Despite the significant advantages of fiber optics, such as higher transmission rates, larger bandwidth, and longer transmission distances, in many practical applications, network cables (especially twisted pair cables such as CAT5e, CAT6, CAT6A, CAT7, CAT8, etc.) have not been completely replaced by fiber optics for the following reasons:
- Cost considerations: The price of fiber optic related supporting equipment (such as fiber optic transceivers, routers for optical ports, and network cards) is slightly higher than that of copper network equipment. In home and small and medium-sized enterprise environments, users often pay more attention to cost-effectiveness, while traditional Ethernet cables and their accessories are easy to purchase and replace.
- Installation and maintenance convenience: Copper cables are easier to wire and maintain, they can be bent freely, and simple connections and troubleshooting can be carried out without special professional skills. In contrast, fiber optic cabling requires professional fusion splicing tools and techniques, and once damaged, the cost and complexity of repair are higher.
- Power transmission: Copper cables can not only transmit data, but also provide power to connected devices through PoE (Power over Ethernet) technology, which fiber optics cannot achieve. For wireless access points, IP phones, security cameras, and other devices that rely on PoE power supply, Ethernet cables are still the preferred solution.
- Existing infrastructure: Many existing buildings and households have pre installed twisted pair cabling systems, and reconfiguring fiber optic networks means high renovation costs and time costs.
- Short term demand satisfaction: For most household users and small commercial networks, existing copper wire technology (such as the latest CAT8 network cable) can already provide fast and stable network connections to meet daily needs.
- Hybrid solution: In practical applications, it is often a combination of fiber optic and copper cables. Fiber optic is used for backbone networks or long-distance transmission, while copper cables are used for indoor and end-user last mile connections.
In summary, although fiber optic provides better performance in many cases, copper cables still play an irreplaceable role in the overall network architecture due to their economy, ease of use, and functionality, especially at the short distance and end-user access levels