1. The passband of optical fiber is very wide, theoretically up to 30T.
2. No relay support length can reach tens to hundreds of kilometers, copper wire is only a few hundred meters.
3. Not affected by electromagnetic field and electromagnetic radiation.
4. Light weight and small size.
5. Fiber optic communication is not electrically charged, safe for use in flammable, volatile and other places.
6. Wide range of ambient temperature.
7. Long service life.
