakwazi ukucinezela ingxolo yomamkeli ngokwawo kwaye aphucule ukuqonda kokufumana), kwaye isalathisi somsindo sincinci kakhulu. Akukho mfuneko inkulu kumandla aphumayo.
Ixesha lokuposa: Mar-17-2025