Surface Plasmon Wave Demultiplexer Based on Interference Destruction

A technology of surface plasmon and decomposition multiplexer, which is applied in the direction of instruments, optical waveguides, light guides, etc., can solve the problems of low transmission efficiency, achieve high transmission efficiency, solve reflection problems, and have wide application prospects
CN103048735BInactive Publication Date: 2014-10-15XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
Publication Date
2014-10-15
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention provides a surface plasma wave demultiplexer based on destructive interference, which mainly solves the problem that the transmission efficiency of the existing surface plasma wave demultiplexer is lower. The surface plasma wave demultiplexer based on the destructive interference comprises metal layers arranged at two sides of a medium layer; a plurality of coupled output resonant cavities are formed in the metal layer at one side of the medium layer; each coupled output resonant cavity is correspondingly provided with an outgoing channel; each outgoing channel is arranged at one side of the metal layer away from the medium layer and is symmetrical to the center of the coupled output resonant cavity. The structure of the surface plasma wave demultiplexer provided by the invention has stronger effects of light bondage, can break through the limitation of diffraction limit, and can transmit light in a nanometer scale; the surface plasma wave demultiplexer can be effectively connected with electronic apparatuses and conventional photon devices in a matching way, so that the reflection problem of the optical signal is effectively solved, and the surface plasma wave demultiplexer has wide application prospects in optical communication, optical integration, optical information processing and the like.
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Description

technical field

[0001] The invention relates to a wave demultiplexer, in particular to a surface plasmon wave demultiplexer based on interference and cancellation. Background technique

[0002] The plasmonic wave demultiplexer has many advantages, such as simple and compact structure, small size, not limited by the diffraction limit, and provides the possibility of compatibility between electronic circuits and photonic devices. In many fields, especially optical integration, optical computing and optical It has broad application prospects in information processing and other fields.

[0003] Based on the characteristics of metal nano-resonator filtering and high beam confinement of metal-dielectric-metal waveguide, surface plasmon wave demultiplexer has many unique advantages. Generally speaking, the position and transmission efficiency of the working wavelength can be effectively adjusted by rationally designing the geometric parameters of the metal resonator, and the optic...

Claims

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