1, optical modem yog lub teeb liab kho qhov muag rau hauv Ethernet hluav taws xob teeb liab cov cuab yeej, kho qhov muag modem yog Ameslikas hu ua modem, yog ib hom computer hardware, yog nyob rau hauv kev xa mus kawg los ntawm kev hloov pauv ntawm cov teeb liab digital rau hauv cov cim analog, thiab thaum kawg tau txais los ntawm demodulation analog signals rau hauv digital signals ib lub cuab yeej.
Optical Network Unit (ONU) yog ib qho chaw kho qhov muag.ONU muab faib ua active optical network units thiab passive optical network units.ONU feem ntau yog siv los txais cov ntaub ntawv tshaj tawm xa los ntawm OLTs.Ntxiv nrog rau kev ua haujlwm ntawm lub teeb miv, ONU kuj muaj kev ua haujlwm ntawm kev hloov.
2, onu muab faib ua a, b, c chav kawm, tag nrho peb yog kho qhov muag nkag, tab sis muab cov neeg siv cov naj npawb ntawm cov chaw nres nkoj, hom chaw nres nkoj sib txawv, optical modem yog qhov tseeb ntawm chav kawm onu.
Optical modem, tseem hu ua optical cat, yog ib qho khoom siv network uas xa cov teeb liab kho qhov muag mus rau lwm qhov raws tu qauv los ntawm kev tshaj tawm fiber ntau.Nws yog ib qho khoom siv sib kis tau rau cov cheeb tsam loj hauv cheeb tsam (LAN), thaj chaw hauv nroog loj (MAN), thiab thaj chaw dav dav (WAN).Cov cuab yeej yog tsim los ntawm kev xa, txais, tswj, interface, thiab fais fab mov.Nws siv cov chips loj sib xyaw ua ke, yooj yim Circuit Court, siv hluav taws xob tsawg, kev ntseeg siab, ua tiav lub tswb ntsuas qhov ntsuas, thiab kev tswj hwm kev ua haujlwm zoo tshaj plaws.
Optical fiber kev sib txuas lus tau tsim sai heev rau hauv daim ntawv tseem ceeb ntawm cov ntaub ntawv kis tau tus mob vim nws qhov zoo xws li qhov dav zaus band thiab muaj peev xwm loj.Txhawm rau kom paub txog kev sib txuas lus kho qhov muag, kho qhov muag kho qhov muag thiab demodulation yuav tsum tau ua.Yog li ntawd, raws li ib tug tseem ceeb ntaus ntawv ntawm optical fiber kev sib txuas lus system, kho qhov muag modem tau txais ntau thiab ntau xim.Muaj ob hom optical modulators: ncaj qha modulator thiab sab nraud modulator, thiab kho qhov muag demodulator muab faib ua ob hom: nrog thiab tsis muaj built-in pem hauv ntej amplifier.Direct modulator thiab demodulator nrog built-in pem hauv ntej amplifier yog tsom ntawm qhov project no.Direct modulation muaj qhov zoo ntawm kev yooj yim, kev lag luam thiab kev siv yooj yim, thaum lub demodulator nrog built-in pem hauv ntej amplifier muaj cov yam ntxwv ntawm kev sib koom ua ke siab thiab me me.
optical modem yog ib qho khoom siv sib txuas uas tuaj yeem txuas rau Is Taws Nem nrog kev sib txuas ntawm lub network cable, zoo ib yam li peb lub teeb ci hauv Internet, tab sis lub siab kawg ntawm tus miv txuas nrog lub voj voog, thiab sab sauv kawg ntawm qhov kho qhov muag modemis txuas nrog. mus rau txoj kev kaj, thiaj li hu ua lub teeb miv.Ib tug miv txuas nrog txoj kev teeb.Qhov qis kawg ntawm onu hauv epon / GPON txuas nrog tus neeg siv.
1, optical modem yog hom onu, yog rau ib tus neeg siv, optical modem kuj tuaj yeem hais tias yog desktop onu.
2, lub ntsiab onu yog rau cov neeg siv ntau, uas yog, qhov hluav taws xob chaw nres nkoj muaj 8 mus rau 24 pon ports.Optical modem tsuas muaj 1-4 qhov chaw nres nkoj hluav taws xob.
Qhov txawv ntawm optical modem thiab ONU:
optical modem feem ntau yog siv thaum cov neeg siv khoom loj, feem ntau yog rau kev nkag mus rau cov ntaub ntawv tshwj xeeb.
optical modem daim npav hom thiab desktop, daim npav hom feem ntau muab chav tshuab.
Lub desktop feem ntau yog muab tso rau ntawm tus neeg siv khoom.ONU yog siv rau broadband nyob hauv lub network nkag.Qhov sib txawv tseem ceeb yog los ntawm chav sib koom ua ke daim npav kho qhov muag miv rau tus neeg siv khoom duab kho qhov muag miv, ib khub ntawm cov miv kho qhov muag rau ib khub ntawm fibers, thiab los ntawm chav sib xyaw OLT rau cov neeg siv ntau ONUs kuj nyob tsuas yog ib khub ntawm fibers, thiab qhov nruab nrab mus los ntawm kev sib cais.Qhov txawv ntawm optical modem thiab ONU yog tias ONU txuag cov khoom siv fiber ntau, thiab optical modem yog pheej yig dua, thiab ob lub teeb miv yog ntau pua daim.Dab tsi yog siv, kev txheeb xyuas dav dav ntawm tus nqi, raws li qhov xwm txheej.
Post lub sij hawm: Dec-14-2023