Title :
Hybrid hierarchical optical networks
Author :
Izmailov, Rauf ; Ganguly, Samrat ; Wang, Ting ; Suemura, Yoshihiko ; Maeno, Yoshiharu ; Araki, Soichiro
fDate :
11/1/2002 12:00:00 AM
Abstract :
Hybrid hierarchical optical cross-connects enhance the performance/cost ratio of optical networks by providing transparent (optical) switching of sets of wavelengths (wavebands) in addition to opaque (electrical) switching of individual wavelengths. As network bandwidth gets cheaper, and the performance bottleneck moves to switching nodes, these systems provide an attractive scalable solution for next-generation optical networks. We describe key technological components (including flexible nonuniform wavebands) of hybrid hierarchical optical cross-connects and discuss their performance/cost implications.
Keywords :
optical fibre networks; optical switches; telecommunication network routing; wavelength division multiplexing; WDM; electrical switching; flexible nonuniform wavebands; hybrid hierarchical optical cross-connects; hybrid hierarchical optical networks; network bandwidth; opaque switching; optical switching; performance/cost ratio; separate routing model; switching nodes; transparent switching; wavelength-division multiplexing; Asynchronous transfer mode; Costs; National electric code; Next generation networking; Optical fiber networks; Optical packet switching; Optical wavelength conversion; Packet switching; Switching circuits; Telecommunication traffic;
Journal_Title :
Communications Magazine, IEEE
DOI :
10.1109/MCOM.2002.1046999
