Two-bounce optical arbitrary permutation network

Abstract

The two-bounce free-space arbitrary interconnection architecture is presented. It results from a series of three-dimensional topological transformations to the Benes network, the minimum rearrangeable nonblocking network. Although functionally equivalent to the Benes network, it requires only two stages of global (spanning multiple chips) optical interconnections. The remaining stages of the modified Benes interconnection network are local and are implemented electronically (on individual chips). The two-bounce network is optimal in the sense that it retains the Benes minimum number of electronic switching resources yet also minimizes the number of optical links needed for global interconnection. Despite the use of higher-order k-shuffle (k > 2) global optical interconnects, the number of 2 x 2 switching elements is identical to the two-shuffle Benes network: there is no need for k x k crossbar switches for local interconnection at each stage. An experimental validation of the two-bounce architecture is presented.

Review of multiscale optical design

“…Higher order shuffles (k-shuffles, Fig. 9) based on interleaving nodes dispersed on an array of chips were implemented and topologically mapped onto the perfect shuffle and other required interconnection patters [35,36]. In each of these systems, a plane that contained light sources and/or detectors was partitioned, spatially interspersed, and imaged onto a similar plane.…”

“…In this way, the use of multiscale optical design 9. Higher order (k) shuffle concept built upon the perfect shuffle that increased the symmetry of the system, allowing folding (from [24,36], courtesy of OSA). provided the needed functionality-the interspersed interconnection pattern itself-for the architecture.…”

Optical logic circuits using double controlled logic gate

“…Cross-bar architecture is very important for use in optical routing control [70,71]. DCL can be the switching element in cross-bar network architecture.…”