As the applications of optical systems are developed in recent years, especially in the field of communication, optical analog computing considered one of the most prominent and growing topics. Although most data computing is still digital; analog optical computing can overcome multiple drawbacks followed by their digital counterparts, such as algorithm complexities, data Analog computing, Spatial analog optical computing, Green’s function approach, Computational metamaterial, Metasurface, Angular scattering, Transmission line model, Multilayer computer.
