1. Kala soociddaFiberAmplifiers
Waxaa jira seddex nooc oo waaweyn oo waaweyn oo ballaaran oo ballaaran
(1) Semiconductor Comifitier Comimesier (SOA, Semiconductor Comificier);
(2) Aberdicals fiber fiber oo ay ku dheceen cuntooyinka dhulka dhif ah (erbium er, thulium tm, praseymium pr, rusium th, iwm.), Inta badan eberbium-fiyuusiumE Edfa), iyo sidoo kale dhejisyada fiber-ka-fidsanka filimka ee thyfa (TDFA) iyo arimaha miraha fidsan ee prrasymium (pdfa), iwm.
(3) Arbigiyo fiber notlinear ah, badiyaa waxay u badan yihiin finanka ramann-ka ah (Fra, fiber Raman cod-weyne). Isbarbardhiga waxqabadka ugu weyn ee mushaharkaas olical olical ah ayaa lagu muujiyey miiska
EDFA (erbium proped omiirka fiber)
Nidaamka Laser-Heerka Laser-Laser-ka ah waxaa lagu samayn karaa iyada oo lagu dhejiyo fiber-ka ruqruxda ee qaybaha dhulka dhif ah (sida Nd, er, ex, iwm, iyo nalka calaamadda muuqaalka ah ay si toos ah ugu kordhiyeen ficilka nalka bamka. Ka dib markii la siinayo jawaab celin munaasib ah, warqad fiber ah ayaa la sameeyay. Hilibka shaqadu ee shaqada ee fiber-ka fiber-ka ee fiber-ka ah waa 1060nm iyo 1330m, iyo horumarkiisa iyo codsigiisa ayaa xadidan sababtuna tahay ka-leexashada dekada ugu wanaagsan ee isgaarsiinta fiber optic-ga iyo sababaha kale. Mawjadaha hawlgalka ee EDFA iyo PDFA waxay siday u kala horreeyaan daaqadda khasaaraha ugu hooseeya (1500Nm) iyo hidde-ka-firidhsan (1300nm) ee isgaarsiinta fiber-ka indhaha, oo ay ku habboon tahay codsiyada nidaamka isgaarsiinta fiber ee indhaha. Gaar ahaan EDFA, horumarka ugu dhakhsaha badan ee ugu dhakhsaha badan, ayaa wax ku ool ah.
-Ga / -daPRintaan ee Edfa
Qaab-dhismeedka aasaasiga ah ee EDFA waxaa lagu muujiyey Jaantuska 1 (a), oo inta badan ka kooban silsilado dhexdhexaad ah (erbium-fiber ah oo ku saabsan tobanaan mitir, oo leh ilo-dajin ah (990 ama 1480nm), isjilka indhaha ee indhaha. Iftiinka iftiinka iyo nalka bamka ayaa faafin kara isla jihada (bamgareynta codiruction), jihooyinka ka soo horjeedda (jihooyinka dib udhaca ah (matoorka dib-u-eega) ama tilmaanta labadaba (bamgareynta loo yaqaan 'Bidiricect') fiber-ka erbium-ka ah. Marka iftiinka calaamadda iyo nalka matoorka lagu mudo fiber-ka erbium-ka isla waqtigaas, ions 1 (b), oo ay si dhakhso leh u xumaato nalka iftiinka shilalka, si seenyaalaha la kordhiyo. Jaantus 1 (c) waa qulqulka (ase) spectrum oo leh xayndaab ballaaran (illaa 20-40nm) iyo laba ugu sarreeya oo u dhigma 1530Nm iyo 1550m siday u kala horreeyaan.
Faa'iidooyinka ugu weyn ee Edfa waa faa'iido sare, xayndaab ballaaran, awood sare oo wax soo saarka sare ah, hufnaan sare, luminta gelitaanka hoose, iyo injiilka iyo injiilation-ka ee gobolka xurmada.
2. Dhibaatooyinka leh optic optical optic optics
In kasta oo codka ugu wanaagsan ee comir (gaar ahaan EDFA) ay leedahay faa iidooyin badan oo aad u fiican, ma ahan comir badan. Ka sokow buuqa dheeraadka ah ee yareynaya SNR ee SNR ee SNR, waxaa jira wax qabadyo kale oo kale, sida:
- Univernesness of the Chitch Spectrum gudaheeda ee faashadda cod-weynedu waxay saameyn ku leedahay waxqabadka cod-bixinta ee badan;
- Marka cod-weynaha optical-ka la xareeyay, saamaynta dhagaxa ASE, kala firidhsan fiber iyo waxyeelada aan tooska ahayn ayaa isku urursan doona.
Arimahan waa in lagu qaddariyo codsiyada iyo qaabeynta nidaamka.
3. Codsiga cod-bixinta optical ee nidaamka isgaarsiinta fiber ee indhaha
Nidaamka isgaarsiinta fiber ee indhaha,Fibriiska Optical OpticalWaxaa loo istcimaali karaa oo keliya ma ahan awood kor u qaadida cod-weynaha ee gudbinta si loo kordhiyo awoodda gudbinta, laakiin sidoo kale waxay u egtahay preamplififier-ka si loo wanaajiyo sumcadda indhaha ee indhaha ee indhaha, si loo kordhiyo masaafada faafinta oo ay gartaan isgaarsiinta indhaha.
Nidaamyada isgaarsiinta fiber-ka indhaha, qodobbada ugu weyn ee xaddidaya masaafada gudbinta waa khasaaraha iyo isbarbardhiga iyo kala-duwanaanshaha fiber-ka indhaha. Isticmaalidda ilaha iftiinka-muuqaalka cidhiidhiga ah, ama ka shaqeynta meel u dhow hidda-lugta eber-yeynta, saameynta fiber fiber waa yar tahay. Nidaamkani uma baahna inuu sameeyo dib-u-cusboonaysiinta waqtiga oo dhameystiran (3R Relay) xarun kasta oo dib-u-dhigis ah. Waa ku filan tahay in si toos ah loogu sii xoojiyo seenyaalaha indhaha ah oo leh optical comical optical (1r Relay). Aruuriyaha indhaha waxaa loo isticmaali karaa oo keliya nidaamyada jirridda masaafada dheer laakiin sidoo kale shabakadaha qaybinta fiberka fiber-ka indhaha, gaar ahaan nidaamyada WDM, si ay isku mar ugu sii wadaan.
1) Codsiga cod-bixinta optical ee nidaamyada isgaarsiinta fiber ee indhaha ku habboon
Jaantus 2 waa jaantusyo qorsheysan oo ah adeegsiga cod-bixinta optical optical ee nidaamka isgaadhsiinta fiber ee opt opicat opict. (a) Sawirku wuxuu muujinayaa in optical comir-midda loo isticmaalo sida awoodda kor u qaadida cod-weynaha ee gudbinta iyo preamplififier ee heyst si aan masaafada ahayn ee aan labanlaaban. Tusaale ahaan, qaadashada Edfa, nidaamka gudbinta Fogaanta 1.8GB / S Kordhinta 120km ilaa 250km ama xitaa wuxuu gaaraa 400km. Jaantus 2 (b) - (d) Waa adeegsiga cod-bixinta optical ee nidaamyada dib-u-dejinta ee nidaamyada dib-u-dejinta; Jaantus (b) waa qaab-dhaqameedka caadiga ah ee Relay; Jaantus (c) waa habka loo qasay habka dib-u-dejinta isku-dhafka ah ee ku soo celiya 3R oo ku soo celinaya dadka iyo cod-bixinta indhaha ee indhaha; Jaantus 2 (d) Waa qaab dib-u-dhac ku habboon oo dhan; Nidaamka isgaarsiinta ee indhaha, kuma jiraan wareegga waqtiga iyo dib-u-cusboonaysiinta, sidaa darteed waa waxoogaa hufan, mana jiraan "xayiraad dhalo elektiroonig ah" dhalo elektiroonig ah ". Ilaa iyo inta la dirayo iyo helitaanka aaladda labada dhinacba la beddelo, way fududahay in kor loo qaado heerka hoose ee heer sare ah, iyo cod-weyne-optical-ka uma baahna in la beddelo.
2) Codsiga cod-bixinta optical opherka ee shabakadda qaybinta fiber ee fiber
Faa'iidooyinka korantada sare ee musiibaadayaasha indhaha (gaar ahaan EDFA) waa kuwo aad waxtar u leh shabakadaha ballaaran ee qaybinta (sidaCatvShabakadaha). Shabakada caadiga ah ee catv waxay qaadataa fiilo coaxial ah, kaas oo u baahan in la amro dhowr boqol oo mitir, oo rajeeyada adeegga ee shabakadda waa 7km. Shabakadda 'fiber-ka' fiber-ka 'fiber catv' iyadoo la adeegsanayo optical oplical-ka kaliya si weyn uma kordhin karaan tirada isticmaaleyaasha loo qaybiyo, laakiin sidoo kale si weyn ayey u ballaadhiyaan wadada shabakadda. Horumarrada ugu dambeysa ayaa muujisay in qaybinta fiber-ka optical / hybrid (HFC) ay soo jiidato awoodaha labadaba oo ay leedahay tartan adag.
Jaantus 4 waa tusaale ah shabakad qaybinta fiber ee fiber ee finalka ee loo yaqaan 'AM-VSB' oo ah 35 kanaalada TV-ga. Iftiinka iftiinka ee gudbiyaha waa DFB-LD oo leh mawjad dhan 1550Nm iyo koronta wax soo saarka ee 3.3dbb. U adeegsiga 4-heer EDFA sidii appurier korantada oo ah appormier awood-qaybinta, awooddeeda gelinta waa qiyaastii -6DBM, iyo awoodda wax soo saarka waa 13dbm. Dareenka optical heyst -9.2d bm. 4 heerar oo qaybinta ah, wadarta tirada guud ee isticmaaleyaashu waxay gaareen 4.2 milyan, oo wadiiqoolada shabakadda ayaa ka badan tobanaan kiiloomitir. Saamiga isugeynta miisaanka ee miisaanka ee imtixaanka ayaa ka badnaa 45DB, iyo Edfa ma aysan keenin hoos u dhac ku yimid CSO.
Waqtiga Post: apr-23-2023