Design and Simulation of 3D 1x4 Multimode Interference Splitter

Design, simulation, and optimization of the 1x4 optical three-dimensional multimode interference splitter using IP-Dip polymer as a core and polydimethylsiloxane (PDMS) Sylgard 184 as a cladding is demonstrated. The splitter was simulated by using beam propagation method in BeamPROP simulation module of RSoft photonic tool and optimized for an operating wavelength of 1.55 mu m. According to the minimum insertion loss, the dimensions of the splitter were optimized for a waveguide with a core size of 4x4 mu m(2). The objective of the study is to create the design for fabrication by three-dimensional direct laser writing optical lithography.