Compact Incoherent Image Differentiation with Nanophotonic Structures

There are significant recent interests in using nanophotonic structures to perform differentiation operation on images for edge detection purposes. All previous works using nanophotonic structures, however, can only operate with coherent light. Here we introduce a hybrid optoelectronic approach that enables one to use nanophotonic structures to perform differentiation operation with incoherent light. As a demonstration, we consider a photonic...