Installing fiber optic cables in the rain can be challenging, but it is not necessarily a barrier to installation. By taking certain precautions and using specialized techniques, such as trenchless installation, it is possible to install fiber optic cables safely and. Fiber optic cables are made up of thin glass or plastic fibers that transmit data as light signals. These cables are typically installed underground or through aerial means, such as on utility poles. 2 meters (3-4 feet) deep to reduce the likelihood of accidentally being dug up. In extreme cold climates, cables may need to be buried at greater depths where there temperatures are colder and frost penetrates to. The Fiber Optic Association, Inc. (FOA) was founded in 1995 to help develop the workforce to build the fiber optic networks to support a rapid expansion in communications and the Internet. The specific environmental conditions of a project determine which method – or combination of methods – is the.