Nyob rau hauv PON (Passive Optical Network) tes hauj lwm, tshwj xeeb tshaj yog nyob rau hauv complex point-to-multipoint PON ODN (Optical Distribution Network) topologies, ceev ceev saib xyuas thiab kuaj cov fiber ntau faults tam sim no muaj teeb meem loj. Txawm hais tias optical time domain reflectometers (OTDRs) yog cov cuab yeej siv dav, qee zaum lawv tsis muaj qhov txaus ntshai rau kev kuaj pom cov teeb liab attenuation hauv ODN ceg fibers lossis ntawm ONU fibers. Txhim kho tus nqi qis-nqi-xaiv fiber ntau reflector ntawm ONU sab yog ib qho kev coj ua uas ua rau qhov tseeb qhov kawg-rau-kawg attenuation ntsuas ntawm optical links.
Cov fiber ntau reflector ua haujlwm los ntawm kev siv cov fiber ntau optical grating los cuam tshuam OTDR kuaj mem tes rov qab nrog ze li 100% kev cuam tshuam. Lub caij no, qhov kev ua haujlwm ib txwm ua haujlwm ntawm qhov kev ua haujlwm tsis zoo ntawm lub network (PON) dhau los ntawm qhov cuam tshuam nrog qhov qis qis vim nws tsis txaus siab rau lub fiber grating lub Bragg mob. Lub luag haujlwm tseem ceeb ntawm txoj hauv kev no yog txhawm rau xam cov nqi rov qab los ntawm txhua ONU ceg txiav tawm qhov kev xav txog qhov tshwm sim los ntawm kev txheeb xyuas qhov muaj thiab kev siv ntawm qhov cuam tshuam OTDR lub teeb liab. Qhov no ua rau kev txiav txim siab seb qhov kev sib txuas kho qhov muag ntawm OLT thiab ONU sab puas ua haujlwm li qub. Yog li ntawd, nws ua tiav lub sijhawm saib xyuas ntawm cov ntsiab lus txhaum thiab nrawm, raug kuaj xyuas.
Los ntawm kev hloov pauv hloov pauv los txheeb xyuas qhov sib txawv ODN ntu, kev tshawb pom sai, chaw nyob, thiab lub hauv paus ua rau kev tsom xam ntawm ODN qhov tsis raug tuaj yeem ua tiav, txo qis kev daws teeb meem lub sijhawm thaum txhim kho kev ntsuas kev ua tau zoo thiab kev saib xyuas kab. Hauv qhov xwm txheej tseem ceeb ntawm kev sib cais, fiber ntau reflectors ntsia rau ntawm ONU sab qhia txog cov teeb meem thaum ib ceg ntawm lub reflector qhia tau hais tias qhov rov qab poob ntau dua piv rau nws cov hauv paus kev noj qab haus huv. Yog hais tias tag nrho cov ceg fiber ntau nruab nrog cov reflectors ib txhij ua pov thawj hais tias rov qab poob, nws qhia tau hais tias muaj kev txhaum nyob rau hauv lub ntsiab lub cev fiber.
Hauv qhov xwm txheej thib ob, qhov sib txawv ntawm qhov poob rov qab tuaj yeem muab piv rau qhov tseeb tias qhov kev cuam tshuam ntawm qhov cuam tshuam tshwm sim hauv ntu fiber ntau los yog qhov poob fiber ntau. Txawm hais tias nyob rau hauv thawj lossis theem nrab sib cais qhov xwm txheej, vim qhov poob qis hauv kev xav txog qhov kawg ntawm qhov kawg ntawm OTDR kev ntsuas nkhaus, qhov rov qab poob tus nqi ntawm cov ceg txuas ntev tshaj plaws hauv ODN network yuav tsis raug ntsuas tau meej. Yog li ntawd, kev hloov pauv ntawm qhov ntsuas qhov cuam tshuam yuav tsum tau ntsuas raws li lub hauv paus rau kev ntsuas qhov txhaum thiab kev kuaj mob.
Optical fiber ntau reflectors tuaj yeem xa mus rau ntawm qhov chaw xav tau. Piv txwv li, txhim kho FBG ua ntej Fiber-to-the-Home (FTTH) lossis Fiber-to-the-Building (FTTB) cov ntsiab lus nkag, tom qab ntawd sim nrog OTDR, tso cai rau kev sib piv ntawm cov ntaub ntawv ntsuas tawm tsam cov ntaub ntawv hauv paus txhawm rau txheeb xyuas qhov teeb meem sab hauv / sab nraum zoov lossis lub tsev sab hauv / sab nrauv fiber ntau.
Fiber optic reflectors tuaj yeem yooj yim muab tso rau hauv series ntawm tus neeg siv kawg. Lawv lub neej ntev, kev cia siab ruaj khov, cov yam ntxwv kub tsawg, thiab cov qauv sib txuas yooj yim adapter yog ib qho ntawm cov laj thawj uas lawv yog qhov zoo tshaj plaws optical davhlau ya nyob twg xaiv rau FTTx network txuas saib xyuas. Yiyuantong muaj FBG fiber optic reflectors nyob rau hauv ntau hom ntim, nrog rau cov yas thav duab tes tsho, hlau ncej tes tsho, thiab pigtail daim ntawv nrog SC los yog LC connectors.
Lub sij hawm xa tuaj: Sep-11-2025