Optical network davhlau ya nyob twg (feem ntau hu ua optical cat lossis optical modem), hais txog kev xa mus los ntawm the fiber ntau nruab nrab, qhov kho qhov muag teeb liab hloov kho thiab demodulation rau lwm cov kev cai raws tu qauv ntawm cov khoom siv network.Cov cuab yeej Lightcat ua raws li cov khoom siv sib kis tau rau cov cheeb tsam loj hauv cheeb tsam, cov cheeb tsam hauv nroog thiab cov cheeb tsam dav.Qhov sib txawv ntawm optical transceiver, optical transceiver tsuas yog txais thiab emits lub teeb, thiab tsis koom nrog kev hloov dua siab tshiab ntawm cov txheej txheem.
Lub Modem yog ib qho khoom siv hluav taws xob uas hloov kho cov teeb liab digital mus rau lub teeb liab analog rau kev sib kis, thiab demodulates cov teeb liab analog tau txais kom tau txais cov teeb liab digital.Nws lub hom phiaj yog tsim kom muaj lub teeb liab analog uas tuaj yeem kis tau yooj yim thiab rov qab kho tus lej qubl teeb liab los ntawm kev txiav txim siab.Nyob ntawm daim ntawv thov, MODEM tuaj yeem siv ntau txoj hauv kev los xa cov teeb liab analog, xws li fiber ntau optics, RF xov tooj cua, lossis xov tooj.
Xov tooj modems uas siv lub suab band ntawm ib tug xov tooj kab rau kev sib txuas lus cov ntaub ntawv yog cov most feem ntau ntsib modems.Hauv kev hais lus Askiv, ntau tus neeg xa mus rau lub xov tooj modem ua "miv" lossis "magic" raws li thawj lub suab ntawm cov lus Askiv.
Lwm cov modems muaj xws li cable modems rau broadband data access, ADSL modems, thiab fiber modems.Lub xov tooj ntawm tes digital yog qhov tseeb wireless modem.Cov khoom siv sib txuas lus niaj hnub no yog tsim los hloov cov ntaub ntawv ntau dhau ntawm kev sib txawv ntawm cov xov xwm sib txawv, yog li nws kuj yog raws li kev ua haujlwm ntawm modem.Microwave modems tuaj yeem siv ntau lab ntawm cov khoom ib ob.Optical modem siv fiber ntau optical raws li qhov nruab nrab kis tau mus txog ntau tshaj kaum ntawm Gbps, yog tam sim no lub caj qaum ntawm kev sib txuas lus kev sib txuas lus Passive optical network (Passive optical network), tseem hu ua passive optical fiber network, yog ib hom kev sib txuas lus kho qhov muag fiber ntau. network, uas yog yam ntxwv los ntawm tsis muaj fais fab mov los ua kom tiav cov teeb liab ua, ib yam li daim iav hauv tsev, nws tsis xav tau hluav taws xob los cuam tshuam cov duab, ntxiv rau cov khoom siv davhlau ya nyob twg yuav tsum tau siv hluav taws xob, cov nodes hauv nruab nrab yog ua los ntawm ilv thiab me me fiber optic Cheebtsam.
Raws li lub tswv yim ntawm New Generation Network (NGN), kev sib txuas lus hauv xov tooj tuaj yeem muab faib ua ob ntu: core network thiab nkag network.Lub core network yog sib npaug rau ib txwm relay thiab kab nyob deb.Lub network nkag tau muaj lub nplhaib ntawm fiber ntau optic cables.Lub luag haujlwm ntawm cov tub ntxhais network thiab kev nkag mus rau lub network sib txawv, thiab lawv cov ntawv sib kis kuj txawv.Yog li, PON daim ntawv thov tuaj yeem muab faib ua ob hom: PON ntawm cov tub ntxhais network thiab PON ntawm kev nkag network.Lub qub yog feem ntau raws li WDM, thiab tom kawg siv ob qho tib si optical diverter thiab WDM Cheebtsam.
Cov kev paub saum toj no yog cov lus piav qhia luv luv txog qhov kho qhov muag network davhlau ya nyob twg coj los ntawm Shenzhen HDV Phoelectron Technology LTD., uas yog cov chaw tsim khoom tshwj xeeb hauv kev sib txuas lus network khoom siv raws li nws cov khoom tseem ceeb.Lawv cov khoom siv muaj feem xyuam nrog rau:olt uaonu/ ntseonu/ aconu/ fiber ntauonu/cavonu/gpononu/ xpononu/ olt uakhoom siv /olt uahloov / gponolt ua/ eponolt uathiab lwm yam, zoo siab txais tos cov neeg siv khoom tuaj rau kev sib tham txog cov khoom.
