Fiber optic cables are essential components in modern data transmission infrastructure. They support high-speed, interference-resistant communication and are particularly effective in applications that require high bandwidth, low latency, and strong signal integrity. Another type of fiber coil, made of rare-earth doped fiber, is used for a relatively uncommon type of fiber lasers, called side-pumped fiber disk lasers. An optical link is naturally immune to electromagnetic interaction, and thus has the great advantage of removing crosstalk between. Fiber coiling is a technology as well as an art. Excessive bending angles will damage or even break the optical fibers, causing communication. Unlike copper cables—where voltage, current, and conductor size feel intuitive—optical cables operate on light, not electricity.