The outer sheath of the optical fiber cable is divided into different material types., LSZH, Plenum, Riser . Cable sheathing is the outermost layer of a cable that protects it from physical damage, moisture, and chemical exposure. Unlike insulation, which covers each wire inside the cable to prevent electrical flow. What Is a Cable Sheath and Why It Matters 🔍 The cable sheath is the outer protective layer of a fiber optic cable. Its primary functions include: While the optical fiber itself remains largely unchanged, the sheath material determines how the cable behaves in fire scenarios, outdoor environments. Whether you are designing and manufacturing a new cable or simply choosing an existing one for data, power, fiber optics, or industrial automation, the outer sheath (jacket) is much more than just a speaking cover to the eye; it is, in fact, an important job holder in mechanical protection. Sheathing has three core values for use in fiber optic design: Protect the fiber. Keep ambient or stray light from creating signal noise (for sensor applications).
[PDF Version]