1. Structure description Non metallicstrength member, loose tube stranded type, gel filled, with one ripcord and Polyethylene(PE) sheath, outer door optical fiber cable for telecommunication Technical characteristics: Selected high quality optical fiber ensure the optical fiber cable have excellent transmission properties The unique fiber excess length control method provides the cable with excellent mechanical and environmental properties Very strict material and manufacturing control guarantees the cable can work stably for more than 30 years. Special jelly filled in the loose tube provides the fibers with critical protection Total cross-section water-resistant structure makes cable have excellent properties of moisture resistance The central member adopted high young's modulus FRP rod member. The cable use all dielectric non-mental structure, light in weight, easily to lay, excellent anti-electric-magnetic properties,Suitable for environment with high electric field strength in the Power communication system and the area where frequent thunder happens