What is the main purpose of buffer tubes in fiber-optic cable?

The main purpose of buffer tubes in fiber-optic cable is to protect and separate optical fibers. Buffer tubes serve as a critical component within the structure of fiber-optic cables, providing mechanical protection to the delicate optical fibers they encase. These tubes help to isolate individual fibers from each other, minimizing the risk of damage due to tension, bending, and environmental factors.

The separation provided by buffer tubes also aids in managing stress and strain on the fibers, which is essential for maintaining signal integrity over long distances. In addition to physical protection, buffer tubes contribute to the organization of multiple fibers within a single cable, allowing for easier installation and management of the fiber network.

While other aspects of fiber-optic cable design may contribute to its overall functionality or appearance, the protective and organizational role of the buffer tubes is fundamentally important in ensuring reliable performance and longevity of the fiber-optic system.