Optimized Optical Splitter Demultiplexing based on light Beam Incidence on a Corrugated Interface and Beam Propagation Method (BPM)

In this study, we have conducted an inquiry into the segregation of wavelengths of Gaussian light beams with the aid of corrugated triangular wave-index interfaces using the beam propagation method (BPM). We present a newfangled approach for optical wavelength demultiplexing (DEMUX) which depends on two phenomena: the Goos-Haenchen (GH) shift and continuous refraction at a corrugated triangular wave-index medium interface. The reflected beams undergo varying lateral shifts (GH shifts), contingent on the wavelength, thus accomplishing the requisite spatial beam separation. The two light beams possess discrete ”turning points” within the corrugated triangular wave-index medium, thereby bringing about spatially separated ”back-refracted” beams. In this manuscript, we have employed the meta-heuristics to optimize the operational conditions of this demultiplexing optical splitter, rendering it possible to incorporate it into ”corrugated triangular wave-index integrated-optics” structures that can be relied upon for use in optical fiber communication networks. The Artificial Intelligence (AI) relying on Ant Colony (AC) is employed to get the optimal beam incidence. The results show that the separation of 3 media demultiplexer is better than the 2 media demultiplexer for 2 and multi wavelengths demultiplexing which is considered the major academic contribution of this article.