What is Outdoor Direct Buried Optical Fiber Cable Definition Direct buried optical fiber cable is a communication optical cable laying method. This kind of optical cable has steel tape or steel wire armor on the outside, and is directly buried in the ground. It requires the performance of resisting external mechanical damage and the performance of preventing soil corrosion. Direct buried optical fiber cable GYTA53 Structure Normally there are two or more layers of jacket structure to protect the cable core. The center uses metal or non-metallic reinforcement members, among which non-metallic reinforcement members are suitable for heavy mine areas....