A Multi-Fiber Ring Architecture For Distributed Lightwave Networks.

We propose and analyze a lightwave packet network architecture suitable for local applications (office, campus and metropolitan areas). In describing the architecture, careful distinction is made between the physical topology depicting the physical- link arrangement and the connectivity graph showing logical connections among various nodes. Also emphasized are the practicality of implementation, cost and upward compatibility with future technology. The physical layout of the network is based on a multi-fiber ring whereby a cable consisting of multiple fibers is deployed as a passive interconnect fabric for the entire network. A node is connected into the network by intercepting three fibers in the cable and inserting itself between the cut fibers. Packets received are examined for their destination addresses and judiciously routed to the appropriated outbound lines or the local exit.