Design of optical burst switches based on dual shuffle-exchange network and deflection routing

In this paper, we propose a novel approach to implement optical burst switching (OBS) using the dual shuffle-exchange network (DSN) as the core switching fabric. DSN possesses a self-routing property which allows major simplifications of the complex crossbar setup mechanisms. In addition, its asynchronous and buffer-less nature is highly preferable in the optical environment. We also show that with an appropriate error-correcting routing algorithm, the output wavelength contentions can be reduced by means of internal deflection routing.