What is the primary purpose of using buffer tubes in fiber optic cables?

The primary purpose of using buffer tubes in fiber optic cables is to protect the fibers from physical damage and moisture. Buffer tubes serve as housing for the individual optical fibers, offering a protective layer that prevents crushing, bending, and other mechanical stress that could compromise the integrity of the fibers. Additionally, these tubes help keep the fibers dry by providing a moisture barrier, which is crucial since exposure to moisture can lead to signal degradation and performance issues in fiber optic systems.

While aspects like installation ease or aesthetics may be considered in cable design, they do not define the fundamental role of buffer tubes. The designs are primarily driven by the need for durability and reliability in fiber optic communications, ensuring that the fibers can operate effectively in various environments without risk of damage.