Cov yam ntxwv ntawm EDFA Amplifier

Cov yam ntxwv ntawmEDFA Amplifier
Lub hauv paus ntsiab lus ua haujlwm ntawm cov fiber amplifiers zoo ib yam li cov lasers solid-state. Cov theem zog tseem ceeb, kev nqus thiab qhov nce spectra ntawm erbium ions (Er ³ ⁺) hauv quartz optical fibers tau qhia hauv Daim Duab 2. Cov khoom amorphous ntawm quartz ua rau cov theem zog ntawm erbium ions dav dua rau hauv cov kab, thiab ntau qhov kev hloov pauv tuaj yeem siv los twj erbium ions, nrog rau cov twj tso kua mis zoo tshaj plaws yog 980 nm thiab 1480 nm.
Qhov wavelength ua haujlwm ntawm EDFA Amplifier poob meej meej hauv qhov zoo tshaj plaws wavelength ntau ntawm 1330-1600nm rau kev sib txuas lus fiber optic. EDFA Amplifier ua haujlwm hauv C-band (1530-1565nm) nrog lub qhov rais poob qis tshaj plaws tau siv dav. Txhawm rau kom siv tag nrho cov peev txheej bandwidth ntawm cov fibers optical, tib neeg kuj tau cog lus los tsim EDFAs hauv L-band (1570-1610nm). L-band nyob ntawm tus Tsov tus tw ntawm EDFA qhov nce spectrum, yog li L-band EDFAs yuav tsum siv cov fibers ntev dua thiab lub zog twj tso kua mis siab dua, lossis siv cov fibers doped heev.
EDFA Optical Amplifiermuaj qhov nce siab (ntau dua 30-50dB) thiab muab qhov nce tiaj tiaj hla lub zaus dav (txog li 30nm), ua rau nws tsim nyog rau kev ua kom cov teeb liab hauv ntau lub channel optical, tshwj xeeb tshaj yog hauv cov kab ke sib cais wavelength (DWDM). Suab qis (4-8dB), mus txog qhov txwv quantum. Thaum siv rau WDM systems, qhov crosstalk ntawm cov channel raug txo qis thiab ntau lub amplifiers tuaj yeem cascaded. Muaj lub zog tso zis siab (10-20 dBm), nws tuaj yeem siv ua lub zog amplifier tom qab lub transmitter kom nce qhov deb kis lossis faib tus lej ntawm cov nodes optical tsis muaj kab relay. Lub zog twj tso kua mis xav tau yog qis (kaum tawm milliwatts). Qhov nce yog ywj pheej ntawm lub xeev polarization ntawm cov fiber, yog li nws muaj kev ruaj khov zoo. Yooj yim rau kev sib txuas nrog cov fibers kis tau, nrog kev poob qis (<1dB). Tsuas yog lub twj tso kua mis, EDFALub Tshuab Nqus Teeb Pom Kev Zooyog tsim los ntawm cov khoom siv tsis siv neeg. Yog li ntawd, piv nrog cov relays hluav taws xob uas nyuaj thiab kim, tus nqi ntawm lub kaw lus raug txo qis thiab kev ntseeg tau zoo dua.
Tsis tas li ntawd, cov yam ntxwv ntawm kev ua kom lub suab nrov ntawmEDFALub amplifier tsis ywj pheej ntawm qhov system bit rate thiab hom ntawv cov ntaub ntawv, yog li nws tuaj yeem ua kom nrov thiab xa cov ntaub ntawv digital thiab analog. Qhov tsis zoo ntawm erbium doped fiber amplifier yog: loj; Lub neej ntawm lub twj tso kua mis tsis ntev; Nws tsis tuaj yeem koom ua ke nrog lwm cov khoom siv, uas txwv tsis pub siverbium doped fiber amplifierhauv kev koom ua ke optoelectronic (OEIC). Tsis tas li ntawd, qhov nce bandwidth ntawm EDFA Amplifier tsuas yog npog ib feem ntawm lub qhov rais poob qis ntawm quartz ib hom fiber, uas txwv tus lej ntawm cov channel wavelength uas cov fiber tuaj yeem ua raws li, uas kuj yog nws qhov tsis zoo.