When temperature cycles from +40°C to -5°C, the cable experiences a temperature-related shrinkage of approximately 0. Typically, this is not noticeable since the excess length usually stays inside of the cable. With both loads, the cable. In loose tube and tight buffered fiber optic cables, post extrusion shrinkage may lead to stresses being applied on the optical fiber with the negative consequence of increased fiber attenuation. Depending on the cable structure, this excess fiber length is 1% to 1. However especially in the so called “riser applicati tical signals in the vertical direction direction within a floor e.