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wlwanglin

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(define-param eps (* 3.45 3.45))                     
(define-param a 1)
(define-param r1 (/ 120 420))                                                            
(define-param Ny 31)                    
(define-param Nx 21)


(define-param pad 2) ; padding between last hole and PML edge                  
(define-param dpml 1) ; PML thickness  

; The cell dimensions                                                           
(define-param sx (+ Nx (* 2 (+ pad dpml)))) ; size of cell in X direction                              
(define-param sy (+ Ny (* 2 (+ pad dpml)))); size of cell in Y direction                        

; define a couple of parameters to determine the frequency range
(define-param fcen 0.5) ; pulse center frequency
(define-param df 0.4)  ; pulse width (in frequency)
(define-param nfreq 401) ; number of frequencies at which to compute flux
(define-param Sw 10)

(set! geometry-lattice (make lattice (size sx sy no-size)))
(set! geometry
      (append ; combine lists of objects:                                       
      (list (make block (center 0 0) (size Nx Ny infinity)
                   (material (make dielectric (epsilon eps)))))
       (geometric-objects-duplicates (vector3 0 1) -15 15
       (geometric-object-duplicates (vector3 1 0) -10 10
           (make cylinder
              (material air)
              (center 0 0)           
              (radius r1)
             (height infinity)
       )))
))

(set! pml-layers (list (make pml (thickness dpml))))
(set-param! resolution 15)

; Set sources
(set! sources (list
               (make source
                 (src (make gaussian-src (frequency fcen) (fwidth df)))
                 (component Ey)
                 (center (+ dpml (* -0.5 sx)) 0)
                 (size 0 Sw))))

(define trans                                          
        (add-flux fcen df nfreq
                  (make flux-region
                    (center (- (* 0.5 sx) dpml 0.5) 0) (size 0 Ny))))
                              
(run-sources+ (stop-when-fields-decayed
               50 Ey
               (vector3 (- (* 0.5 sx) dpml 0.5) 0)
               1e-3)
              (at-beginning output-epsilon))


(display-fluxes trans)
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2Â¥2012-08-01 09:15:48
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