HI every one,
I am an undergraduate student and doing my final year project on Photonic
Crystal with Heterostructure. I am new user of MEEP. when i calculate the
transmission spectra, i have got some problems. the structure is something
like :
ooooxxxxoooo
ooooxxxxoooo
ooooxxxxoooo
o and x are all rods only with different epsilons. i do a flux-region at
the end of the structure but before PML. run CTL-file but the output just
gave me 0 flux at every time step. i dont understand why. have i done
something wrong?
Could somebody please help me in this problem?
============
CTL-file
============
(reset-meep)
(set! geometry-lattice (make lattice (size 21 21 no-size)))
(set! geometry
(append
(geometric-object-duplicates (vector3 1 0) 0 17
(make cylinder (center -8.5 2.5) (radius 0.4) (height infinity)
(material (make dielectric(epsilon 12)))))
(geometric-object-duplicates (vector3 1 0) 0 17
(make cylinder (center -8.5 1.5) (radius 0.4) (height infinity)
(material (make dielectric(epsilon 12)))))
(geometric-object-duplicates (vector3 1 0) 0 17
(make cylinder (center -8.5 0.5) (radius 0.4) (height infinity)
(material (make dielectric(epsilon 12)))))
(geometric-object-duplicates (vector3 1 0) 0 17
(make cylinder (center -8.5 -0.5) (radius 0.4) (height infinity)
(material (make dielectric(epsilon 12)))))
(geometric-object-duplicates (vector3 1 0) 0 17
(make cylinder (center -8.5 -1.5) (radius 0.4) (height infinity)
(material (make dielectric(epsilon 12)))))
(geometric-object-duplicates (vector3 1 0) 0 17
(make cylinder (center -8.5 -2.5) (radius 0.4) (height infinity)
(material (make dielectric(epsilon 12)))))
(geometric-object-duplicates (vector3 1 0) 0 5
(make cylinder (center -2.5 2.5) (radius 0.4) (height infinity)
(material (make dielectric(epsilon 6)))))
(geometric-object-duplicates (vector3 1 0) 0 5
(make cylinder (center -2.5 1.5) (radius 0.4) (height infinity)
(material (make dielectric(epsilon 6)))))
(geometric-object-duplicates (vector3 1 0) 0 5
(make cylinder (center -2.5 0.5) (radius 0.4) (height infinity)
(material (make dielectric(epsilon 6)))))
(geometric-object-duplicates (vector3 1 0) 0 5
(make cylinder (center -2.5 -0.5) (radius 0.4) (height infinity)
(material (make dielectric(epsilon 6)))))
(geometric-object-duplicates (vector3 1 0) 0 5
(make cylinder (center -2.5 -1.5) (radius 0.4) (height infinity)
(material (make dielectric(epsilon 6)))))
(geometric-object-duplicates (vector3 1 0) 0 5
(make cylinder (center -2.5 -2.5) (radius 0.4) (height infinity)
(material (make dielectric(epsilon 6)))))))
(set! sources (list
(make source
(src (make gaussian-src (frequency 0.25) (fwidth 0.4)))
(component Ez)
(center -9 0)
(size 0 6))))
(set! pml-layers (list (make pml (thickness 1.0))))
(set! resolution 10)
(define trans (add-flux 0.25 0.4 100 (make flux-region (center 9 0) (size
0 12))))
(use-output-directory)
(display-fluxes trans)
(run-sources+
(stop-when-fields-decayed 50 Ez
(vector3 9 0) 1e-3)
(at-beginning output-epsilon)
(at-end output-efield-z))
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