Advanced Optical Cheebtsam - Raman Fiber Amplifier (RFA)
Feem ntau, txhua yam khoom siv kho qhov muag tau siv hauv kev sib txuas lus kho qhov muag. Feem ntau, Brillouin type amplifier tsis yog siv hauv kev sib txuas lus kho qhov muag. Rau ib qho kev siv, qhov kev txiav txim siab yuav tsum tau ua los ntawm kev siv cov amplifier siv. EDFA amplifier siv nyob rau hauv kab amplifier ntawm tus account ntawm nws cov compatibility. Ntawm qhov tod tes, Raman Fiber Amplifier (RFA) yuav yog lub zog zoo zog rau lub zog vim nws siab txias heev.
EDFAs thiab cov pa roj carbon monoxide, ua tau nce los ntawm kev siv cov khoom ntws mus rau hauv lub xeev siab. Qhov no tso cai rau lub atoms tso lawv lub zog thaum lub photon ntawm ib qho kev tsim wavelength dhau los nyob ze. RFAs siv Stimulated Raman Scattering (SRS) los tsim kho qhov muag. Vim hais tias SRS robs zog los ntawm lub tshav puam luv luv thiab xa nws mus ntev dua qhov ntev, cov channel ntau suav DWDM cov qauv pib cheem tsis tau cov txheej txheem no.
Ib tug RFA amplifier muaj tsawg dua li lub tshuab fais fab loj, feem ntau hu ua Raman laser, thiab WDM lossis kev taw qhia kev coj ua. Tus kho qhov muag tawm tau tshwm sim nyob rau hauv qhov sib txuas tau fiber ntau nws tus kheej, muab faib raws kis kab mob. Nrog kev txhawb zog txog 10 dB, RFAs muab ntau qhov nce bandwidth (mus txog 100 nm), uas cia lawv khiav lag luam siv cov khoom siv foob pob kho qhov muag (ib hom optical fiber ntau, TrueWave, thiab lwm yam). Los ntawm boosting lub teeb liab hauv qhov pib, RFAs txo txoj kev poob phaus thiab ua kom cov suab nrov zoo.
Ua ke nrog EDFAs, RFAs tsim kom muaj ntau qhov kev nce siab-kev kho qhov muag bandwidth. Daim duab belwo qhia tau hais tias lub npe ntawm ib tug raug RFA. Lub twj tso kua mis laser thiab kho qhov muag ntawm lub nruab nrab ntawm ob qho tseem ceeb ntawm RFA amplifier. Nyob rau hauv cov ntaub ntawv no, lub twj tso kua mis laser muaj wavelength ntawm 1535 nm. Cov kabmob kho qhov muag kho tau yooj yim ntawm kev hnav mus rau qhov rov qab mus rau kev kis kab mob uas tsis muaj kev sib tw tsawg heev.
Ntawm no yog cov duab uas pom cov duab spectrum ntawm ib lub suab-pumped RFA amplifier thiab cov teeb liab tau txais tom qab tib ntev ntawm fiber ntau siv nyob rau hauv cov qauv SRS. Lub teeb liab tau txhaj tshuaj los ntawm 1535 nm twj tso kua mis ntawm qhov sib tw kawg es tsis tau txais qhov kawg. Feem ntau, qhov puv ntim ntawm lub tshuab fais fab tshaj qhov ntawm cov ntaub ntawv qhia.
Nrog rau kev txo qis ntawm lub piston ntawm lub piston, qhov loj ntawm cov ntaub ntawv qhia txog 6 tau nce, muab rau tag nrho rau (6) signals zoo sib npaug. Nyob rau hauv qhov no, cov nyhuv SRS nyiag loj zog ntawm lub tshuab 1535 nm twj poom liab thiab rov faib rau lub zog rau cov ntaub ntawv qhia txog 6.
