Optical fiber cable is mainly madeup of light-guide fiber(as thin as a hair), theprotective plastic casing and plastic sheath. Inside the cable, there is no Gold, silver, copper and  aluminum, generally no recoveryvalue. The fiber optic cableis a certain amount of optical fiber cable according to a certain heartoutsourcing jacket, and some coated layer of protection to an optical signaltransmission lines of communication. Namely: the cable by the fiber (opticaltransmission vector) formed after a certain process.

The cable is the main transfer tool fortoday's information society InformationNetwork. If the "Internet"called "information superhighway", Then, the fiber-optic network isthe cornerstone of the information highway - fiber-optic network is thephysical routing of the Internet. Once a cable is damaged and blocked in thedirection of the "information superhighway" will come to destruction.Through the optical transmission of information, information other than theaddition to the normal telephone, telegraph, fax, transmit large amounts oftelevision signals, bank transfer, stock market, a moment can not beinterrupted. At present, the transmission of long-distance telecommunicationcables by the PDH to SDH transmission rate by the original 140MB / S to 2.5GB /S, 4 x 2.5GB / S, 16 × 2.5GB / s or even higher, that is,said core one pair canbe opened 30 000 120 000 480 000 or to the development of more telephonechannels.  Such a large transmissioncapacity, fiber optic cable to block not only caused huge losses to thetelecommunications sector, but due to poor communication, will give the massesthe inconvenience. For example, a computer user can not access, the stockmarket can not be known, bank exchange can not be processed, people from otherplaces can not deposit and withdraw money, all kinds of information can not betransmitted. In remote mountainous areas, once the fiber optic cable isinterrupted, it will make the county and even fiber optic cable along theseveral counties in the communication on the isolation, to be an isolated island.Losses caused to the military authorities and the people is immeasurable.