Research on WDM optical transport network with GMPLS technology

Wavelength-division multiplexing (WDM) is the best technology currently available to handle the rapidly increasing demand for bandwidth in fiber-optical telecommunications networks. This paper analyzes WDM transport network and discusses GMPLS technology for WDM network. Today, WDM optical transport networks have become more complex over the years and have extended into the metropolitan areas closer to network customers. In addition, a number of business applications are now provided from different locations, which depend heavily on the connectivity of the wide area network. Many of these applications are mission critical and require a high level of reliability. Furthermore, given the recent emphasis on hardening networks against natural disasters and terrorist activities, enhancing the robustness of their telecommunication networks has become a priority for most service providers.