WDM + EPON cov kev daws teeb meem
EDFA hauv WDM cov tshuab tuaj yeem siv ua qhov khoom siv ua ntej, cov lus ua haujlwm thiab cov tshuab kom muaj zog. Thaum EDFA rau preamplifier, muab tso ua ntej lub txais kev kho qhov muag, txhawm rau txhim kho qhov rhiab heev ntawm cov neeg tau txais kev kho qhov muag, feem ntau ua haujlwm me me-teeb lossis kab, lub teeb liab tawm tswv yim zog txog li 40dBm. Qhov yuav tsum tau ntawm EDFA qhov nce siab txaus, lub suab nrov yog me dua qhov zoo dua.
Thaum siv ua kab hluav taws xob EDFA tuaj yeem muab tso ncaj qha rau cov kab hluav taws xob xa xov txuas ntxiv raws li cov lus rov tso tawm cov lus rov ntxiv, tshem tawm cov hluav taws xob relay kho qhov muag / hluav taws xob / cov txheej txheem hloov kho hluav taws xob ncaj qha ua kom nrov kho qhov muag kom them rau cov kis kab poob, ncua kev sib txawv deb. Feem ntau ua haujlwm nyob ze ntawm kev nyob tsis txaus, lub teeb liab tawm tswv yim zog ntawm txog 20dBm.
Xav tau ob qho siab EDFA qhov nce thiab tso tawm lub zog kho qhov muag, yuav tsum muaj lub sijhawm saib xyuas tseeb ntawm nws txoj haujlwm kev ua haujlwm. EDFA siv lub zog ua kom muaj zog, txuas ntxiv tom qab lub tshuab hluav taws xob kho qhov muag, lub teeb tsa hluav taws xob tau tsim kho kom pom kev ua kom qhov kev sib tw ploj rau qhov ua kom qhov tsis ua dhau thiab ua kom muaj qhov kis tau hluav taws xob ntxiv.
WDM ntiv nplhaib network lub cev topology yog lub nplhaib, kev faib tawm nws cov neeg ua haujlwm pabcuam kev txiav txim siab qhov wavelength channel faib qauv, thiab yog li yuav tsum tau ua raws li WDM lub nplhaib cov neeg sawv cev pabcuam kev faib tawm thiab kev npaj cov koomhaum ua haujlwm wavelength channel faib ntawm WDM nodes. Ib qho kev xa xov dav dav rau cov chaw pabcuam, muaj ob hom, hu ua centralized convergent thiab hom yam tsis sib thooj, thiab yog li lub nthwv dej WDM nplhaib network kab ke kev faib qauv tseem tuaj yeem faib ua centralized sib xyaw ua ke ua ke, hom kev sib tw (mesh) lossis saum toj no ob hom. Cov kev faib ua lag luam nyob rau hauv dav dav yog lub hnub qub lossis binary daim ntawv, piv txwv li, kev faib khoom faib rau ib lossis ob qho tshwj xeeb (xws li tandem lossis pass office); kev faib khoom lag luam metro aggregation txheej feem ntau yog ib lub hnub qub lossis cov duab binary.
Triple ua yeeb yaj kiab video multiplexing optical fiber ntau 1000M / 100M tus nqi thiab Is Taws Nem ntug router lossis hloov txuas sib txuas ua ke kom ua tiav cov xov tooj ntawm tes nkag mus rau Is Taws Nem, los ntawm optical fiber thiab optical fiber CATV network txuas los ntawm hloov fiber.
Broadband siv Internet, cable TV (CATV) nkag mus thiab IP telephony triple ua si fiber ntau rau hauv tsev (FTTH) kev daws teeb meem rau kev sib tham.
Network cov cuab yeej siv tau muab tso rau hauv cov zej zog chav lossis chav tsev ua si peb chav ua si video multiplexing kho qhov muag, ua cov cuab yeej sib tw ua si video multiplexed optical fiber ntau 1000M / 100M tus nqi thiab Internet ntug router lossis kev sib txuas ua ke txuas los ntawm optical hloov mus, kom ua tiav kev nkag mus nyob hauv network siv Internet , ntawm optical fiber thiab optical fiber CATV network txuas.
Feem ntau, CATV optical teeb liab los ntawm erbium-doped fiber amplifier (EDFA) amplification thiab tom qab ntawd nkag mus rau triple play video multiplexing optical keyboards.
Triple ua yeeb yaj kiab video multiplexing thiab muab tso rau hauv tus neeg siv lub tsev kho qhov muag network txuas nrog los ntawm cov kab hluav taws xob fiber ntau thiab taw qhia txoj hauv kev dhau lub fiber ntau, thaum muab cov neeg siv cov khoom siv high-speed duplex 100M ceev Internet, CATV tshaj tawm xov tooj thiab IP nkag mus.
