Bandwidth txhais tau tias yog rab peev xwm los nqa cov ntaub ntawv. Lub hauv paus tseem ceeb uas cuam tshuam qhov dav ntawm optical fiber kis tau tus mob yog ntau yam kev tawg, ntawm qhov twg modal dispersion yog qhov tseem ceeb tshaj plaws. Kev tawg ntawm ib hom fiber ntau kuj me me, yog li nws tuaj yeem xa lub teeb rau hauv qhov dav dav dav rau qhov ntev. Vim tias cov hom fiber ntau ua rau cov teeb meem nyuaj xws li kev cuam tshuam thiab cuam tshuam, lawv tsis zoo li tib hom cov fibers nyob rau hauv cov lus ntawm bandwidth thiab lub peev xwm. Kev siv bandwidth ntawm lub sijhawm tam sim no ntawm ntau hom fiber ntau OM5 tau teeb tsa rau 28000MHz / km, thaum lub bandwidth ntawm ib hom fiber ntau tau loj dua.

