An optimal geometry of a two-element periodic cell

In this work we have considered the screen´s periodic cell containing two rectangular slots with one offset relatively to the cell´s line of symmetry. Elements of reflection matrix and value of chirality measure in dependence of this offset have been calculated. We can emphasis on two conclusions. First, the optimal offset of slot in such periodic sell of thin enough screen is equal to 1.8mm. Second, this paper is an additional checkup of chirality measure model described.