Fiber rau Lub Tsev (FTTH) yog ib qho system uas nruab fiber ntau optics los ntawm lub hauv paus ntsiab lus ncaj qha mus rau hauv ib lub tsev xws li tsev thiab cov tsev. Kev xa tawm FTTH tau los ntev ua ntej cov neeg siv tau txais fiber ntau optics es tsis txhob siv tooj liab rau broadband Internet.
Muaj ob txoj hauv kev rau kev siv lub siab ceev FTTH network:active optical networks(AON) thiab passiveoptical networks(PON).
Yog li AON thiab PON networks: dab tsi yog qhov txawv?
AON network yog dab tsi?
Ib qho AON yog qhov taw qhia-to-point network architecture uas txhua tus neeg siv khoom muaj nws tus kheej fiber ntau optic kab uas raug txiav tawm ntawm qhov chaw kho qhov muag. AON network encompasses cov khoom siv hluav taws xob hloov hluav taws xob xws li routers lossis hloov cov khoom sib txuas los tswj cov teeb liab kev faib tawm thiab kev taw qhia kev taw qhia rau cov neeg siv khoom tshwj xeeb.
Cov keyboards tau qhib thiab tawm hauv ntau txoj hauv kev los coj cov cim nkag thiab tawm mus rau qhov chaw tsim nyog.Lub AON network kev cia siab rau Ethernet thev naus laus zis ua rau muaj kev sib tshuam ntawm cov chaw muab kev pabcuam yooj yim. Cov neeg siv khoom tuaj yeem xaiv cov khoom siv uas muab cov ntaub ntawv tsim nyog thiab ntsuas raws li lawv cov kev xav tau nce ntxiv yam tsis tas yuav teeb tsa lub network. Txawm li cas los xij, AON tes hauj lwm xav tau tsawg kawg ib qho kev sib txuas sib txuas rau ib tus neeg siv khoom.
PON network yog dab tsi?
Tsis zoo li AON tes hauj lwm, PON yog point-to-multipoint network architecture uas siv passive splitters cais thiab sau optical signals. Fiber splitters tso cai rau PON network los pab ntau tus neeg siv khoom hauv ib qho fiber ntau yam tsis tas yuav xa cov fibers cais ntawm lub hub thiab cov neeg siv kawg.
Raws li lub npe qhia, PON tes hauj lwm tsis suav nrog cov khoom siv hluav taws xob hloov hluav taws xob thiab faib cov khoom siv fiber ntau rau feem ntawm lub network. Cov cuab yeej siv tau tsuas yog xav tau ntawm qhov chaw thiab tau txais qhov kawg ntawm lub teeb liab.
Nyob rau hauv ib txwm PON network, PLC splitter yog lub hauv paus. Fiber optic kais muab ntau lub teeb liab kho qhov muag rau hauv ib qho kev tso zis, lossis fiber ntau optic kais coj ib qho kev tawm tswv yim kho qhov muag thiab xa mus rau ntau tus neeg tso tawm. Cov kais dej no rau PON yog bidirectional. Kom meej meej, fiber optic teeb liab tuaj yeem xa mus rau hauv qab ntawm lub chaw haujlwm hauv nruab nrab kom tshaj tawm rau txhua tus neeg siv khoom. Cov teeb liab los ntawm cov neeg siv khoom tuaj yeem xa mus rau sab saud thiab ua ke rau hauv ib qho fiber ntau los sib txuas lus nrog lub hauv paus chaw ua haujlwm.
AON vs PON Networks: Qhov txawv thiab kev xaiv
Ob lub PON thiab AON tes hauj lwm tsim cov fiber ntau optic qaum ntawm FTTH system, tso cai rau tib neeg thiab cov lag luam nkag mus rau hauv Internet. Ua ntej xaiv PON lossis AON, nws yog ib qho tseem ceeb kom nkag siab txog qhov sib txawv ntawm lawv.
Kev faib tawm
Thaum nws los txog rau AON thiab PON tes hauj lwm, qhov sib txawv tseem ceeb ntawm lawv yog txoj hauv kev uas cov teeb liab kho qhov muag tau muab faib rau txhua tus neeg siv khoom hauv FTTH system. Hauv AON system, cov neeg siv khoom tau mob siab rau cov khoom siv fiber ntau, uas tso cai rau lawv nkag mus rau tib lub bandwidth, tsis yog ib qho sib koom. Hauv PON network, cov neeg siv khoom sib koom ib feem ntawm lub network fiber ntau hauv PON. Raws li qhov tshwm sim, cov neeg siv PON kuj tseem pom tias lawv lub kaw lus qeeb dua vim tias txhua tus neeg siv sib koom tib lub bandwidth. Yog tias muaj teeb meem tshwm sim hauv PON system, nws tuaj yeem nyuaj nrhiav qhov chaw ntawm qhov teeb meem.
Tus nqi
Cov nuj nqis tseem ceeb tshaj plaws hauv lub network yog tus nqi ntawm cov khoom siv hluav taws xob thiab kev saib xyuas. PON siv cov khoom siv passive uas xav tau kev saib xyuas tsawg dua thiab tsis muaj hluav taws xob ntau dua li AON network, uas yog lub network nquag. Yog li PON pheej yig dua AON.
Kev Them Nqi Them Nqi thiab Daim Ntawv Thov
AON tuaj yeem npog qhov kev ncua deb txog li 90 mais, qhov PON feem ntau txwv los ntawm fiber ntau optic cable kab ntev txog 20 mais. Qhov no txhais tau hais tias cov neeg siv PON yuav tsum nyob ze rau thaj chaw ze rau lub hauv paus pib teeb liab.
Tsis tas li ntawd, yog tias nws cuam tshuam nrog ib daim ntawv thov lossis kev pabcuam, ntau lwm yam yuav tsum tau xav txog. Piv txwv li, yog tias RF thiab cov kev pabcuam video yuav tsum tau siv, ces PON feem ntau yog tib txoj kev siv tau. Txawm li cas los xij, yog tias txhua qhov kev pabcuam yog Internet raws tu qauv, ces PON lossis AON yuav tsim nyog. Yog tias muaj kev cuam tshuam ntev dua thiab muab lub zog thiab txias rau cov khoom siv hauv lub tshav pob tuaj yeem muaj teeb meem, ces PON yuav yog qhov kev xaiv zoo tshaj. Los yog, yog tias tus neeg siv khoom lag luam yog kev lag luam lossis qhov project muaj ntau lub tsev nyob, ces AON network yuav tsim nyog dua.
AON vs. PON Networks: Yam FTTH koj nyiam?
Thaum xaiv ntawm PON lossis AON, nws yog ib qho tseem ceeb uas yuav tsum xav txog seb cov kev pabcuam twg yuav raug xa tawm hauv lub network, tag nrho cov network topology, thiab leej twg yog cov neeg siv khoom tseem ceeb. Ntau tus neeg khiav dej num tau xa ib qho kev sib xyaw ntawm ob lub network hauv ntau qhov xwm txheej. Txawm li cas los xij, raws li qhov kev xav tau ntawm kev sib koom tes hauv kev sib koom tes thiab kev ua kom muaj peev xwm txuas ntxiv mus ntxiv, network architectures tab tom tso cai rau ib qho fiber ntau los siv sib hloov hauv PON lossis AON daim ntawv thov kom tau raws li cov kev xav tau yav tom ntej.
Post lub sij hawm: Oct-24-2024