Chapter 8: FIBER OPTIC COMMUNICATIONS EXAM WELL SOLVED

Chapter 8: FIBER OPTIC COMMUNICATIONS EXAM WELL SOLVED Fiber Optics ANS-It is the science, study, or technology dealing with light transmission. Optical Fiber ANS-It is the medium, channel or path where light signals travel. Alexander Graham Bell ANS-In 1880 he experimented the transmission of sound waves over a beam of light using a device known as photophone. John Baird and Clarence Hansell ANS-They were granted patents for scanning and transmitting television images through uncoated fiber cables. Heinrich Lamm ANS-A German scientist successfully transmitted images through a single glass fiber. Abraham van Heel, Harold Hopkins, Narinder Singh Kapany ANS-In 1950s they experimented with light transmission through bundles of fibers. Their study led to the development of flexible fiberscope. Narinder Singh Kapany ANS-He coined the term fiber optics in 1956. He was from England who was regarded as the father of fiber optics. Charles Townes & Arthur Schawlow ANS-They wrote a paper describing how it was possible to use stimulated emission of light waves as well as microwaves. Theodore Maiman ANS-He built the first optical maser in late 50s. George Bockham and Charles Kuen Kao ANS-They proposed a new communication medium using cladded fiber cables. Kapron, Keck, & Maurer ANS-They are from Corning Glass Works in Corning, New York who developed an optical fiber with losses less than 2 dB/km. Core ANS-It is the internal material of the fiber, specifically the central part of the fiber where the light propagates