Transmission through Optical Fiber

Optical fiber consists of a bundle of glass threads, just thin like a human hair that carries digital information over long distances. These optical fibers are used extensively for data transmission system because of their greater efficiency and large carrying capacity such as telephone communication, cable television, space vehicles in web browsing, email exchange and medical field also. Based on the principle of Total Internal reflection (TIR) optical fiber transmits information in the form of light pulses. A powerful aspect of an optical communication link is that many different wavelengths can be sent along a fiber simultaneously and the technology of combining a number of wavelengths onto the same fiber is known as wavelength division multiplexing (WDM). This concept is used in conjunction with optical amplifiers in communication links that allow rapid communication between users in countries all over the world. Hence this document includes information regarding how optical fiber transmits data from longer distance through different types of modes.