Button-shaped terahertz wave polarization converter

Abstract

The invention discloses a button-shaped terahertz wave polarization converter. The button-shaped terahertz wave polarization converter comprises a signal input end, a signal output end, a button-shaped structure transmission layer, a matrix and a metal level structure, wherein the button-shaped structure transmission layer is connected with the matrix, and comprises 9 button-shaped metal period units; each button-shaped metal period unit includes a first quarter circular metal structure, a second quarter circular metal structure, a third quarter circular metal structure, a fourth quarter circular metal structure and a double-opening circular ring structure; when a signal is input from the signal input end, and successively passes the button-shaped structure transmission layer and the matrix, and then is output through the metal layer structure; when the input signal is a TE wave, the signal output end outputs a TM wave; when the input signal is a TM wave, the signal output end outputs a TE wave, so that the polarization transition function can be realized; and the button-shaped structure transmission layer realizes conversion of the polarization mode. The button-shaped terahertz wave polarization converter has the advantages of being simple and compact in structure, being small in size, being high in beam splitting rate, being convenient for processing, and the like.

Description

technical field [0001] The invention relates to a terahertz wave polarization converter, in particular to a button-shaped terahertz wave polarization converter. Background technique [0002] In recent years, the terahertz wave between the mature millimeter wave and infrared light on the electromagnetic spectrum is undoubtedly a new research field. The frequency of terahertz wave is 0.1-10THz, and the wavelength is 30μm-3mm. For a long time, due to the lack of effective terahertz wave generation and detection methods, compared with traditional microwave technology and optical technology, people have little understanding of the nature of electromagnetic radiation in this band, so that this band has become the terahertz wave in the electromagnetic spectrum. void. With the breakthrough of terahertz radiation source and detection technology, the unique and superior characteristics of terahertz have been discovered and have shown great application prospects in material science, ...

AI Technical Summary

Problems solved by technology

However, most of the existing terahertz wave polarization converters have many shortcomings such as complex structure, low beam splitting rate, and high cost. Therefore, it is of great significance to study terahertz wave polarization converters with simple structure, high conversion rate, and low cost.

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