An HDMI over fiber extender uses a fiber-optic cable to extend the connection between devices. After reading this. When it comes to transmitting audio and visual signals, there are two prominent options available in the market: fiber optic cables and HDMI cables. In this article, we'll dive into the details of fiber. Fiber optic HDMI cables, considered essential by many globally, consist of tiny bundles of optical fibers under a protective insulated layer. If you. Modern HDMI cables carry an immense amount of data, which can be a real challenge to transmit over copper wires—so why not ditch them? That's exactly what you get with fiber-optic HDMI cables, which are a solution you probably didn't know you needed.