Lub cev tsis muaj zog ntawm lub zog kho qhov muag yuav sib txawv raws li ntau tus yam, thiab hauv qab no yog qee qhov tseem ceeb siv:
•Hom Fiber:Ntau hom fiber ntau muaj cov yam ntxwv tsis sib txawv. Piv txwv li, qhov ploj ntawm dog dig ib-hom fiber ntawm 131 {}}}}}}}}}. 25db / km. Lub ploj ntawm multimode fiber ntau yog qhov loj, qhov poob ntawm 850nm wavelength yuav hais txog {10 8-1. 5db / km.
• Hom kev txuas:Optic kev sib txuas cov ntsiab lus txuas ntxiv cov kev txo qis. Qhov ploj ntawm cov kev sib txuas (xws li fiber ntau qhov txuas tau) feem ntau nyob ib ncig ntawm {{{}}}. 5db ib qho kev sib txuas; Qhov poob ntawm kev sib txuas vuam yog qhov me me, thiab poob ntawm txhua qhov chaw vuam yog feem ntau txog 0. {}}. 1db.
• Kev nrug deb:Feem ntau, ntev dua qhov kev sib kis ntev dua, muaj ntau dua qhov kho hluav taws xob. Hauv kev sib txuas lus fiber ntau, rau kev ncua luv luv kis (xws li luv luv luv (xws li nyob rau ob peb kis lus mev), tag nrho cov khoom poob qis yuav nyob hauv ob peb lub decibels; Rau kev sib kis ntev ntev (xws li kaum tawm ntawm kilometers lossis ntau pua ntawm kilometers), tag nrho cov poob yuav mus txog kaum kaum hli lossis siab dua.
GPPon Onu feem ntau yog chav kawm B +, siv ib hom fiber ntau, nws tau txais kev paub txog qhov siab tshaj {2}} dbb yog ruaj khov
