——Tam sim no, puas yog ib hom fiber ntau tseem yog daim ntawv thov kev sib kis ntawm fiber ntau?
—— Yog lawm, ntau cov tub ntxhais fiber ntau yog qhov kev sim ua kom tiav. Muaj qee qhov kev siv cuam tshuam, uas tseem tsis yog qhov tseem ceeb, tab sis yuav dhau los ua tau nyob rau tiam tom ntej.
Cov saum toj no yog luv luv pib ntawm OFweek Optical Communication thiab Xiao Limin los ntawm Lub Tsev Kawm Ntawv ntawm Kev Tshawb Fawb Txog Kev Tshawb Fawb thiab Engineering ntawm Fudan University ntawm cov ncauj lus ntawm kev siv fiber ntau optical.
Tsis ntev los no, Limin Xiao cov kev tshawb fawb pab pawg los ntawm Lub Tsev Kawm Ntawv ntawm Kev Tshawb Fawb Txog Kev Tshawb Fawb thiab Engineering ntawm Fudan University tau ua qhov tseem ceeb hauv kev tshawb fawb ntawm ntau cov tub ntxhais kho qhov muag fiber ntau fusion tshuab - npaj ntau cov tub ntxhais kho qhov muag fiber ntau-spacing converters nrog kev ua tau zoo heev, uas yog thawj zaug nyob rau hauv lub ntiaj teb no kom paub dissimilar multi-core optical fibers. Tsawg-poob thiab qis-crosstalk splicing ntawm. Hangzhou Softel Optic Co., Ltd ua kev zoo siab rau qhov no.
Txoj kev loj hlob tsis pom kev ntawm kev sib txuas lus optical fiber ntau
Tam sim no, nrog rau kev loj hlob sai ntawm huab xam, kev ua yeeb yaj kiab siab, Is Taws Nem ntawm Yam thiab 5G kev sib txuas lus, kev sib txuas lus thoob ntiaj teb tau nce ntau. Txawm li cas los xij, kev sib kis ntawm ib leeg-tub ntxhais ib hom fiber ntau yog txwv los ntawm Shannon txwv. Nyob rau hauv ob peb xyoos tom ntej no, qhov kev tsis sib haum xeeb ntawm qhov tsis muaj zog optical network loj hlob thiab kev lag luam qhov kev xav tau siab bandwidth yuav ua rau mob hnyav zuj zus, uas tau dhau los ua qhov teeb meem tseem ceeb uas yuav tsum tau daws sai sai hauv kev lag luam kho qhov muag.
Txhawm rau daws qhov teeb meem ntawm kev nthuav dav ntawm kev sib txuas lus kho qhov muag yav tom ntej, kev lag luam-pom zoo kev daws teeb meem los ua kom muaj peev xwm ntawm ib leeg fiber ntau yog siv qhov chaw faib multiplexing tshuab. Multi-core fiber, multi-mode fiber lossis multi-core multi-mode fiber ntau yog qhov kev txhim kho tsis pom kev ntawm kev sib txuas lus fiber ntau.
Ntau tus tub ntxhais kho qhov muag tau tuaj yeem ua kom muaj txiaj ntsig zoo ntxiv ntawm cov nplaim hluav taws xob ntawm cov duab hluav taws xob, thiab tau pom zoo los ntawm Is Taws Nem txawv teb chaws.
Txhawm rau txeeb kev lag luam kev sib txuas lus thiab nthuav dav kev sib kis ntawm fiber ntau optical, raws li thaum ntxov xyoo 2018, Facebook thiab Google thawj koom ruam ntawm txoj hauv kev los nce tus naj npawb ntawm cov fibers optical hauv cable.
Piv txwv li, Dunant cable, uas Google muab tso rau hauv kev siv thaum Lub Ib Hlis, muaj 12 khub ntawm fibers nrog tag nrho cov peev txheej ntawm 250 Tbit / s. Thiab nws ob lub network nyob rau hauv kev tsim kho nyob rau hauv lub Atlantic tau siv 16 khub ntawm optical fibers, uas yuav tsum tau ua kom tiav ib tug tag nrho cov peev xwm ntawm 350 rau 370 Tbit / s.
Thiab tsis ntev los no, nyob rau nruab nrab Lub Kaum Hli, Facebook tau txib NEC los tsim lub ntiaj teb lub peev xwm siab tshaj plaws submarine cable -- ib qho tshiab transatlantic cable nrog 24 khub ntawm optical fibers uas, thaum ua tiav, yuav khiav lub ntiaj teb cov ntaub ntawv tsheb loj tshaj plaws {{ 4}} Ua tiav cov ntaub ntawv tag nrho hloov chaw muaj peev xwm ntawm 500 TB ib ob (kwv yees li 4000 Blu-duab tshav Disc cov ntaub ntawv) ntawm North America thiab Europe.
Tsis yog tib lub sijhawm, los ntawm Benjamin J. ntawm National Institute of Information and Communication Technology (NICT) hauv Tebchaws Meskas. Ib pab neeg tshawb fawb coj los ntawm Puttnam qhia tias lawv pab neeg tau siv {{0}} core optical fiber nrog ib txoj kab uas hla ntawm 0.125 mm los xa cov ntaub ntawv. Los ntawm kev sib koom ua ke ntawm ntau yam kev siv tshuab hluav taws xob, lub tshuab xa hluav taws xob tau tsim ua kom zoo dua WDM thev naus laus zis, tsim kom muaj kev sib kis los ntawm cov txheej txheem cladding. Kev kaw cov ntaub ntawv xa mus los ntawm txoj kab uas hla fiber ntau: 319 Tbit / s cov ntaub ntawv tus nqi kis tau tus mob los ntawm ib lub channel tau ua tiav dhau qhov kev ncua mus txog 3001 km.
Ntau daim ntawv thov raug tshaj tawm ib tom qab.
Multi-core fiber core-rau-core converters qhib daim ntawv thov tshiab muaj peev xwm
Piv nrog rau ib txwm ib leeg-core fibers, ntau cores nyob rau hauv ib tug multicore fiber (MCF) qhia tib cladding. Qhov no high-density, multi-channel qauv muaj qhov zoo ntawm cov nqi qis, txuag chaw, thiab muaj peev xwm kis tau tus mob. Yog li ntawd, ntau cov tub ntxhais fibers muaj qhov tseem ceeb heev ntawm daim ntawv thov nyob rau hauv qhov chaw faib multiplexing optical kev sib txuas lus, cov ntaub ntawv chaw sib txuas, inter-chip kev sib txuas lus, tiam tom ntej fiber ntau amplifiers, optical sensing, thiab quantum technology.
Kev tshawb fawb txog kev siv tshuab fiber ntau tshiab yog ib qho tseem ceeb ntawm kev tshawb fawb los daws qhov teeb meem ntawm kev nthuav dav kev sib txuas lus yav tom ntej.
Txawm li cas los xij, txog rau tam sim no, tseem tsis tau muaj kev sib koom ua ke rau kev tsim cov khoom siv fiber ntau hauv ntiaj teb. Thaum tsim multi-core optical fibers, high-tech tuam txhab uas muag muaj ntau yam xws li cov xov tooj ntawm cores, cores, cores loj, core spacing, refractive index faib, thiab lwm yam. -core fibers nyuaj dua.
Piv txwv li, FiberHome Fujikura Optic Technology Co. Ltd thiab lwm lub tuam txhab yuav tsum tau splicing dissimilar multi-core fibers los tsim ib tug ntev-ntev multi-core fiber kis tau tus mob. Kev txwv ntau cov tub ntxhais fiber ntau kiv cua-hauv thiab kiv cua-tawm cov khoom siv yuav tsis sib xws rau cov tub ntxhais fiber ntau siv hauv kev sib kis.
"Tsawg-tsawg optical fiber ntau fusion splicing thev naus laus zis yog lub hauv paus ntawm cov khoom siv kho qhov muag fiber ntau thiab cov tshuab. Hauv kev tshawb fawb kev kawm, tsuas yog kev nce qib ntawm fusion splicing ntawm tib hom multi-core optical fiber ntau tau tshaj tawm, tab sis cov txheej txheem kev tsis sib haum ntawm fusion splicing. Muaj ntau cov kev tshawb fawb txawv teb chaws, qee cov neeg txawm xav tias qhov sib txawv ntawm cov tub ntxhais fiber ntau yuav luag tsis yooj yim, uas cuam tshuam rau daim ntawv thov dav hauv daim teb no. " Xiao Limin hais.
Tsim kom muaj cov tub ntxhais loj fiber ntau ntau cov channel multiplexing system thiab splicing dissimilar hom, tshwj xeeb tshaj yog cov tub ntxhais fibers nrog cov tub ntxhais sib txawv, yog ib qho kev daws teeb meem uas tsis muaj kev cuam tshuam rau cov teeb meem tam sim no.
Txhawm rau kov yeej cov teeb meem kev lag luam no los ntawm kev txhim kho ntau cov tub ntxhais kho qhov muag fiber ntau, Xiao Limin cov kev tshawb fawb pab pawg los ntawm Tsev Kawm Ntawv ntawm Cov Ntaub Ntawv Kev Tshawb Fawb thiab Engineering, Fudan University thaum kawg tau ua qhov tshiab thoob ntiaj teb kev ua tiav hauv ntau cov tub ntxhais kho qhov muag fiber ntau fusion technology. tom qab mob siab rau kev tshawb fawb. Multi-core fiber core spacing converter nrog kev ua tau zoo heev paub txog qhov qis-tsawg thiab qis-crosstalk fusion splicing ntawm dissimilar multi-core fibers.
Xiao Limin cov kev tshawb fawb pab pawg tau npaj cov txheej txheem ntau cov tub ntxhais fiber ntau taper (Daim duab 2), suav nrog rau pem hauv ntej taper thiab rov qab taper cov tswv yim, ob qho tib si tuaj yeem siv los kho cov tub ntxhais fiber ntau qhov sib nrug thiab tswj cov yam ntxwv ntawm cov tub ntxhais sib txawv. fiber tib lub sijhawm.
Raws li cov tub ntxhais fiber ntau thim rov qab taper thev naus laus zis, los ntawm kev sib piv cov tub ntxhais qhov sib nrug thiab hom kab kab ntawm qhov sib txawv ntawm cov tub ntxhais sib txawv ntawm cov tub ntxhais fibers, Xiao Limin pawg tshawb fawb tuaj yeem npaj tau qhov tsawg-tsawg thiab qis-crosstalk cores rau ob hom multi-core fibers. nrog mismatched core spacings. Qhov sib txawv converter.
