Fiberguide systems in the subscriber loop

This paper presents an overview of the application of fiber optics in the subscriber loop plant. A review of the limitations of existing loop plant networks is given and the characteristics that fiber optics offer to overcome these limitations are examined. Possible network topologies for fiber optic loop systems are discussed and current designs, particularly those based on a centrally switched star configuration, are described. The component availability, system cost and other considerations are discussed. Finally, features of major current fiber optic loop system field trials and experiments are highlighted.