What is the purpose of a fiber optic cable sheath?

The purpose of a fiber optic cable sheath is to protect the internal fibers from damage. The sheath serves as a protective barrier that safeguards the delicate glass or plastic fibers within the cable from physical threats such as abrasion, impact, moisture, and environmental factors. By preventing external elements from causing harm, the sheath ensures the integrity and performance of the fiber optic system.

While enhancing signal strength, providing electrical insulation, and increasing bandwidth capacity are important aspects of fiber optic technology, they are not the primary function of the cable sheath. Instead, the sheath focuses on physical protection, which is crucial for maintaining the reliable operation of fiber optic communications.