Broadband surface plasma logic input source

Abstract

The invention relates to a broadband surface plasma logic input source which comprises a substrate layer and a metal layer. The substrate layer is made of a low-refractive-index material. The metal layer is formed above the substrate layer. A plurality of rectangular rings with four smooth corners and waveguides at two sides of the rectangular rings are etched on the metal layer through focused ion beam etching, wherein the rectangular rings with four corners can be arranged parallelly or vertically. The rectangular rings which are etched on the metal layer and four smooth corners and the waveguides at two sides of the rectangular ring form the broadband surface plasma logic input source. According to the broadband surface plasma logic input source, An optical field resonates at an interface between an air medium and the metal. Because the metal layer is provided with the rectangular ring structures with four smooth corners each and waveguides at two sides of the rectangular ring, resonance between a resonance electromagnetic wave and the annular structure occurs. An annular resonance chamber realizes relatively high inhibition for the optical field. Because the optical field with a specific wavelength is inhibited on the metal surface layer and is propagated circularly, the dimension of the device can be effectively reduced. Furthermore on condition of broadband, partial light is emitted out of ports along the waveguides at two sides of the rectangular rings, thereby realizing a logic gate.

Description

technical field [0001] The invention belongs to the field of optoelectronic devices, in particular to an optical resonator and a logic AND gate. Background technique [0002] Because resonator structures can be applied to high-performance quantum optical devices, optical sensors and low-energy-loss optoelectronic devices, research on resonator structures has developed rapidly in recent years, and various resonator structures have sprung up, such as Photonic crystal resonators and dielectric disk resonators, etc. Although these resonators exhibit good performance, they cannot break through the diffraction limit size limit and cannot realize the miniaturization of devices. [0003] Existing research attempts to apply surface plasmon polariton (SurfacePlasmonPolariton, SPP) to the resonator structure. Surface plasmon is an electromagnetic wave mode caused by the interaction between light and free electrons on the metal surface. It is confined near the metal-medium interface a...

AI Technical Summary

Problems solved by technology

Traditional optical devices are constrained by the diffraction limit, and their miniaturization and integration are limited. However, the characteristics of surface plasmons can break through the diffraction limit well, and are used in high-speed optical communications for the manufacture of integrated optical circuits based on surface plasmons. provides the possibility

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