$pattern tri period

出自 DDCC TCAD TOOL Manual
於 2017年12月26日 (二) 11:42 由 Yrwu (對話 | 貢獻) 所做的修訂

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The pattern tri period is the same definition in pattern type as the


$pattern_tri_period
pattern_tri_num
pattern_type N_period period_space x_{1} y_{1}  x_{2} y_{2}  x_{3} y_{3}  n_{r} \alpha if_empty

For a triangular shape, we need 3 points (x1,y1), (x2,y2), and (x3,y3) to define the triangular shape. Then the refractive index and the absorption coefficient is put in the simulation.


Parameter Explanation

  • n : number of empty section.
  • type : type1=triangle, type2=circle, type3=ellipse, type4=rectangular, type5=Sinkx function up, type6=Sinkx function down, type7=Sinkx function up, type8=Sinkx function down.
  • f1-f6 : you can refer to the information where at bottom of this page.
  • int_period_num :
  • f_period_spacing :


Example

Type.1~4 are triangle, circle, ellipse and rectangle.

If the parameters are not show in the figure, you should set those parameters as 0.

Pic1.png



Type5~8 are sine shape period structure.

Type.5 and 6 can be determined by this expression:

f_6<y<f_1sinf_2x+f_3;

f_4<x<f_5

Type.7 and 8 can be determined by this expression:

f_6<x<f_1sinf_2y+f_3;

f_4<y<f_5

Pic2.png

$emptyperiodshape,