The Moore’s law predicts that the number of transistors inside integrated circuit doubles every 18 months. This is possible thanks to dimensions scaling of CMOS (complementary metal oxide semiconductor) technology. However, the scaling process has physical limitations. The power density increases dramatically with the dimensions scaling and the performance of circuit, that is the main issue. For this reason, a set of new technologies is developed. One possibility is Magnonics. This technology exploits the propagation of Spin-waves inside waveguides realized with Yttrium ion Garnet. When two identical waveguides are placed sufficiently close to each other, their dipolar interaction causes a splitting of the dispersion curve into the symmetric mode and the antisymmetric mode.