Fig. 7: Demultiplexer optimization starting from two different initial designs: (left panel) a 2 × 2 array of holes and (right panel) a single square hole at the center of the design region.
From: Inverse-design topology optimization of magnonic devices using level-set method
(a/e) Objective function evolution, with insets showing the initial and final designs of the demultiplexer. (b, c/f, g) Spin-wave separation during the optimization process. (d/h) Spin-wave propagation maps of the final designs for the two excitation frequencies under study.
