I want to create a line defect 1-D PhC waveguide. Below is my ctl file and the image of epsilon file. I have a default material of 4.41 dielecric constant and i have inserted blocks of air. To temove a single block, I have inserted a block of dielectric in the centre of slightly less radius. I want a single block of dielectric only in the centre which is of same radius as all other blocks. But whenever the run the code, I'm getting a dielectric in the centre of each block. Please help me find where am I going wrong?
(define-param x-dim 1) (define-param y-dim 20) (define-param z-dim 4) (set! geometry-lattice (make lattice(size 1 1 no-size))) (set! default-material (make dielectric (epsilon 4.41))) (set! geometry(list(make block (material (make dielectric (epsilon 1))) (center 0 0 0) (size 0.3 1 infinity)))) (set! geometry (append geometry (list (make block (material (make dielectric (epsilon 4.41))) (center 0 0 0) (size 0.1 1 infinity))))) (set! resolution 16) (set! k-points (list (vector3 0.5 0.5 0))) (set! num-bands 50) (run)
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