Abstract

Networks with ring architectures provide increased reliability and survivability.^1,2 Especially, the bidirectional self-healing ring (SHR) networks employing the bidirectional signal transmission are very attractive since they require only two fibers instead of four fibers.^3–5 In addition, interconnected bidirectional SHR networks with optical cross-connects provide higher flexibility and survivability compared with simple SHR networks.

© 2002 Optical Society of America