Yes, thicker optical cables are more flexible, with a higher tensile strength than copper or steel fibers, low power loss, and has a much greater bandwidth. Thicker Optical cables can transmit huge amount of information per unit time, and they offers the most security because. When it comes to optical cables, one of the most common misconceptions is that thicker cables are always better. While it's true that thicker cables can offer certain advantages, the relationship between cable thickness and performance is more complex than you might think. By the early 1990's, as the internet was becoming popular in the public realm, fiber optic cabling started to be laid around the world. Twisted pair cables use current to transfer data.