The calculation results obviously show that the width and center position of band gaps depend on the position and the refractive index as well as the radius of the cylinder doped with impurities 数值结果表明，对于一定的入射方向，光子晶体中的带隙的宽度、中心位置都受到掺杂所处的位置、掺杂物的折射率、掺杂柱的粗细不同程度的影响。
