optical fiber is a thin cylindrical fiber that is made of glass or plastic, as tiny as one tenth of human hair. The standard optical fiber in telecom comprises three layers that are counted from the inside out: fiber core (diameter 810um) and cladding (diameter of 125um) and buffer coating (diameter 9000um).Fiber core and cladding is composed of silica or glass. The fiber core and the Cladding layers are...