Bernard Cousin, Miklos Molnar, and Fen Zhou (2010)
Light-Hierarchies: Optimal Multicast Routes under Optical Constraints
In: IEEE Photonics Global Conference (PGC 2011), Singapore, Singapore, pages 1-3.
Multicast routing in all optical WDM networks where the
light splitting capacity of some optical switches is
limited is an important problem. The computation problem of
the minimum cost multicast routes under optical constraints
is NP-difficult. To solve the optimal multicast routing
problem under physical constraints, we propose a new
routing structure called 'light-hierarchy''. In a
light-hierarchy, the multicast route can traverse the same
optical switch several times using the same wavelength.
This new routing structure may improve both the cost of the
optical structures and the throughput on WDM multicast
networks.