There are 2 main laying types for overhead fiber optic cables, hanging under steel strands and self-supporting. The laying method is to hang or bundle (wind) erection by means of pole suspension wire. Steel messenger strand consists. The Fiber Optic Association, Inc. Fiber optic cables have Kevlar aramid yarn or a fiberglass rod as their strength member. It is intended for personnel with prior experience in planning, engineering, or placement of aerial cable. During installation, all curvatures should be smooth.