Q: Tam sim no, puas yog ib hom kev kho qhov muag fiber ntau tseem yog daim ntawv thov tseem ceeb ntawm kev xa khoom fiber ntau?
A: Yog, multi-core optical fiber ntau yog ib qho kev txiav txim siab, thiab muaj qee qhov kev siv cuam tshuam rau tam sim no, uas tseem tsis tau muaj lub ntsiab lus tseem ceeb, tab sis yuav ua tau nyob rau tiam tom ntej.
Cov saum toj no yog qhov luv luv ntawm OFweek optical kev sib txuas lus thiab Mr. 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 kho qhov muag.
Tsis ntev los no, Xiao Limin pawg tshawb fawb los ntawm Lub Tsev Kawm Ntawv ntawm Cov Ntaub Ntawv 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 splicing thev naus laus zis-npaj ntau qhov chaw kho qhov muag fiber ntau core spacing converter nrog kev ua tau zoo, thiab pom tau hais tias heterogeneous multi-core optical fiber ntau thawj zaug hauv ntiaj teb. Splicing nrog tsawg poob thiab tsawg crosstalk. Veken Optical Communications xa lus zoo siab.
Txoj kev loj hlob tsis pom kev ntawm kev sib txuas lus optical fiber ntau
Tam sim no, nrog rau kev loj hlob ntawm huab xam, kev ua yeeb yaj kiab siab, Internet ntawm Yam, thiab 5G kev sib txuas lus, lub ntiaj teb network tsheb tau nce ntau. Txawm li cas los xij, ib leeg-ntxhais ib leeg-hom optical fiber ntau kis tau tus mob yog txwv los ntawm Shannon txwv. Nyob rau hauv ob peb xyoos tom ntej no, qhov kev tsis sib haum xeeb ntawm kev loj hlob qeeb ntawm optical tes hauj lwm thiab qhov kev thov rau siab bandwidth nyob rau hauv kev ua lag luam yuav dhau los ua mob hnyav, thiab nws yuav dhau los ua ib qho teeb meem tseem ceeb uas yuav tsum tau daws sai sai hauv kev lag luam kho qhov muag.
Yuav kom daws tau qhov teeb meem ntawm optical kev sib txuas lus nthuav dav nyob rau hauv lub neej yav tom ntej, kev lag luam-pom zoo kev daws teeb meem kom nce ib leeg-fiber muaj peev xwm yog siv qhov chaw division multiplexing technology. Multi-core optical fiber, multi-mode optical fiber lossis multi-core multi-mode optical fiber yog qhov kev txhim kho tsis pom kev ntawm kev sib txuas lus fiber ntau.
Kev tawg hauv qhov chaw faib multiplexing optical fiber ntau tshuab: seamless optical interconnection ntawm ntau hom multi-core optical fibers
daim duab 1. Txoj Kev Txhim Kho Kev Muaj Peev Xwm ntawm Ib Leeg Fiber Transmission System
Ntau tus tub ntxhais kho qhov muag fiber ntau tuaj yeem ua kom muaj zog ua tau zoo tshaj plaws ntawm cov khoom siv kho qhov muag, thiab tau ua tiav los ntawm Is Taws Nem txawv txawv teb chaws.
Txhawm rau txeeb kev lag luam kev sib txuas lus thiab nthuav dav kev sib kis ntau zaus ntawm cov fibers optical fibers, thaum ntxov li 2018, Facebook thiab Google thawj koom ruam ntawm txoj hauv kev los nce tus naj npawb ntawm cov fibers optical hauv cables.
Piv txwv li, Dunant cable uas Google muab tso rau hauv lub Ib Hlis Ntuj muaj 12 khub ntawm optical fibers nrog tag nrho cov peev xwm ntawm 250 Tbit / s. Ob lub tes hauj lwm nyob rau hauv kev tsim kho nyob rau hauv dej hiav txwv Atlantic txawm siv 16 khub ntawm optical fibers, thiab yuav tsum ua kom tiav lub peev xwm ntawm 350 txog 370 Tbit / s.
Thiab tsis ntev los no, thaum Lub Kaum Hli, Facebook tau txib NEC los tsim lub ntiaj teb lub peev xwm siab tshaj plaws submarine cable - lub transatlantic cable tshiab, uas siv 24 khub ntawm optical fibers. Tom qab ua tiav, nws yuav nyob rau hauv lub ntiaj teb cov ntaub ntawv loj tshaj txoj kev loj - Ua tiav cov ntaub ntawv tag nrho cov peev txheej hloov ntawm 500 TB ib ob (kwv yees li 4,000 Blu-duab tshav Disc cov ntaub ntawv) ntawm North America thiab Europe.
Nyob ib ncig ntawm tib lub sijhawm, los ntawm Benjamin J. Ib pab neeg tshawb fawb coj los ntawm Puttnam tau tshaj tawm tias nws pab pawg 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 ntau yam kev siv tshuab hluav taws xob, lawv tsim cov kab ke sib kis uas tau txais txiaj ntsig ntawm WDM thev naus laus zis thiab tsim Cov ntaub ntawv kaw lus ntawm txoj kab uas hla optical fiber ntau kis tau tus mob: Tso cai rau txhua tus channel kom ua tiav qhov kev sib kis ntawm 319 Tbit / s cov ntaub ntawv tus nqi nyob ntawm qhov deb txog li 3001 kilometers. .
Ntau daim ntawv thov kuj raug tshaj tawm.
Multi-fiber core pitch converter qhib daim ntawv thov tshiab muaj peev xwm
Muab piv nrog cov tsoos ib leeg-ntxhais kho qhov muag fiber ntau, ntau lub cores hauv Multicore fiber (MCF) sib koom tib lub 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 siab. , Yog li ntawd, multi-core optical fiber ntau muaj qhov tseem ceeb heev daim ntawv thov nyob rau hauv qhov chaw faib multiplexing optical kev sib txuas lus system, cov ntaub ntawv chaw txuas, nti-rau-chip kev sib txuas lus, tiam tom ntej optical fiber amplifier, kho qhov muag sensing, quantum technology, thiab lwm yam.
Kev tshawb fawb txog kev siv technology tshiab multi-core optical fiber ntau yog ib qho ntawm cov kev tshawb fawb tsom los daws qhov teeb meem ntawm kev sib txuas lus yav tom ntej.
Txawm li cas los xij, txog rau tam sim no, tseem tsis tau muaj tus qauv zoo ib yam rau kev tsim cov khoom siv fiber ntau hauv ntiaj teb. Thaum tsim ntau cov tub ntxhais kho qhov muag fibers, ntau lub tuam txhab high-tech tau ua haujlwm zoo nyob rau hauv cov nqe lus ntawm cov cores, cores, core loj, core spacing, thiab refractive index faib. Txhua qhov sib txawv, uas ua rau muaj qhov nyuaj ntawm fusion splicing ntawm ntau hom multi-core fibers.
Piv txwv li, FiberHome Fujikura Optic Technology Co. Ltd thiab lwm lub tuam txhab yuav tsum tau splice dissimilar multi-core optical fibers los tsim ib tug ntev-nyob deb-txoj kev multi-core optical fiber kis tau tus mob. Txawm li cas los xij, txwv 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 fusion tshuab yog lub hauv paus ntawm cov khoom siv fiber ntau thiab cov tshuab. Hauv kev tshawb fawb kev kawm, tsuas yog kev nce qib ntawm tib hom multi-core optical fiber ntau fusion tau tshaj tawm, tab sis cov txheej txheem fwj ntawm ntau hom multi-core. Muaj kev tshawb fawb txawv teb chaws, cov kws tshawb fawb txawm xav tias fusion splicing ntawm ntau hom multi-core fibers yuav luag tsis yooj yim sua, uas cuam tshuam rau daim ntawv thov dav hauv daim teb no. " Xiao Limin hais.
Tsim kom muaj ib qho loj loj multi-core optical fiber ntau channel multiplexing system thiab splicing dissimilar fibers, tshwj xeeb tshaj yog multi-core optical fibers nrog sib txawv core spacings, yog ib tug unavoidable technical bottleneck 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 thev naus laus zis, Xiao Limin pawg tshawb fawb los ntawm Lub Tsev Kawm Ntawv ntawm Cov Ntaub Ntawv Kev Tshawb Fawb thiab Engineering ntawm 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. thev naus laus zis los ntawm kev mob siab rau kev tshawb fawb-npaj ntau yam Lub multi-core optical fiber core spacing converter nrog kev ua tau zoo heev paub txog kev poob qis thiab qis-crosstalk fusion splicing ntawm dissimilar multi-core optical fibers.
Xiao Limin cov kev tshawb fawb pab pawg tau npaj ntau cov tub ntxhais kho qhov muag fiber ntau tapering thev naus laus zis (Daim duab 2), suav nrog ob lub thev naus laus zis ntawm kev sib tw rau pem hauv ntej thiab rov qab tapering, ob qho tib si tuaj yeem siv los kho qhov kev ncua deb ntawm cov cores ntawm ntau cov tub ntxhais kho qhov muag fibers thiab ib txhij tswj cov hom yam ntxwv ntawm multi-core fibers.
Daim duab 2 Schematic daim duab ntawm ob hom multi-core optical fiber core spacing converters
Raws li cov thev naus laus zis ntawm ntau cov tub ntxhais kho qhov muag fiber ntau thim rov qab tapering, los ntawm kev sib piv cov tub ntxhais qhov sib nrug thiab hom teb kab ntawm heterogeneous multi-core optical fibers, Xiao Limin cov kev tshawb fawb pab pawg tuaj yeem npaj tau qis-tsawg, qis-crosstalk cores rau ob hom ntau -core optical fibers uas nws qhov sib nrug tsis sib xws. suab converter.
Rau ob lub tub ntxhais fiber ntau nrog cov qauv sib txawv thiab qhov sib txawv ntawm qhov sib txawv ntawm 26 μm (Daim duab 3 (a, b)), cov core-spacing converter npaj los ntawm Xiao Limin pawg tshawb fawb tuaj yeem ua tiav qhov poob qis li 0 .18 dB thiab crosstalk tsawg li -68 dB .
Rau ntau cov tub ntxhais fibers nrog tib qhov sib txuas thiab qhov sib txawv me ntsis ntawm cov tub ntxhais sib txawv (Fig. 3(b, c)), cov tub ntxhais-qhov sib nrug ntawm qhov hloov pauv poob qis li 0.17 dB thiab crosstalk yog tsawg li. -66 dB.
Kev tawg hauv qhov chaw faib multiplexing optical fiber ntau tshuab: seamless optical interconnection ntawm ntau hom multi-core optical fibers
Fig.3 Micrographs ntawm cov tub ntxhais kawg ntsej muag ntawm peb hom multi-core optical fibers
Kev npaj thev naus laus zis ntawm ntau cov tub ntxhais kho qhov muag fiber ntau lub suab hloov pauv tau thov los ntawm Xiao Limin pawg tshawb fawb tau zoo kawg nkaus daws cov teeb meem kev sib txawv ntawm ntau cov tub ntxhais kho qhov muag fiber ntau fusion hauv kev sib txuas lus kho qhov muag, muab qhov kev pom tshwj xeeb rau kev npaj ntawm ntau cov tub ntxhais kho qhov muag fiber ntau. , thiab yuav tso tawm ntau cov tub ntxhais kho qhov muag fiber ntau hauv kev siv tswv yim. Muaj peev xwm ntau dua hauv kev siv.
