How To Splice Fiber Optic Cables Fiber optic cabling is the neural network of modern society, carrying everything from breaking news to that meme you liked on Instagram last night. It is what powers internal servers and modern Internet connections, resulting in faster speeds than ever. Thanks to fiber splicing, when fiber breaks, that endless flood of data does not need to stop. Before we can explain how to splice fiber optic cables, we need to establish what splicing is as well as the different methods. Continue reading to learn more.