TERAHERTZ POLYMER WAVEGUIDE Russian patent published in 2021 - IPC G02B6/00 

FIELD: optics.

SUBSTANCE: invention relates to the field of terahertz optics, in particular, to waveguides. A terahertz polymer waveguide containing a cylindrical dielectric supporting pipe, the support pipe is made of a polymer material, another pipe of the same material, the walls whereof have at least three equidistant semicircular corrugations in the direction longitudinal to the central axis, is inserted into the supporting pipe, wherein the pointed parts of the border between two adjacent corrugations are tightly abutting against the inner surface of the pipe, wherein the corrugated shape of the pipe walls creates a waveguide core on the inside thereof with a boundary constituting a surface with negative curvature. The waveguide has an external coating made of capron, a material transmitting no THz emission, wherein the geometric dimensions of the waveguide in the cross section are selected so that a single mode is formed inside the waveguide in the area of the central axis, providing low losses and dispersion for the THz signal on the transmission length.

EFFECT: increase in the diameter of the hollow waveguide core provided a fixed value of the total diameter of the waveguide, ultimately resulting in an increase in the flexibility of the waveguide and a decrease in the specific losses of the THz emission transmitted thereby.

1 cl, 5 dwg