N x N optical interconnection network with reduced length

Beniamino Castagnolo; Maria Rizzi

doi:10.1117/12.141908

6 April 1993 N x N optical interconnection network with reduced length

Beniamino Castagnolo, Maria Rizzi

Proceedings Volume 1794, Integrated Optical Circuits II; (1993) https://doi.org/10.1117/12.141908
Event: Fibers '92, 1992, Boston, MA, United States

Abstract

N X N Multistage Interconnection Networks are generally constituted by arrays of 2 X 2 switches linked together by some types of 'shuffle networks'. The number of stages necessary to obtain all the possible input-output links, is proportional to log₂N. This number limits the dimensions of optical networks implemented on LiNbO₃ crystals, because the length of the electrooptic switching elements cannot be reduced under a few millimeters. In order to link a number of users more than 8, a different architecture must be used. It is composed of (alpha) X (beta) switching elements with (alpha) equals 2^(nu ) and (beta) equals 2^(mu ) with (mu) does not equal (nu) . This reduces the overall network length by lowering the number of stages, even if the transversal dimension is slightly increased. In the paper the architecture of such a shuffle network is presented and its performance, in terms of networks power loss and crosstalk, is evaluated.

Citation Download Citation

Beniamino Castagnolo and Maria Rizzi "N x N optical interconnection network with reduced length", Proc. SPIE 1794, Integrated Optical Circuits II, (6 April 1993); https://doi.org/10.1117/12.141908

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