What kind of equipment is laser laser and what is it for? Please expert pointing
To do this, scientists have developed a thin wire that transmits light, called an optical fiber, or fiber. Fiber is made of special glass material, diameter is thinner than human hair, usually 50~150 microns, and very soft. In fact, the inner core of the optical fiber is transparent optical glass with high refractive index, while the outer layer is made of glass or plastic with low refractive index.
So how do you pass the laser? We know that electricity can travel along a copper wire, but it can't travel along an ordinary wire.
But all this way of transmitting information with ordinary light can only be limited to short distances. To transmit information directly through light to distant places, it is impossible to use ordinary light instead of lasers.
Light transfer information for laser communications is very common today. For example, with communication signals of ship, red, yellow and green traffic lights scheduling.
