Terahertz wave transmission power splitting and combining structure

Abstract

The invention discloses a terahertz wave transmission power splitting and combining structure. A main branch transition structure, a main branch transmission structure, a sub-branch transmission structure and a sub-branch transition structure are sequentially arranged on a metal base. Terahertz waves are input or output from one end, slowly transformed into surface waves through the main branch transition structure and transmitted through a main branch, surface waves of the sub-branch transmission structure are divided into two paths, finally transformed into original terahertz waves through the sub-branch transmission structure and output or input from two ends of the sub-branch transmission structure respectively. The terahertz wave transmission power splitting and combining structure is simple in structural design, and only a triangular prism protrusion structure is required to be processed on the metal surface. The designed transition structure can gradually guide incident electromagnetic waves to form surface waves, the electromagnetic wave reflection is reduced, the transmission efficiency is improved, and the power splitting and combining efficiency of the structure can reach to 90% theoretically. The power splitting and combining structure has variability and cam meet terahertz waves of different frequency bands by modifying the specific size of the protrusion structure.

Description

technical field [0001] The invention relates to a power division and combination structure for electromagnetic wave transmission, in particular to a power division and combination structure for terahertz wave transmission. Background technique [0002] Terahertz waves refer to electromagnetic waves with a frequency in the range of 0.1-10 THz. Terahertz wavelengths are between 3000 and 30 μm, between millimeter waves and infrared light, and occupy a very special position in the electromagnetic spectrum. Therefore, terahertz waves are not only the transition zone from macroscopic classical theory to microscopic quantum theory, but also the transition zone from electronics to photonics. It is called the "terahertz gap (THz gap)" of the electromagnetic spectrum. On the other hand, terahertz waves also have many superior characteristics, and their main applications focus on terahertz imaging technology and terahertz spectroscopy technology. The dielectric constant can be directl...

AI Technical Summary

Problems solved by technology

However, for the terahertz band, metals are considered as perfect conductors, and surface plasmons are poorly confined on the metal surface and cannot be effectively excited.

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