Since fiber optic cables are so fast, why are network cables more popular?

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Since fiber optic cables are so fast, why are network cables more popular?

If you see the problem, are you confused? I believe that many of you know that the bandwidth of optical fiber is larger than that of ordinary network cables, and it is also much faster than network cables in terms of network speed. Therefore, many people choose optical fiber to the home. However, although fiber to the home is not so popular in many home groups, most home networks think of network cables first. So the question is, why is this? Look down, Shengwei will take you to reveal the answer!

1. Cost issues

The first reason is very simple, the cost between optical fiber and network cable. Optical fiber sounds high, but it is not expensive. However, the optical fiber network is not only as simple as the intermediate connection requiring optical fiber, but more importantly, the optical fiber needs to be optical port cards. Even in today's well-developed network, the price of an optical interface card in a pure optical fiber network LAN is still much higher than that of an ordinary network card. Secondly, because home routers and home switches with optical ports are not popular, the essential equipment for home optical fiber networking is optical fiber transceivers. For fiber-to-the-desktop network, every device from fiber-to-the-home to desktop network needs to have fiber-optic ports. Optical modems, routers, and computer network cards all need to have fiber-optic ports. This way, the front-end hardware alone will not be able to keep up. up.

2. Optical fiber wiring is more complicated

In the process of cabling construction, due to space constraints, the cabling will inevitably encounter places that need to be bent and turned, and the big difference between optical fibers and network cables is that optical fibers cannot be bent at right angles. The reason is that on the one hand, it is necessary to avoid breaking the glass core in the optical fiber. On the other hand, although the optical fiber is an optical signal, the loss is less than that of the network cable. However, due to the right-angle bending, the light attenuation will be too large, so the transmission effect will also be affected. influences. Although there are some leather cables that have better bending resistance, the bending diameter is only smaller, and the requirements for fiber optic wiring are still much higher than that of network cables.

3. Optical fiber maintenance is inconvenient

Combined with what has been popularized above, network cables are generally copper twisted pairs, which can be pulled, stepped, bent, or folded without any problems, and they are very strong and durable. The difference is that the material of the optical fiber is glass filament, which is fragile and easy to break, and the welding needs to be completed by specialized technicians and machines after it is broken.

4. The network cable is easier to meet the needs of the public

At present, ordinary network cables are enough to meet everyone's needs. Take the current popular gigabit network as an example, it is enough to choose a six-category network cable (five types can also be satisfied~). The transmission frequency is 200-250MHz, and the transmission speed can reach 1000Mbps.