Abstract

The network topologies that have been proposed for electronic switching systems must often be modified to satisfy the unique constraints placed on the system by the use of photonic technologies. This paper presents modifications to a class of O(N log₂N) multistage interconnection networks known as Inverse Augmented Data Manipulator (IADM) networks^[1] (Fig. 1) which are based on Plus-Minus-2ⁱ connection patterns. The modified Inverse Augmented Data Manipulator network requires that some of these interconnections be trimmed from the edges of the network to simplify the optical components required in a photonic design, so the network is called the Trimmed Inverse Augmented Data Manipulator (TIADM) network (Fig. 2). The TIADM network can be modified (as in Fig. 3) to have three-dimensional interconnections between two-dimensional stages of nodes, and this network will be called a two-dimensional (2D) TIADM network. The large number of connections required in the 2D TIADM make the network attractive as a potential candidate for photonic switching architectures.

© 1989 Optical Society of America