Ob Hom Kev Sib Tw ntawm Cov Khoos Phis Kho Hniav - FBT Thiab PLC
Tau ntau xyoo dhau los, kev kho qhov muag thev naus laus zis tau ua ib kauj ruam loj dua rau kev ua kom tau raws li cov kev xav tau nce ntxiv hauv kev ua yeeb yaj kiab kho qhov muag hauv cov ntawv thov fiber ntau. Siv tshuab splitter piv txwv, kev nce qib tau ua hauv nws cov kev tsim khoom thiab ntim, uas ua rau kev sib cais tshwj xeeb tshaj tawm cov cuab yeej tseem ceeb hauv cov phiaj xwm kho qhov muag (PON).
Optical splitter, hu ua nqaj splitter, yog raws li quartz txheej nruab nrab ntawm kev sib xyaw waveguide optical zog faib cov khoom, zoo ib yam li cov coaxial cable kis tau txais. Raws li ib qho tseem ceeb hauv kev ua haujlwm siab passive optical, splitter kho qhov muag tseem hu ua passive optical splitter los yog PON splitter, uas yog siv los faib cov fiber ntau rau lub teeb ci kom zoo nkauj mus rau ntau qhov chaw ntawm qee qhov sib piv. Optical splitters raug tsim tawm ua ob hom raws li tus qauv ua haujlwm - FBT (Fused Biconical Taper) splitter thiab PLC (Planar Lightwave Circuit) splitter. Txhua hom tau nws tus kheej ua yeeb yam.
Fused Biconical Taper yog ib hom kev siv thev naus laus zis nyob rau hauv uas ob lossis ntau tshaj ob lub fiber ntau tau sib txuas ua ke los ntawm kev thov ua kom sov. Muaj cov ntaub ntawv txaus siv rau kev ua rau FBT splitters , xws li cov hlau, fiber, dorm kub. Lawv tuaj ntawm tus nqi pheej yig, uas piav qhia txog tus nqi zoo-ntaus nqi ntawm lub cuab yeej nws tus kheej. Raws li cov thev naus laus zis no tau tsim tiav raws sij hawm, FBT splitters tau ntau dua thiab tsim nyog rau ntau daim ntawv thov. Lawv siv tau rau ob qho tib-hom thiab ntau hom fiber ntau ua raws li ntau yam ntawm cov khoom siv sib txuas, dav txais thiab siv nyob rau hauv kev sib txuas sib koom ua ke, tshwj xeeb tshaj yog rau qee qhov chaw sib cais me dua (1 × 2, 1X4, 2 × 2, thiab lwm yam) .). Daim duab hauv qab no qhia ib 1 × 4 ib hom FBT splitter.
Txawm li cas los xij, FBT splitters tsuas yog txhawb nqa peb nthwv dej (850/1310/1550 nm), txhais tau tias lawv tsis tuaj yeem ua haujlwm ntawm lwm lub yoj hluav taws xob. Ntxiv mus, lawv xav tau rau kev ua haujlwm ruaj khov ntawm -5 txog 75 ℃, rhiab rau qhov siab kub. Rau FBT splitters, qhov tseeb heev txawm tias nyob rau hauv kev sib cais cov cim yeej ua tsis tau vim tias tsis muaj kev tswj hwm ntawm lub teeb liab.
Planar Lightwave Circuit splitters, uas nyob rau ntawm qhov tsis ntev los no ntau dua Planar Lightwave Circuit thev naus laus zis, muaj kev daws teeb meem zoo dua rau cov ntawv thov uas qhov loj dua kev sib cais yuav tsum muaj. Lawv txhawb wavelengths los ntawm 1260 txog 1650 nm, qhov ntau yam tsim nyog rau qhov kev txiav tawm ntawm wavelength. Dhau li, qhov ntsuas kub (-40 txog 85 ℃) ua haujlwm tau rau PLC splitters, tso cai rau lawv siv nyob rau hauv huab cua tsis zoo. Ntxiv mus, cov paib tuaj yeem sib cais sib txig vim siv tshuab ua haujlwm. Qhov tsis zoo los txog tias PLC splitters yog kev sib tov los ntawm kev siv cov khoom siv thev duab hluav taws xob (lithography, etching, tsim tawm tshuab) ntau lawm, yog li nws nyuaj thiab nyuaj los tsim lawv. Yog li ntawd, tus nqi ntawm PLC splitter nws tus kheej yog siab dua. Daim duab ntawm 1 × 4 Fiber PLC Splitter nrog Yas ABS Box Pob hauv qab.
Ob qho FBT splitters thiab PLC splitters tau pom lawv txoj hauv kev hauv cov kab ke kho qhov muag nrog kev nthuav dav sai hauv FTTX tes hauj lwm. Hauv FOCC, koj tuaj yeem nrhiav PLC splitters nrog cov txheej txheem LGX thiab ABS lub thawv, nrog rau FBT coupler splitters nrog ib qho, dual thiab peb lub qhov rais rau PON system. Thov mus xyuas FOCC yog xav paub ntxiv txog kev sib cais ntawm cov ntsej muag