Most manufacturers will place additional insulation jackets around the strands to protect the cables from breaking. Sometimes, they are placed in flexible metallic tubes to further. How easy it might be to break a fiber optic cable depends on its protection level. It is true that each fiber is very fragile. With CommMesh's advanced tools and solutions, you'll learn how to restore networks seamlessly. Let's explore the process and see why CommMesh. Fiber-optic cables are the backbone of modern connectivity—powering 5G networks, global internet backbones, and data center interconnections with near-light-speed data transmission. These cables are made of thin strands of glass or plastic fibers that transmit light signals, enabling the rapid transfer of information.