Fiber optic cable splicing is essential for creating a seamless data transmission path by joining two fiber optic cables together. Fiber optic cables are critical telecommunications facilities. This article will introduce fiber optic cable splicing and how to splice fiber. The process of optical communication breaks down into a few simple steps: E/O converters use light-emitting elements such as semiconductor lasers, O/E converters use light-receiving elements such as photodiodes, and optical elements such as lenses are used at the input and output of optical fiber. Fiber splicing means joining two optical fibers (permanently or temporarily) such that light guided in one fiber and reaching the joint (splice) can be transferred into the second fiber with low insertion loss. They may be used to convey voice, video and data.