Controllable terahertz wave switch

Abstract

The invention discloses a controllable terahertz wave switch, which comprises dielectric cylinder photonic crystals in two-dimensional periodic arrangement, a first signal input end, a second signal input end, a first offset signal input end, a second offset signal input end, a first signal output end, a second signal output end, a first single-mode waveguide, a second single-mode waveguide, a third single-mode waveguide, a fourth single-mode waveguide, a fifth single-mode waveguide, a sixth single-mode waveguide, a first photonic crystal resonant ring, a second photonic crystal resonant ring,a third photonic crystal resonant ring, a first coupled photonic crystal dielectric cylinder array and a second coupled photonic crystal dielectric cylinder array, wherein the first signal input end,the second signal input end, the first offset signal input end, the second offset signal input end, the first signal output end, the second signal output end, the first single-mode waveguide, the second single-mode waveguide, the third single-mode waveguide, the fourth single-mode waveguide, the fifth single-mode waveguide, the sixth single-mode waveguide, the first photonic crystal resonant ring, the second photonic crystal resonant ring, the third photonic crystal resonant ring, the first coupled photonic crystal dielectric cylinder array and the second coupled photonic crystal dielectric cylinder array are located between the dielectric cylinder photonic crystals; when the offset signal input ends continuously input offset signals, terahertz waves are controlled to be output from different signal output ends through inputting the signals from different signal input ends, thereby achieving the controllable terahertz wave switch. The controllable terahertz wave switch has the advantages of being simple in structure, high in controllability, small in size, low in cost and easy to integrate.

Description

technical field [0001] The invention relates to a switch, in particular to a controllable terahertz wave switch. Background technique [0002] Terahertz radiation is a general term for electromagnetic radiation of a specific band. It is located between microwave and infrared radiation in the electromagnetic spectrum. The name of terahertz radiation comes from its oscillation frequency of about 1THz. In the field of electronics, this Electromagnetic waves in the frequency band are also called millimeter waves and submillimeter waves; and in the field of spectroscopy, it is also called far-infrared rays. Before the mid-1980s, due to the lack of high-energy, high-efficiency, stable operation of terahertz radiation sources at room temperature and effective terahertz wave detection technology, the research progress of terahertz technology and applications was very slow, and the relevant literature reports were few. It can be counted, the terahertz band has become the only band i...

AI Technical Summary

Problems solved by technology

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

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