Direct buried fiber optic cable is designed for direct buried installation, buried directly underground without protection. Direct buried fiber optic cable usually with double sheath and Kevlar yarn for protection.This article can help you learn more about direct buried fiber optic cable. What is Direct Buried Fiber Optic Cable? Direct buried fiber optic cable is a type of fiber optic cable which is armored with a steel tape or steel wire outside. With the performance of resisting external mechanical damage and soil erosion, it can be buried directly into the ground in a trench or using a vibratory plow. Direct burial is the most convenient laying method for fiber optic cable and also saves duct and aerial installation costs. Generally speaking, direct buried cables provide good mechanical and temperature performance, crush resistance and flexibility for direct buried construction, convenient construction and installation,plastic coated aluminum tape (APL) moisture barrier, plastic-...