Yuav ua li cas cov kws kho qhov muag fiber ua?
Kev tsim cov khoom siv hluav taws xob feem ntau tau muab faib ua peb txheej txheem, uas yog kev teeb duab fiber ntau, kuaj thiab npaj ua ntej.
Kev npaj ua ntej:
Muaj ntau txheej txheem thev naus laus zis rau kev tsim khoom ua ntej, feem ntau suav nrog MCVD, OVD, VAD thiab PCVD, ntawm qhov feem ntau siv yog txheej txheem MCVD, uas tseem yog qhov tseem ceeb ntawm kab lus no. Lub npe tag nrho ntawm MCVD ua lus Askiv tau hloov kho cov tshuaj vapor tso. Qhov txheej txheem fiber ntau ua ntej tsim cov txheej txheem tau tsim los ntawm Bell Labs hauv xyoo 1974. Cov roj sib xyaw ua ke ntawm SiCl4 (silicon chloride), GeCl4 (germanium chloride) thiab lwm yam tshuaj lom neeg tau nkag mus rau hauv cov iav iav raj (cladding), thiab cov raj quartz yog tig thiab ua kom sov, thiab cov silicon thiab germanium tau oxidized los ua SiO2 (Silica) thiab GeO2 (germanium dioxide) ua rau nws nyob hauv lub raj quartz kom tsim tau ib feem tseem ceeb ntawm cov kho qhov muag fiber.
Ib qho ntxiv, cov ntsuas xws li qhov ntsuas qhov cuam tshuam, nthuav dav coefficient, thiab cov ntsiab lus melting ntawm cov fiber ntau kuj tseem tuaj yeem tswj tau los ntawm cov khoom sib xyaw ntawm cov roj sib tov. Tom qab preform nyob hauv lub xeev txias, nws qhov zoo yuav tsum tau sim.
Cov duab kos duab:
Muab lub preform rau hauv ntau lub teeb duab ntauwd rau kev kos duab. Kev npaj ua ntej tom qab kos duab yuav dhau los ua 125μm tuab thiab nyias fiber ntau, thiab tau coated nrog ob txheej ntawm cov tshuaj los tiv thaiv lub zog ntawm cov fiber ntau kho qhov muag. Cov qauv ntawm cov duab kos ntau ntau suav nrog lub tshuab ua hluav taws xob graphite, uas tuaj yeem tsim kom muaj qhov kub siab ntawm 1700-2000 degrees, ua kom tiav cov txheej txheem ua ntej, thiab cua nws los ntawm lub log duab los ua kom muaj cov iav fiber ntau dua.
Cov pej thuam teeb duab tuaj yeem pub rov qab rau cua sov thiab cua nrawm, thiab tswj kom raug ntawm txoj kab uas hla ntawm lub fiber los ntawm lub tshuab laser micrometer. Txhawm rau txhawm rau txhim kho lub zog ntawm cov fiber ntau kho qhov muag, cov txheej txheem kev kos duab yuav tsum tau txheej txheej fiber ntau nrog cov txheej txheej ntawm cov yas nyob rau lub sijhawm thiab kom qhuav kom tsis txhob muaj kev sib koom ua ke.
Xeem:
Tom qab kos duab, nws yog qhov tseem ceeb los tshuaj xyuas cov fiber ntau. Kev ntsuas tsis suav nrog lub zog tensile, qhov ntsuas pom tsis tau zoo, cov qauv fiber, txo qis, cov ntaub ntawv nqa lub peev xwm (bandwidth), kev sib faib, kev ua haujlwm kub thiab av noo ntau, thiab lwm yam.
