Fiber optic cables offer faster speeds, longer transmission distances, better signal quality, and higher security than traditional copper cables, making them ideal for high-speed, data-intensive networks. They're renowned for their high-speed data transfer rates and impeccable digital audio, making them a staple in both residential and professional environments. AmazonBasics Digital Optical Audio Cable 2. While copper cables have a lower initial cost, fiber is more cost-effective in the long run. Fiber optic cables are a type of cable that consists of thin strands of glass or plastic fibers that are used to transmit digital data over long distances.