Survivability, the ability of a network to withstand and recover from failures, is one of the most
important requirements of networks. Its importance is magnified in fiber optic networks with …

We present a new algorithm which creates redundant trees on arbitrary node-redundant or
link-redundant networks. These trees are such that any node is connected to the common …

The exponentially growing number of Internet users armed with emerging multimedia
Internet applications is continuously thirsty for more network capacity. Wavelength-division …

With wavelength division multiplexing (WDM) networks the failure of a single link or
component may cause the simultaneous failure of several optical channels, potentially …

Transport networks evolved from DCS (Digital Cross-connect Systems)-based mesh
architectures, to SONET/SDH (Synchronous Optical Networking/Synchronous Digital …

The failure of a single optical link or node in a wavelength division multiplexing (WDM)
network may cause the simultaneous failure of several optical channels. In some cases, this …

The design of survivable all-optical networks based on self-healing WDM rings (SHR/WDM)
to provide 100% protection from any single link failure requires the joint solution of three sub …

Current means of providing loop-back recovery, which is widely used in SONET, relies on
fiber-based recovery, where a fiber is used to back up another fiber. We present WDM …

The majority of communications applications, from cellular telephone conversations to credit
card transactions, assume the availability of a reliable network. At this level, data are …

US5986783A - Method and apparatus for operation, protection, and restoration of heterogeneous
optical communication networks - Google Patents US5986783A - Method and apparatus for …