What Is the Fiber Optic Cable Blowing Procedure? In fiber optic cable blowing, high-speed airflow is combined with a mechanical pushing force to produce the installation, known as blowing or jetting. Several. Fiber optic cable blowing, also known as fiber jetting, is the most efficient and cost-effective technique for installing fiber optic cables into pre-installed ducts. Compressed air is injected in the duct inlet after few hundred meters. Dive Into the Future: The Joy of Fiber Optic Installation! The mere thought of fiber optic installation can set the heart racing! Picture this: a lightweight, flexible cable, capable of carrying vast amounts of data over long distances at lightning speed. It is commonly used to install cables with optical fibers in underground polyethylene ducts and is an alternative to pulling.