Muma network ePON (Passive Optical Network), kunyanya mukati me complex point-to-multipoint PON ODN (Optical Distribution Network) topology, kukurumidza kutarisa uye kuongorora faults dzefiber kunounza matambudziko makuru. Kunyangwe ma optical time domain reflectometers (OTDRs) ari maturusi anoshandiswa zvakanyanya, dzimwe nguva haakwanise kuona signal attenuation muODN branch fibers kana paONU fiber ends. Kuisa wavelength-selective fiber reflector inodhura zvishoma kudivi reONU itsika yakajairika inoita kuti kuyerwa kwakanyatsojeka kwe optical links.
Chiratidziro chefiber chinoshanda nekushandisa optical fiber grating kuratidza OTDR test pulse kumashure neinoda kusvika 100% reflectivity. Panguva iyi, wavelength yakajairika ye passive optical network (PON) system inopfuura nepakati pe reflector nekurerutswa kushoma nekuti haikwanirise mamiriro eBragg e fiber grating. Basa guru reiyi nzira nderekuverenga nemazvo kukosha kwekurasikirwa kwekudzoka kwechiitiko chega chega che ONU branch termination nekuona kuvapo uye simba rechiratidzo che OTDR test chakaratidzwa. Izvi zvinogonesa kuona kana kubatana kwe optical pakati pemativi eOLT neONU kuri kushanda zvakanaka. Nekuda kweizvozvo, inoita kuti ikwanise kutarisa nzvimbo dzekutadza panguva chaiyo uye kuongororwa nekukurumidza uye kwakarurama.
Nekushandisa ma reflectors kuti aone zvikamu zvakasiyana zveODN, zvinogona kukurumidza kuonekwa, kuwanikwa, uye kuongororwa kwezvikonzero zvezvikanganiso zveODN, zvichideredza nguva yekugadzirisa zvikanganiso ukuwo zvichivandudza kushanda kwekuyedza uye kunaka kwekugadzirisa mitsara. Muchiitiko chekutanga chekuparadzanisa, ma fiber reflectors akaiswa kudivi reONU anoratidza matambudziko apo reflector yebazi inoratidza kurasikirwa kwakanyanya kwekudzoka zvichienzaniswa nebaseline yayo ine hutano. Kana matavi ese e fiber ane ma reflectors achiratidza kurasikirwa kukuru kwekudzoka panguva imwe chete, zvinoratidza kukanganisa mu main trunk fiber.
Muchiitiko chechipiri chekupatsanura, musiyano wekurasikirwa kwekudzoka unogona kuenzaniswawo nekuona nemazvo kana zvikanganiso zvekudzikira kweattenuation zvichiitika muchikamu che fiber chekugovera kana chikamu che fiber chinodonha. Ingave muzviitiko zvekutanga kana zvechipiri zvekupatsanura, nekuda kwekudonha kamwe kamwe kwe peaks dze reflection pakupera kwe OTDR test curve, kukosha kwekurasikirwa kwekudzoka kwe branch link refu kwazvo mu ODN network kungasave kwakanyatsoyerwa. Nokudaro, shanduko mu reflection level ye reflector inofanira kuyerwa sehwaro hwekuyera zvikanganiso uye kuongororwa.
Magirazi emagetsi anogonawo kuiswa panzvimbo dzinodiwa. Semuenzaniso, kuisa FBG pamberi peFiber-to-the-Home (FTTH) kana Fiber-to-the-Building (FTTB) entry points, wobva waedza neOTDR, kunobvumira kuenzanisa data rekuyedza nedata rekutanga kuti uone zvikanganiso zvemukati/kunze kana mukati/kunze kwechivako.
Magirazi eFiber optic anogona kuiswa zviri nyore mumutsara pamushandisi. Nguva yawo yakareba, kuvimbika kwakasimba, hunhu hushoma hwekupisa, uye chimiro chiri nyore chekubatanidza ma adapter ndezvimwe zvezvikonzero zvinoita kuti ive sarudzo yakanaka yekutarisa ma terminal e optical yeFTTx network link. Yiyuantong inopa magirazi eFBG fiber optic mumhando dzakasiyana dzemapurasitiki, kusanganisira mapurasitiki epurasitiki, magirazi esimbi, uye mafomu e pigtail ane SC kana LC connectors.
Nguva yekutumira: Gunyana-11-2025