The perfect shuffle/exchange Omega interconnection network is a free-space regular multistage interconnection network. It is one of great important networks to develop novel architectures of digital optical computer in parallel and data flow and optoelectronic hybrid computer in parallel multiprocessor system. This, paper presents a equivalent omega network which consists of left and right perfect shuffle interconnection as well as a spatial light switch device. A optical combination prism with the properties of low loss, and equal path length of all optical channels to implement perfect shuffle interconnection has be designed. The optical system of perfect shuffle/exchange Omega network composed of two optical combination prisms and a spatial light switch device is realized in our experiment.