Kev ua haujlwm wavelengths ntawm ob chav kho qhov muag tau txawv, qhov ua haujlwm wavelength ntawm ntau hom optical module yog 850 nm, thiab qhov ua haujlwm wavelength ntawm ib hom kho qhov muag tau siv yog 1310 nm lossis 1550 nm. Los ntawm tus nqi ntawm kev pom, tib hom kev siv kho qhov muag siv cov cuab yeej siv ob zaug ntau dua li cov cuab yeej siv kho qhov muag tau siv ntau dua, thiab tus nqi tag nrho yog ntau dua li ntawm ntau hom kho qhov muag. Txawm li cas los xij, kev sib kis tau deb ntawm ib-hom kho qhov muag module kuj tseem ntev dua li ntawm ntau hom kho qhov muag tau siv. Qhov nrug deb deb ntawm kis kho qhov muag ntawm lub teeb hluav taws xob yog 100km, thiab deb tshaj kev xa mus deb ntawm cov hom kho qhov muag dav dav yog 2km.
