Terahertz waveguide

Abstract

The invention provides a terahertz waveguide comprising: an input end including an input-end waveguide and an input-end micro-structure waveguide which are successively connected to each other; a transmission end including a sub-wavelength waveguide, an air layer surrounding the sub-wavelength waveguide, and an outer wrapping layer surrounding the air layer, wherein one end of the sub-wavelength waveguide is connected to the other end of the fiber core of the input-end micro-structure waveguide, and one end of the outer wrapping layer is connected to the wrapping layer of the input-end micro-structure waveguide; and an output end including an output-end micro-structure waveguide and an output-end waveguide, wherein the other end of the sub-wavelength waveguide is connected to one end of the fiber core of the output-end micro-structure waveguide, the other end of the outer wrapping layer is connected to the wrapping layer of the output-end micro-structure waveguide, and the other end of the fiber core of the output-end micro-structure waveguide is connected to the other end of the output-end waveguide. The terahertz waveguide solves the problem that a conventional sub-wavelength waveguide needs mechanical support in the whole transmission direction, ensures that the two-end structure has the least influence on the transmission of the internal terahertz wave in the main transmission section, and realizes the isolation of the transmission waveguide and the environment.

Description

technical field [0001] The present invention relates to the field of terahertz, in particular to a terahertz waveguide. Background technique [0002] Because terahertz waves have some characteristics incomparable to other electromagnetic bands in the electromagnetic field, such as low energy, water absorption characteristics, strong penetrability, etc., it is very important in the fields of medical imaging, chemistry, biology, communication, etc. application value. Since the terahertz signal is greatly affected by water vapor absorption and atmospheric scattering, the attenuation coefficient is so large when it is transmitted in free space that it cannot be transmitted over a long distance, so the research on terahertz waveguides is of great significance to the development of terahertz technology. Very significant. [0003] Some researchers have proposed a sapphire fiber with a diameter of 150-325 μm, which realizes low-loss single-mode transmission of terahertz waves. On...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides a terahertz waveguide, which solves the problem that conventional sub-wavelength waveguides need mechanical support in the entire transmission direction, and at the same time ensures that the structures at both ends are sensitive to the internal terahertz wave in the main transmission section. The influence of the transmission is minimal, and the transmission waveguide is isolated from the environment

Images