This guide explains how to design and install indoor fiber for FTTH and FTTR projects using LSZH G. B3 bend-insensitive OS2 cables, so you meet safety, performance and aesthetic requirements in one shot. TIA/EIA-570 expects fiber as a first-class medium in homes, MDUs and. 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 charter of the FOA was to promote professionalism in fiber optics through education, certification, and. Recommendations for Fiber Optic Cable Installation Where reels are supplied with protective material fitted over the cable, the protection should remain in place until the cable will be installed. The cable should be bent as little as possible. Fiber optic cable bend radius is a critical mechanical parameter that determines how sharply a cable can be bent without risking microbending, macrobending, signal loss, or long-term structural fatigue. Proper bend radius control ensures the integrity of optical performance and protects the glass. Bending losses are a function of the fiber type (SM or MM), fiber design (core diameter and NA), transmission wavelength (longer wavelengths are more sensitive to stress) and cable design. In practice, you'll encounter two flavors.