Multi-mode excitation structure based on compact resonator

A resonant cavity and multi-mode technology, applied in resonators, phase influence characteristic measurement, instruments, etc., can solve problems such as complex MIM waveguide structures, achieve strong field confinement capabilities, and simplify structures
CN113036386BActive Publication Date: 2021-11-26CHINA ACADEMY OF SPACE TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA ACADEMY OF SPACE TECHNOLOGY
Publication Date
2021-11-26

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Abstract

The present invention provides a multi-mode excitation structure based on a simple resonant cavity, including a metal layer, a resonant cavity, an input channel and an output channel, the resonant cavity, the input channel and the output channel are located in the metal layer, the input channel and the The output channel is filled with air, the resonant cavity is filled with air or other refractive index materials, the resonant cavity is rectangular in shape, the input end of the input channel is open, the output end of the output channel is open, and the input The upper end of the channel is aligned with the upper end of the resonant cavity for upper end coupling, and the output channel and the resonant cavity are coupled in one of the following three ways: upper end coupling; lower end coupling; bottom end coupling. The structure is based on the MIM waveguide, which has strong field confinement ability and can break through the diffraction limit; it does not need to increase the number of resonant cavities to achieve multi-mode excitation in the cavity, which simplifies the structure, and has a wide range of optional wavelengths and is easy to adjust.
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Description

technical field

[0001] The invention relates to the field of micro-nano photon technology, in particular to a multi-mode excitation structure based on a simple resonant cavity. Background technique

[0002] Surface plasmons (SPPs) are electromagnetic shock waves that propagate along the metal-dielectric interface and decay exponentially in two directions perpendicular to the interface. Because they can break the diffraction limit of traditional optics, SPPs and The interaction between light fields realizes the modulation of light at the sub-wavelength scale, thereby realizing the miniaturization of optoelectronic devices. Compared with other SPP-based structures, metal-medium-metal (MIM) waveguides are simpler and have stronger optical field localization capabilities. With the development of nanofabrication technology, these MIM-based waveguides can realize the microstructure of various functional devices. Nanostructures will be widely used in highly integrated SoCs. [00...

Claims

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