1. Erbium-doped fiber
Erbium waa curiye dhul naadir ah oo leh nambar atomic ah 68 iyo miisaanka atamka ee 167.3.Heerka tamarta elektaroonigga ah ee erbium ion ayaa lagu muujiyay jaantuska, iyo ka gudubka heerka tamarta hoose ilaa heerka tamarta sare waxay u dhigantaa habka nuugista iftiinka.Isbeddelka heerka tamarta sare ilaa heerka tamarta hoose wuxuu u dhigmaa habka iftiinka iftiinka.
2. Mabda'a EDFA
EDFA waxay isticmaashaa erbium ion-doped fiber sida dhexdhexaadka faa'iidada, kaas oo soo saara leexinta dadweynaha hoos yimaada iftiinka bamka.Waxay ku ogaanaysaa kor u qaadida shucaaca la kiciyey iyada oo la hoos gelayo iftiiminta iftiinka.
Erbium ions waxay leeyihiin saddex heer oo tamar ah.Waxay joogaan heerka tamarta ugu hooseeya, E1, marka aysan ku faraxsanayn wax iftiin ah.Marka fiberku si joogto ah ugu faraxsan yahay bamka iftiinka isha laser, qaybaha dhulka ee dhulka ayaa helaya tamar waxayna u gudbaan heer tamar sare.Sida isbeddelka E1 ilaa E3, sababtoo ah qaybtu waa mid aan degganayn heerka tamarta sare ee E3, waxay si dhakhso ah ugu dhici doontaa gobolka metastable E2 ee habka kala-guurka ee aan shucaaca ahayn.Heerka tamartaan, qaybuhu waxay leeyihiin nolol badbaado oo aad u dheer.Sababtoo ah kicinta joogtada ah ee isha iftiinka bamka, tirada qaybaha heerka tamarta E2 waxay sii wadi doontaa inay kordhiso, tirada qaybaha heerka tamarta E1 ayaa kordhin doonta.Sidan, qaybinta rogashada dadweynaha waxaa lagu xaqiiqsaday fiber-ka erbium-doped, iyo shuruudaha barashada maqal-weyneyntu waa la heli karaa.
Marka signalka tamarta sawirka E = hf uu si sax ah u siman yahay farqiga heerka tamarta ee u dhexeeya E2 iyo E1, E2-E1=hf, qaybaha ku jira xaalad metastable waxay u gudbi doonaan heerka dhulka E1 qaab shucaac la kiciyay.Shucaaca iyo gelinta Sawirada ku jira calaamaduhu waxay la mid yihiin photon-yada, sidaas awgeed waxay si aad ah u kordhiyaan tirada photons-ka, taasoo ka dhigaysa gelinta signalka indhaha inuu noqdo calaamad xoog leh oo soo saarta fiilada erbium-doped, taasoo ogaanaysa kordhinta tooska ah ee ishaarka indhaha. .
2. jaantuska nidaamka iyo hordhaca qalabka aasaasiga ah
2.1.Jaantuska jaantuska ee nidaamka cod-weyneeye fiber indhaha ee L-band waa sida soo socota:
2.2.Jaantuska jaantuska ee nidaamka isha iftiinka ASE ee sii daynta kediska ah ee erbium-doped fiber waa sida soo socota:
Hordhaca aaladda
1.ROF -EDFA -HP Awoodda Sare ee Erbium Doped Fiber Amplifier
| Halbeegga | Unug | Min | Nooca | Max | |
| Qiyaasta hirarka dhererka ee shaqaynaysa | nm | 1525 | 1565 | ||
| Kala duwanaanshaha awoodda signalka galitaanka | dBm | -5 | 10 | ||
| Korantada soo saarista awoodda indhaha | dBm | 37 | |||
| Soo saarista saturation xasiloonida awooda indhaha | dB | ±0.3 | |||
| Tusmada qaylada @ gelinta 0dBm | dB | 5.5 | 6.0 | ||
| Gelida go'doominta indhaha | dB | 30 | |||
| Soo saarida go'doominta indhaha | dB | 30 | |||
| Luminta soo celinta soo celinta | dB | 40 | |||
| khasaaraha soo laabashada | dB | 40 | |||
| Faa'iidada ku tiirsanaanta polarization | dB | 0.3 | 0.5 | ||
| Qaabka kala firdhisanaanta | ps | 0.3 | |||
| Diidashada bamka wax gelinta | dBm | -30 | |||
| Diidashada bamka soo baxa | dBm | -30 | |||
| Korantada shaqaynaysa | V ( AC ) | 80 | 240 | ||
| Nooca Fiber | SMF-28 | ||||
| Interface wax soo saarka | FC/APC | ||||
| Isku xirka isgaarsiinta | RS232 | ||||
| Cabbirka xirmada | Module | mm | 483×385×88(2U rack) | ||
| Desktop | mm | 150×125×35 | |||
2.ROF -EDFA -B erbium-doped-fiber power amplifier
| Halbeegga | Unug | Min | Nooca | Max | ||
| Qiyaasta hirarka dhererka ee shaqaynaysa | nm | 1525 | 1565 | |||
| Kala duwanaanshaha awoodda signalka soo-saarka | dBm | -10 | ||||
| Helitaanka calaamad yar | dB | 30 | 35 | |||
| Kala duwanaanshaha wax soo saarka indhaha ee saturation * | dBm | 17/20/23 | ||||
| Sawirka qaylada ** | dB | 5.0 | 5.5 | |||
| Go'doominta galitaanka | dB | 30 | ||||
| Go'doominta wax soo saarka | dB | 30 | ||||
| Faa'iidada madax-bannaanida ee Polarization | dB | 0.3 | 0.5 | |||
| Qaabka kala firdhisanaanta | ps | 0.3 | ||||
| Diidashada bamka wax gelinta | dBm | -30 | ||||
| Diidashada bamka soo baxa | dBm | -40 | ||||
| Korantada shaqaynaysa | module | V | 4.75 | 5 | 5.25 | |
| desktop | V ( AC ) | 80 | 240 | |||
| Fiber indhaha | SMF-28 | |||||
| Interface wax soo saarka | FC/APC | |||||
| Cabirka | module | mm | 90×70×18 | |||
| desktop | mm | 320×220×90 | ||||
3. ROF -EDFA -P model Erbium doped amplifier fiber
| Halbeegga | Unug | Min | Nooca | Max | |
| Qiyaasta hirarka dhererka ee shaqaynaysa | nm | 1525 | 1565 | ||
| Kala duwanaanshaha awoodda signalka galitaanka | dBm | -45 | |||
| Helitaanka calaamad yar | dB | 30 | 35 | ||
| Kala duwanaanshaha soosaarka tamarta indhaha ee saturation * | dBm | 0 | |||
| Tusmada qaylada ** | dB | 5.0 | 5.5 | ||
| Gelida go'doominta indhaha | dB | 30 | |||
| Soo saarida go'doominta indhaha | dB | 30 | |||
| Faa'iidada ku tiirsanaanta polarization | dB | 0.3 | 0.5 | ||
| Qaabka kala firdhisanaanta | ps | 0.3 | |||
| Diidashada bamka wax gelinta | dBm | -30 | |||
| Diidashada bamka soo baxa | dBm | -40 | |||
| Ku shaqaynta Voltage | Module | V | 4.75 | 5 | 5.25 |
| Desktop | V ( AC ) | 80 | 240 | ||
| Nooca Fiber | SMF-28 | ||||
| Interface Output | FC/APC | ||||
| Cabbirka xirmada | Module | mm | 90*70*18 | ||
| Desktop | mm | 320*220*90 | |||