Optical amplifier yog ib qho tseem ceeb ntaus ntawv xa mus rau kev sib txuas lus kho qhov muag thiab lub ntsej muag laser. Tsis tas yuav hloov ua lub teeb liab kis mus rau hluav taws xob ua ntej, kho qhov muag tau txuas ntxiv kom ncaj qha ua kom nrov loj dua cov teeb liab kho qhov muag. Nws tau suav hais tias yog lub laser tsis muaj qhov kho qhov muag lossis nrog cov lus txhawb nqa los ntawm cov kab noj hniav. Optical amplifiers feem ntau tau nruab rau ntawm qhov chaw uas cov cim hluav taws xob tsis muaj zog thiab xav tau kev ua kom zoo dua. Qhov no ua kom paub tseeb ntawm kev sib kis zoo ntawm cov cim kho qhov muag hauv cov seem hluav taws xob. Yog li, peb yuav tsum txuas qhov tseem ceeb dua rau qhov kho qhov muag kom nrov dua. Thiab tsab xov xwm no yuav coj koj mus paub txog cov lus zais ntawm kho qhov muag kom nrov dua.
Kev khiav dej num ntawm Optical Amplifier
Hauv qhov khoos phis tawm kho qhov muag, cov qhov muag hluav taws xob tuaj yeem siv los ua cov tshuab loj, cov tshuab nyeem ua ntej lossis cov kab sab hauv. Cov haujlwm no yuav txawv me ntsis ntawm txhua lwm yam. Thaum kho qhov muag pom qhov dav dav ua raws li lub zog tsim, nws yog siv los ua kom nrov loj cov lus taw qhia uas tawm hauv lub transmitter mus rau theem qib uas yuav tsum tau ua ntej nkag mus rau hauv cov kab sib txuas. Lub rooj zaum ua kom muaj zog yog tshwj xeeb tshaj rau WDM txuas raws li qhov sib txuam sib zog kom pom cov cim kho qhov muag. Pre-amplifier siv nyob rau lwm qhov kawg ntawm qhov txuas txuas kom ua kom nrov loj ntawm lub teeb liab theem rau nws kom raug kuaj dua los yog siab dua cov suab nrov thermal ntawm tus txais. Raws li rau inline amplifier, nws yog siv rau kev sib txuas ntau dua 150 km hauv cov cim qhov teeb meem ua tsis muaj zog hauv kev nyob deb. Txhua txhua 80 txog 100 km, inline amplifier yuav muab tso rau kom paub tseeb tias cov teeb liab theem dhau ntawm cov suab nrov nrov hauv pem teb.
Peb Hom Optical Amplifiers
1) Erbium Doped Fiber Amplifier (EDFA)
Erbium doped fiber ntau lub zog lossis EDFA yog tam sim no feem ntau siv dav kho qhov muag amplifier rau cov kev sib txuas lus fiber ntau ntev. Nws cov fiber ntau kho qhov muag (feem ntau siv ib hom fiber ntau) ntawm cov tub ntxhais yog doped nrog lub ntiaj teb tsis tshua muaj erbium los nqus lub teeb ntawm ib qho zaus thiab tawm teeb ntawm lwm zaus. Lub teeb yog pumped los ntawm laser diodes nrog lub yoj ncig ntawm 980 nm thiab qee zaum ncig 1480 nm. EDFA muaj qhov zoo ntawm qhov nce siab, dav bandwidth, tso zis ntau zog, muaj peev xwm ua haujlwm siab, tsis muaj qhov nkag tsis tau thiab qhov ua tsis tau zoo rau lub xeev polarization uas tig los ua cov tshuaj zoo rau DWDM, CATV thiab SDH kev siv.
2) Raman Amplifier
Raman amplifier yog tsim raws Raman qhov nce uas tshwm sim los ntawm cov nyhuv ntawm stimulated Raman tawg. Thaum qis dua lub teeb liab photon induces kev sib cais tsis sib xws ntawm lub siab dua cov twj tso kua mis photon hauv qhov nruab nrab kho qhov muag nyob rau hauv tsoomfwv tsis muaj txheej txheem, lwm lub teeb liab photon yog tsim nrog lub zog hluav taws xob resonantly dhau mus rau lub suab kev co ntawm qhov nruab nrab. Raman amplifier feem ntau nruab rau hauv nruab nrab ntawm kwj ntawm lub teeb liab lossis pem hauv ntej ntawm lub txais khoom kom ua kom nrov loj ntawm cov teeb liab theem. Nws muaj qhov zoo ntawm kev ua haujlwm ntau dua wavelength, qhov kev hloov kho kom tsis tu ncua thiab muaj txiaj ntsig zoo txo lub suab.
3) Semiconductor Optical Amplifier (SOA)
Lub tshuab hluav taws xob (semiconductor optical amplifier) lossis SOA yog lub tshuab hluav taws xob ntxiv raws li cov khoom siv semiconductor nce nruab nrab. Lub teeb tau xa los ntawm cov semiconductor ib hom waveguide nrog transverse qhov ntev. SOA feem ntau txuas nrog kev tsim tawm ntawm 1310nm transceivers kom nrov dua theem teeb liab ua ntej nkag mus rau hauv cov kab hluav taws xob. Nws txhawb nqa txhua hom ntawv ntawm 1310nm wavelength teeb thiab tau tshaj txhua tus nqi ntawm cov ntaub ntawv. Yog li, SOA yog ib qho kev daws teeb meem zoo rau DWDM network optical amplification.
Xaus
Los suav txog, kho qhov muag kom nrov dua ntxiv kho qhov muag kis tau qhov ntev ntev los ntawm kev ua kom nrov loj. Kab lus no qhia txog cov laj thawj ntawm nws txoj haujlwm thiab qee hom kev siv ntau. Tej zaum koj yuav muaj kev nkag siab tag nrho txog ntawm lub tshuab ntsuas hluav taws xob. Yog xav paub ntxiv, thov mus xyuas HTFWDM.COM.
