Which type of fiber-optic cable provides the most stable transport characteristics and additional protection from stresses caused by macro and microbends?

Loose-tube cable is designed to provide optimal performance in environments where it may be subject to various physical stresses, including macro and microbends. The structure of loose-tube cables, which consists of optical fibers enclosed within a protective tube that allows for some movement, helps to mitigate the effects of bending and environmental temperature fluctuations. This design reduces the likelihood of damage to the fibers and maintains signal integrity, making it an excellent choice for long-distance and outdoor installations, where stability and protection are paramount.

Unlike other types of fiber-optic cables, such as tight-buffered cables, which have fibers coated individually with a buffer material that offers less room to accommodate movement, loose-tube cables can better manage the physical stresses that arise from installation and environmental conditions. This capability is essential in ensuring that the fibers remain stable and functional over time, enhancing the reliability of the communication system they support.