Batch wavelength assignment in all-optical central-switch networks

Summary form only given. There have been numerous studies of dynamic wavelength assignment in all-optical networks that sequentially establish calls one-by-one. We believe we present the first known study of assigning wavelengths to batches of calls at a time. One motivation for this is an optical backbone network supporting logical topologies (each one a set of connections used by a higher-layer network), which arrive, depart, or reconfigure unexpectedly. We propose a framework for studying batch assignment and apply it to a central-switch network where N stations are interconnected by bi-directional links to a wavelength-selective switch without wavelength changers.