Optical cable is manufactured to meet optical, mechanical or environmental performance specifications. It is a communication cable assembly that uses one or more optical fibers placed in a coated sheath as a transmission medium and can be used individually or in groups. Optical cable is mainly made of optical fiber (fine as the hair of the glass) and plastic protective sleeve and plastic skin, optical cable without gold, silver, copper and aluminum and other metals, generally no recycling value. Optical cable is a kind of communication line which consists of a certain number of optical fibers in a certain way, and is covered with a sheath, and some are also covered with an outer sheath, so as to realize the transmission of optical signals.