The structure of this fiber optic cable includes a choice of either single mode or multi mode fiber, which refers to the type of optical fiber used for transmission. The cable is protected by an outer sheath made of polyethylene (PE), medium-density polyethylene (MDPE), or high-density polyethylene (HDPE). The cable is typically packaged in lengths of 2-4 kilometers per drum for easy transport and installation. The fiber optic cable is designed for installation either directly buried or in a duct, and is equipped with a fiberglass reinforced plastic (FRP) strength member to provide additional strength and durability. The loose tube is made of polybutylene terephthalate (PBT) and has a high strength that is resistant to hydrolysis. A special tube filling compound is used to provide critical protection for the fiber, and the cable has both crush resistance and flexibility. The central strength member of the cable is made of single fiber reinforced plastic, which provides added stability and support for the cable. To ensure the highest level of protection for the fiber, the loose tube is filled with a tube filling compound, and the cable core is 100% filled to prevent any gaps or voids. The cable is further protected by a PSP (Polyethylene terephthalate) strengthening tape that enhances moisture-proof properties, as well as a water-blocking material to prevent any water damage. Overall, this fiber optic cable is designed to provide excellent mechanical and temperature performance, with a high level of crush resistance and flexibility, making it ideal for use in a variety of applications. Its high strength loose tube and advanced filling compounds ensure the fiber is well protected, while its central strength member provides additional support and stability.