1. Ukuhlukaniswa kweFiberAama-meplifiers
Kunezinhlobo ezintathu eziphambili ze-Optical Amplifiers:
(1) I-semiconductor aplifier (SOA, i-semiconductor appifier);
(2) I-Optical fiber Amplifiers idonswe ngezinto zomhlaba ezingandileI-Edfa), kanye ne-tulium-doped fiber amplifiers (TDFA) kanye ne-praceodymium-doped fiber amplifiers (PDFA), njll.
. Ukuqhathaniswa kokusebenza okuyinhloko kwalezi zimpungushe ze-optical amplifiers kukhonjisiwe etafuleni
U-Edfa (I-Erbium Droped Fiber Amplifier)
Uhlelo lwe-Laser olungaphakathi lwe-LEVER lungakhiwa ngokudonsa i-quartz fiber ngezinto zomhlaba ezingandile (njenge-ND, i-ER, i-PR, i-TM, njl.), Kanye nokukhanya kwesiginali okufakwayo kukhuliswe ngokuqondile ngaphansi kwesenzo sokukhanya kwepompo. Ngemuva kokuhlinzeka ngempendulo efanelekile, kwakhiwa i-laser ye-fiber. I-wavelfth esebenzayo ye-amplifier ye-ND-doped fiber amplifier yi-1060nm ne-1330NM, futhi ukuthuthukiswa kwayo kanye nesicelo kukhawulelwe ngenxa yokuphambuka ethekwini elihle kakhulu le-fiber optic zokuxhumana nezinye izizathu. Ama-wavelength asebenzayo e-EDFA ne-PDFA ngokulandelana kwefasitela eliphansi kakhulu (1550nm) kanye ne-zero dispion wavength Ikakhulu i-EDFA, ukuthuthuka okusheshayo kakhulu, bekusebenzayo.
Le khasiPRinckad of Edfa
Isakhiwo esiyisisekelo se-EDFA sikhonjiswa kuMdwebo 1 (a), okuhlanganiswa ikakhulu nge-Medium Medium (i-Adbium-doped silica fiber mayelana namamitha angama-3-5 (990 noma i-Isolator ye-Coupler ne-Optical Ukukhanya okukhanyayo nokukhanya kwepompo kungasakazeka endaweni efanayo (ukupompa ye-codirectional), izinkomba eziphikisanayo (ukubuyisela emuva emuva) noma zombili izinkomba (ukupompaniswa kwe-bidirectional) ku-fiber ye-erbium. Lapho ukukhanya kwesiginali kanye nokukhanya kwepompo kufakwa ku-fiber ye-erbium ngasikhathi sinye, ama-erbium ion ajabule ngezinga lamandla aphansi, lapho libuyela esimweni esilinganiselwe esisezingeni lesigameko, ukuze isibonakaliso sitholakale. Umdwebo ongu-1 (c) ukukhishwa kwayo okuzenzakalelayo okuzenzakalelayo (ASE) I-Spectrum ene-bandwidth enkulu (kuze kube ngu-20- 40mm) neziqongo ezimbili ezihambelana ne-1530nm ngokulandelana.
Izinzuzo eziphambili ze-EDFA ziyinzuzo ephezulu, i-bandwidth enkulu, amandla aphezulu okukhipha, ukusebenza kahle kwepompo ephezulu, ukulahleka kokufaka okuphansi, nokungaphakathi esimweni sombala.
2. Izinkinga nge-fiber optical amplifiers
Yize i-amplifier ye-optical amplifier (ikakhulukazi i-EDFA) inezinzuzo eziningi ezivelele, akusona isikhuli se-amplifier esihle. Ngaphezu komsindo owengeziwe onciphisa i-SNR yesiginali, kukhona okunye ukushiyeka, okufana:
- Ukungalingani kwe-Get Spectrum ngaphakathi kwe-amplifier bandwidth kuthinta ukusebenza kwe-Emploification Enlues-Channel;
- Lapho ama-amplifiers ama-optical amplifiers enziwe, imiphumela ye-ASEouse, ukuhlakazwa kwe-fiber kanye nemiphumela engemihle kuzoqongelela.
Lezi zingqinamba kufanele zibhekwe ku-application and system design.
3. Ukusetshenziswa kwe-amplifier ye-Optical Amplifier ku-Optical Fibriection System
Ohlelweni lokuxhumana lwe-Optical fiber, TheI-Fibre Optical AmplifierIngasetshenziswa hhayi kuphela njenge-amplifier yokukhulisa amandla ye-transmitter yokwandisa amandla okuhambisa, kepha futhi njenge-preamlifier yomukeli yokuthola ukuzwela, futhi ingabeka esikhundleni sokuphindisela okubonakalayo-ugesi-ugesi, ukwelula ibanga lokuhambisa bese ubona konke-ukuxhumana kwe-optical.
Kuzinhlelo zokuxhumana ze-fiber ze-Optical fiber, izici eziphambili ezinciphisa ibanga lokuhambisa ukulahleka nokuhlakazeka kwefayibha ye-optical. Usebenzisa umthombo omncane wokukhanya okukhanyayo, noma usebenza eduze kwe-zero-dispitor wavength, ithonya lokuhlakazeka kwe-fiber lincane. Lolu hlelo aludingi ukwenza kabusha okuphelele kwesiginali sokuvuselelwa kwesikhathi (3r edluliselwe) esiteshini ngasinye sokudlulisa. Kwanele ukukhulisa ngokuqondile isiginali ye-Optical nge-amplifier ye-Optical Amplifier (1r edluliselwe). Ama-amplifiers we-Optical Amplifiers angasetshenziswa hhayi ezinhlelweni zebanga lebanga elide kodwa futhi nasemanethiwekhi okusatshalaliswa kwe-fiber optical, ikakhulukazi ezinhlelweni ze-WDM, ukuthuthukisa iziteshi eziningi ngasikhathi sinye.
1) Ukusetshenziswa kwama-amplifiers we-Optical Amplifiers ku-Trunk Optical Fiblical Systems
I-Fig. 2 ngumdwebo we-schematic wokusetshenziswa kwe-amplifier ye-Optical Amplifier kuhlelo lokuxhumana lwe-Trunk Optical Fiber Optical. . Isibonelo, ukwamukela i-EDFA, ukuhanjiswa kwesistimu Ibanga lokukhuphuka kwe-1.8GB / S landa kusuka ku-120km kuya ku-250km noma ifinyelele ku-400km. Umdwebo 2 (B) - (D) ukusetshenziswa kwama-amplifier aptical in Systems Multi-Planday; Umdwebo (b) uyimodi edluliselwe yendabuko ye-3R; Umdwebo (C) iyindlela edluliselwe edluliselwe yabaphindaphindwayo abangama-3R nama-amplifiers abonakalayo; Umdwebo 2 (D) Yimodi edluliselwe konke-optical; Kuhlelo lokuxhumana lwe-Optical Optical, alufaki amaseliphu esikhathi kanye nama-regeneration, ngakho-ke acace bha, futhi akukho "i-whisker yobhodlela kagesi". Uma nje imishini yokuthumela neyokwamukelayo kuyo yomibili imiphetho ithathelwa indawo, kulula ukuthuthukisa kusuka kunani eliphansi kuya kwesilinganiso esiphakeme, kanti isikhulisi se-optical amplifier asidingi ukushintshwa.
2) Ukusetshenziswa kwe-amplifier ye-Optical Amplifier ku-Optical Fib fiber Distribution Network
Izinzuzo eziphezulu zokukhipha amandla ze-Optical Amplifiers (ikakhulukazi i-EDFA) ziwusizo kakhulu kumanethiwekhi okusatshalaliswa kwe-Broadband (njengeIkatiAmanethiwekhi). Inethiwekhi ye-Catv yendabuko yamukela ikhebula le-coaxial, elidinga ukunyuswa njalo ngamamitha angamakhulu ambalwa, futhi imisebe yenkonzo yenethiwekhi cishe i-7km. Inethiwekhi ye-Optical Fibre Catv esebenzisa ama-amplifiers we-Optical Amplifiers ayikwazi ukukhulisa kakhulu inani labasebenzisi abasatshalaliswa, kodwa futhi banwebisa kakhulu indlela yenethiwekhi. Ukuthuthukiswa kwakamuva kukhombisile ukuthi ukuhanjiswa kwe-fiber / i-hybrid (HFC) kudonsela amandla okubili futhi kunompetha okuqinile.
Umdwebo 4 uyisibonelo senethiwekhi ye-Fiber Distribution Network yokushintshwa kwe-AM-VSB yeziteshi ezingama-35 ze-TV. Umthombo wokukhanya we-transmitter uyi-DFB-LD nge-wavelength ka-1550nm namandla okukhipha i-3.3DBM. Usebenzisa i-EDFA engu-4-Level edfa njenge-amplifier yokusabalalisa kwamandla, amandla ayo okufaka aphathelene -6dbm, futhi amandla awo okukhipha acishe abe yi-13DBM. I-Optical Receiver Setitivity -9.2D BM. Ngemuva kwamazinga ama-4 okusatshalaliswa, inani eliphelele labasebenzisi selifinyelele ezigidini ezingama-4.2, futhi indlela yenethiwekhi ingaphezu kwamashumi amakhilomitha. Isilinganiso sesigcawu se-Signal-to-to-Noise sokuhlolwa sasisikhulu kune-45DB, futhi u-Edfa akazange adale ukuncishiswa kwe-CSO.
Isikhathi sePosi: APR-23-2023