Fig. 2: Numerical optimization results.
From: Twist-Induced Beam Steering and Blazing Effects in Photonic Crystal Devices
a Performance of the different templates considered as a function of the number of free parameters. b–d Best devices obtained for the mini-layer, ellipses, and heterogenous ellipses templates respectively. The plane separating the two twisted photonic crystals is drawn in red. e The transmission in order \((+1,-1)\) for all twist angle values of the best design in the homogenous ellipse template (c). f The \({\mathfrak{R}}{{\rm{E}}}_{{\rm{y}}}\) field map for the previous design with Y polarization
