Centralized Splitting vs Faib Splitting hauv PON Raws li FTTH tes hauj lwm
Kev pom zoo ua qhov muag pom zoo (PON) raws li FTTH access network yog ib qho point-to-multipoint, fiber ntau rau cov chaw tsim vaj tse uas siv cov khoom siv kho qhov qub uas siv cov khoom siv fiber ntau los pab ntau qhov chaw. Lub tshuab fiber ntau optical fiber ntau tau muab tso rau hauv ntau qhov chaw ntawm PON raws li FTTH network, uas siv centralized (ib theem) los sis faib tawm (multi-stage) splitting configurations nyob rau hauv qhov kev faib khoom ntawm lub network. Qhov tseeb, ob qho tib si muaj nws txoj kev zoo thiab qhov tsis zoo. Koj yuav tsum xa ib tug twg? Kev sib piv nruab nrab ntawm kev faib kev faib tawm thiab faib cais yuav muab nyob rau hauv tsab ntawv no.
Fiber Splitter Centralized Splitting Txheej Txheem
Ib qho kev sib txuas ntawm kev siv zes siv feem ntau yog siv kev sib faib ua ke ntawm 1:64 (nrog 1: 2 splitter hauv central office, thiab 1:32 nyob rau hauv lub txee). Cov kab theem ib theem no muaj peev xwm muab tso rau hauv ntau qhov chaw hauv lub network los yog tsis muaj tsev nyob hauv qhov chaw nruab nrab. Tab sis feem ntau, qhov nruab nrab ntawm fiber ntau splitters raug muab tso rau sab nraum zoov (OSP) los txo cov nqi ntawm cov roj ntsha tag nrho. Qhov chaw kho qhov muag ntawm qhov chaw nres tsheb (OLT) hauv chaw ua hauj lwm (central) (CO) yuav txuas nrog / sib txuas mus rau ib lub tshuab fiber ntau tawm hauv CO Qhov fais fab no dhau los ntawm kev sib txawv kaw kom mus txog qhov chaw nres nkoj ntawm cov fais fab, feem ntau muab tso rau hauv lub txee. Chaw tso zis ntawm qhov chaw fais fab no mus rau ntawm qhov chaw faib khoom, mus rau cov tsev neeg muaj peev xwm los ntawm kev sib tshuam thiab cov chaw sab hauv / sab nraum zoov.
Daim duab 1: Nruab nrab nruab nrab
Fiber Splitter Faib Splitting Txheej Txheem
Tsis zoo li lub hauv paus tawg, ib qho kev sib faib sib faib sib faib tsis muaj fiber ntau hauv cov chaw ua haujlwm. Qhov chaw nres nkoj hauv OLT txuas nrog / tawm ncaj qha rau sab nraud cog paj ntoo. Thawj theem ntawm kev faib (1: 4 los yog 1: 8) yog muab tso rau hauv kev kaw, tsis deb ntawm lub hauv paus chaw ua haujlwm. Cov tswv yim ntawm no thawj theem fiber cais yog txuas nrog OLT fiber ntau los ntawm lub chaw ua haujlwm hauv paus loj. Ib theem thib ob ntawm fiber ntau splitters (1:16 los sis 1: 8) nyob hauv cov thawv ntawv dav hlau, ze rau cov neeg siv khoom (txhua qhov kev pov rau 8 mus rau 16 lub tsev). Cov kev nkag ntawm cov PON splitters yog cov fibers los ntawm cov kev kawm ntawm thawj theem ntawm cov kev piav qhia saum toj no.
Xam 2: Faib faib.
Fiber Splitter Centralized Splitting vs Faib Splitting
Los ntawm txoj kev paub txog ntawm kev faib tawm thiab kev faib faib rau saum toj no, peb tuaj yeem paub tias qhov kev cais ntawm kev faib tawm, tag nrho PON splitters nyob hauv ib qho kev kaw, uas yuav siv ntau tshaj qhov kev siv OLT thiab muab ib qho taw tes ntawm kev nkag mus rau kev txhim kho. Tab sis vim optical splitters yuav tsum tau kaw rau cov neeg los ntawm ib tug tib neeg splices los yog connectors, tus nqi ntawm cov khoom faib cab yuav siab heev. Nyob rau hauv cov nqe lus ntawm faib faib txoj kev, PON splitters yog nyob rau hauv ob los yog ntau ntau qhov kev kaw, uas yuav txo tsawg tus fiber ntau uas yuav tsum tau xa mus muab kev pab. Tab sis nws yuav tsim kev siv lub lag luam ntawm OLT PON cov chaw nres nkoj thiab tej zaum yuav nce cov kev xeem thiab sij hawm rov qab rau cov neeg muas zaub. Qhov zoo thiab qhov tsis zoo ntawm kev faib tawm thiab faib faib yog sau ua ke hauv cov lus hauv qab no:
| Zoo Tshaj Plaws | Disadvantages | |
|---|---|---|
| Nrov Nres | OLT siv (them raws li koj tuaj) | Ntau faib tshuab fiber ntau |
| Yav tom ntej pov thawj & yooj yim los hloov technology | Cov ntsiab lus loj dua hauv OSP | |
| Xyuas & kho | Tej zaum kuj muaj cov vaj tse ntxiv | |
| Faib Faib | Txo nuj nqis sab nraud rau cov neeg siv kev twb kev txuas | Ntxiv actives thiab ntau splitters |
| Txhim kho qhov txee nruab nrab ntawm qhov tsim nyog | Tsawg tsis tau yooj yim network | |
| Flexibility nyob hauv kev cais ntawm qhov kev pabcuam | Tsawg xyuas & kho tu tsev tu |
Xaus
Ua ntej yuav txiav txim siab twg txoj kev siv qhov kev faib tawm hauv PON raws li FTTH network, nco ntsoov xav txog txhua yam ntawm koj cov ntaub ntawv network. Txij li theem ntawm kev faib thiab faib faib ua ob qho tib si muaj qhov zoo tshaj plaws thiab kev tsim, qhov zoo tshaj plaws architecture yog ib qho uas ua tau raws li qhov yuav tsum tau ua thiab cov kev cia siab ntawm tus neeg zov me nyuam los ntawm kev txo cov nuj nqis peev nyiaj siv, kev siv nyiaj ua hauj lwm mus sij hawm ntev, thiab ua kom tsis muaj teeb meem yav tom ntej uas muaj peev xwm tiv thaiv nrog cov tshiab yees tsis hloov ua txoj haujlwm. FOCC muab tag nrho series 1xN los sis 2xN FBT thiab PLC splitters uas tau faib ib qho / cov khoom siv tswv yim optical rau ntau hom kev kho qhov muag, thiab muaj kev sib tw siab tshaj plaws, kev ruaj siab siab thiab kev ntseeg siab kom tau raws li ntau cov ntawv teev tseg.
