For fiber transmissions we still use both, #multimode and #singlemode #fiber cables. But why is that? In this #brainsnack video James F. Merchant takes a closer look as to why that is. 0:00 - Intro 0:15 - Core Diameter 0:38 - What is a Mode? 1:54 - Modal Dispersion 2:55 - Why we still use both types of fiber #wdm #transceiver #insidethecube