Problem in 1-D waveguide

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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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<div dir=3D"ltr">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 les=
s radius. I want a single block of dielectric only in the centre which is o=
f same radius as all other blocks. But whenever the run the code, I&#39;m g=
etting a dielectric in the centre of each block. Please help me find where =
am I going wrong?<br><br>(define-param x-dim 1)<br>(define-param y-dim 20)<=
br>(define-param z-dim 4)<br><br>(set! geometry-lattice (make lattice(size =
1 1 no-size)))<br>=C2=A0(set! default-material (make dielectric (epsilon 4.=
41)))=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 <br>(set! g=
eometry(list(make block (material (make dielectric (epsilon 1)))<br>=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 (c=
enter 0 0 0) (size 0.3 1 infinity))))<br>(set! geometry (append geometry<br=
>(list (make block (material (make dielectric (epsilon 4.41)))<br>=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 (cent=
er 0 0 0) (size 0.1 1 infinity)))))<br>=C2=A0<br>(set! resolution 16)<br>(s=
et! k-points (list (vector3 0.5 0.5 0)))<br>(set! num-bands 50)<br><br><br>=
(run)<br><br></div>

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