Optical filter with Fabry-Perot resonator comprising a plate-shaped wire grid polarizer

摘要

The present disclosure is an optical filter which includes: a Fabry-Perot resonator equipped with a laminated structure including one sheet of first metal layer, one sheet of second metal layer, and a dielectric layer; and one sheet of plate-shaped wire grid polarizer. The second metal layer is parallel to the first metal layer, the dielectric layer is interposed between the first metal layer and the second metal layer, the one sheet of plate-shaped wire grid polarizer is embedded in the dielectric layer, the one sheet of plate-shaped wire grid polarizer comprises three or more metal wire layers, the metal wire layers are parallel to one another, and the one sheet of plate-shaped wire grid polarizer is parallel to the first metal layer. In the optical filter according to the present invention, the effective extinction ratio of the wire grid polarizer is increased.

主权项

1. An optical filter comprising:
a Fabry-Perot resonator comprising a laminated structure including one sheet of first metal layer, one sheet of second metal layer, and a dielectric layer; and one sheet of plate-shaped wire grid polarizer, wherein the second metal layer is parallel to the first metal layer; the dielectric layer is interposed between the first metal layer and the second metal layer; the one sheet of plate-shaped wire grid polarizer is embedded in the dielectric layer; the one sheet of plate-shaped wire grid polarizer comprises three or more metal wire layers; the metal wire layers are parallel to one another; and the one sheet of plate-shaped wire grid polarizer is parallel to the first metal layer.