As can be seen in this representation of optical fiber, below the title: "TECHNOLOGY BASED ON LIGHT" will consider this technology and its connection with the world.
Social networking, phone calls low-cost video calls with family and friends. Three examples of many representatives of the internet, derived from the light and empowering communication between people and the rest of the world. The speed of the Internet has increased throughout history, substantially with the discovery of optical fiber. Then, and what is it?
The optical fiber is a transparent and very thin wire with a diameter of 0.5 mm, similar to a hair, which replaced the metal cables. This has cylindrical structure and is divided into two parts, core and coating, where the core is the central region and the shell is the region that surrounds the core on its outside.
The refractive index of the core material is more refractile (causes larger deviation of light) than the coating, such that a ray that enters at one end, with an angle greater than the critical angle, moves the core fiber undergoing total reflections on the walls until you reach the other end.
The fiber optic cables are advantageous compared to metal cables:
Abundant raw materials;
Greater information transmission capacity;
Does not suffer from electromagnetic wave interference;
As the wires are made of polymers, they do not corrode and will not rust as metallic wire;
Small size and weight.
The official website of the International Year of Light published an article dedicated to the importance of the link between light and communication! Just enter the following link:
http://goo.gl/80y0wn