Fiber Optics

For sending information from one place to another, a traditional method has been to use the radio waves (or microwaves) as a carrier. The discovery of laser in 1960 brought a big revolution in the field of telecommunication, as the laser is monochromatic and coherent source of light waves. The frequency of a laser wave is about \(10^5\) times larger than that of a radio wave. (The wavelength of a laser wave is about \(10^5\) times smaller than that of a radio wave.) Hence, with the help of the laser waves, about \(10^5\) times more information can be carried out as compared to that with the help of the radio waves.