Fiber, lub npe tag nrho ntawm optical fiber, yog ib hom ntshiab iav fiber ntau ua los ntawm iav los yog yas, thiab nws kuj yog ib lub teeb kis tau tus mob uas siv lub hauv paus ntsiab lus ntawm tag nrho cov sab hauv xav kom xa lub teeb nyob rau hauv cov fibers. Thawj qhov fiber ntau hauv ntiaj teb tau tsim los ntawm Gao Kun, leej txiv ntawm optical fiber.
Optical fiber ntau yog tsim los ntawm cov tub ntxhais fiber ntau thiab cladding, uas yog concentric iav cylinders. Lub refractive index n1 ntawm fiber core yog me ntsis siab dua qhov refractive index n2 ntawm cladding. Thaum lub teeb tsis muaj teeb meem los ntawm lub ntsej muag kawg ntawm optical fiber ntau ntawm lub kaum sab xis me me, lawv yuav tag nrho los yog ib feem ntawm qhov cuam tshuam ntawm cov tub ntxhais fiber ntau thiab cladding, thiab tom qab ntawd xav txog ntawm lwm qhov sib cuam tshuam. Xws li rov xav txog ua rau cov teeb liab kho qhov muag nthuav tawm rau pem hauv ntej. Nws muab faib ua SiO2optical fiber ntau iav fiber ntau optical fiber, yas-clad SiO2core optical fiber thiab tag nrho cov yas kho qhov muag fiber ntau raws li cov ntaub ntawv, thiab qib kho qhov muag fiber ntau thiab qib kho qhov muag fiber ntau raws li cov qauv kho qhov muag. Lub hauv paus ntsiab lus yog tias cov khoom xa tawm ntawm ib kawg ntawm cov khoom siv kho qhov muag siv lub teeb emitting diode los yog laser xa lub teeb pulses mus rau hauv cov khoom siv kho qhov muag, thiab cov khoom tau txais ntawm qhov kawg ntawm qhov kho qhov muag fiber ntau siv cov photosensitive tivthaiv los xyuas cov mem tes.
Feem ntau cov fiber ntau optical cores yog iav fibers, thiab feem ntau cov hlau cores ntawm network cables yog ua los ntawm tooj liab cores. Hauv kev sib kis mus ntev, qhov kev sib kis ntawm ib hom kev kho qhov muag fiber ntau tuaj yeem ncav cuag 10-20kM, thiab ntawm ntau hom kev kho qhov muag fiber ntau tuaj yeem xa tau 2-3KM, uas siab dua li ntawm lub network. kab. Network cable feem ntau yog siv rau kev sib txuas ntawm cov khoom siv, thiab optical fiber ntau yog siv rau kev sib txuas lus broadband.