The basic objective of this article is to know about fiber optics. Fiber optic technology is nothing latest, but latest applications of this technology are probable to modify the method we live and work. For numerous decades fiber optic technology, transmitting light via elastic fibers of incredibly thin glass or other transparent materials, has been accessible. However the expenditure of this technology was measured too exclusive for anything other than long-distance applications such as telecommunications. The important benefits over customary copper wiring were what made the supplementary cost worthwhile.