a textile made by weaving while crossing stainless wires as warp yarn and silk yarns as weft yarn one by one alternately , and this textile is attached to a frame body to configure a wire grid . the pitch for the stainless wires is determined depending on a wavelength to be polarized and analyzed . furthermore , the silk yarns are removed if necessary . this configuration avoids problems with cutting of metal wire or irregular intervals between metal wires because of long fine metal wires tightened parallel to each other in the frame body , and problems such as multiple reflection or interference on a substrate or a base material because of fine wire patterns made by etching or the like with the use of the substrate or base material , thereby obtaining an easily - manufactured , low - cost and high - precision wire grid for polarization and analysis of electromagnetic waves .