Multi-channel terahertz wave filter

Abstract

The invention discloses a multi-channel terahertz wave filter. The multi-channel terahertz wave filter comprises dielectric cylinders and a signal input end, a first signal output end, a second signal output end, a third signal output end, a fourth signal output end, a fifth signal output end, a sixth signal output end, a seventh signal output end, a first photonic crystal waveguide, a second photonic crystal waveguide, a third photonic crystal waveguide, a fourth photonic crystal waveguide, a fifth photonic crystal waveguide, a sixth photonic crystal waveguide, a seventh photonic crystal waveguide, a first resonant cavity, a second resonant cavity, a third resonant cavity, a fourth resonant cavity, a fifth resonant cavity and a sixth resonant cavity which are arranged among the dielectric cylinders, wherein the dielectric cylinders are arranged in a two-dimensional period, and terahertz waves with seven different frequencies are input and are resonant to different output ports to be separately output respectively by different structured photonic crystal resonant cavities, so that a filtering function is achieved. The multi-channel terahertz wave filter has the advantages of simplicity in structure, high filtering performance, small size, low cost and the like, and is easy to integrate.

Description

technical field [0001] The invention relates to a beam splitter, in particular to a multi-channel terahertz wave filter. 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, gas detection, biological and medical de...

AI Technical Summary

Problems solved by technology

However, most of the existing terahertz wave filters have many shortcomings such as complex structure, low filtering performance, single filtering frequency, and high cost. Therefore, it is of great significance to study terahertz wave filters with simple structure, low cost, and small size.

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