An Optical Integrated System for Implementation of N×M Optical Cross-Connect, Beam Splitter, Mux/demux and Combiner

Two-dimensional (N × M) optical system based on electro-optically encoded superimposed gratings with constant geometry, modular structure and soft control is presented. The proposed structure can realize many interesting functional blocks with important transfer functions such as cross-connect switching, beam splitting, multiplexing (demultiplexing) and combining of optical signals from N incident (with similar or different central wavelengths) to M output channels for general optical engineering purposes, optical networking and as well as DWDM applications. In this structure tilted superimposed gratings for easily separating the incident and reflected signals are used.