1. The passband of optical fiber is very wide, and theoretically it can reach 3 billion megahertz.

2. The non-relay mode segment is long, from ten to more than one hundred kilometers, and the copper wire can only be several hundred meters.

3. It will not be disturbed by electromagnetic fields and electromagnetic wave radiation.

4. Light weight, small volume, low cost, large communication network capacity and strong communication network function. For example: 900 pairs of twisted-pair cables with 21,000 voice channels, the diameter is 3 inches, and the total weight is 8 tons/KM. The optical cable with 10 times the communication volume has a diameter of 0.5 inches and a total weight of 450P/KM.

5. Optical fiber communication is not energized, it is safe and reliable to use and can be used in flammable and violent places.

6, the use of a wide range of ambient temperature.

7. Chemical corrosion, long service life.

That is: a cable produced by an optical fiber (optical transmission carrier) through a corresponding process. In view of many key factors, it is only used for communication network transmission between long distance and point-to-point (that is, two switch rooms) at this stage. Recommended reading: How much is a meter of optical cable