An Optical Integrated system for Implementation of Optical Cross-connect, Beam Splitter, Mux/demux and Combiner

摘要

Two-dimensional (N X M) optical system based on electro-optically encoded superimposed gratings with constant geometry, modular structure and soft control is presented. Our 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. Using electrical control pins, totally and partially transmission (or reflection) coefficient (transfer function) is controlled. In this design each incident channel have 2K+1 individual wavelengths (practically infinite and really depend on encoding methods), which can be redirected to M output channels according to predefined flexible algorithms. The proposed system can be implemented with 3-layers optical waveguide structure including electro-optic core using planar technology with similar or dissimilar modules (Gratings).