Evaluation of fiber network configurations in access networks

The two most common configurations for constructing an optical access network (the dedicated fiber configuration and the shared fiber configuration) are compared in terms of economy, flexibility, and reliability. The dedicated fiber configuration (a fiber is dedicated to a specific mode) should be adopted for both narrowband and broadband services. However, if equipment costs decrease significantly in the future, the shared fiber configuration (a fiber is shared by all the nodes in a subscriber loop) will become applicable for broadband services in large areas with low demands