Open MIM waveguide structure
A waveguide structure and open-type technology, which is applied in the field of open-type MIM waveguide structure, can solve problems such as Q factor instability, and achieve the effect of stable Q factor, easy integration, and improvement of Q factor.
Active Publication Date: 2019-10-15
山东昊盾警用装备有限公司
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Problems solved by technology
[0005] In view of the above problems, the purpose of the present invention is to solve the problem of unstable Q factor that exists when the optical waveguide device of the existing guided wave optical system performs waveguide coupling.
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Embodiment 1
[0028] In order to solve the defect that the Q factor is unstable when the optical waveguide device of the existing waveguide optical system performs waveguide coupling. This embodiment provides a Figure 1 ~ Figure 3 The shown open-type MIM waveguide structure includes a main body 1, an optical channel 2 is arranged above the main body 1; a resonant cavity 3 is arranged above the optical channel 2; a resonant ring 4 is arranged in the resonant cavity 3; The resonant ring 4 is provided with an opening 5; when the light enters the optical channel 2 from the entrance at the left end, surface plasmons will be excited in the optical channel 2, and are coupled with the upper resonant cavity 3 and the resonant ring 4 , the resonant cavity 3 and the resonant ring 4 each generate different plasmon resonances, and the different plasmon resonances combine to form a hybrid plasmon resonance, so that the MIM waveguide structure has a high Q factor, and The MIM waveguide structure has the...
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Abstract
The invention relates to an open MIM (metal-insulator-metal) waveguide structure, which comprises a main body, wherein an optical channel is arranged in the upper part of the main body; a resonant cavity is arranged at the upper part of the optical channel; a resonant ring is arranged in the resonant cavity; and an opening is formed in the resonant ring. The open MIM waveguide structure has the advantages of being small in volume, easy to integrate and high in sensitivity; different plasmon resonances are formed and hybrid plasmon resonances are formed through arranging a square ring in the main body and arranging an open ring in the square ring, and the generated resonances are relatively stable in type, so that a Q factor of a waveguide is improved and is more stable; and furthermore, the plasmon resonances propagated on the ring are partitioned to form a standing wave mode due to the open ring, and are coupled to a long waveguide to form narrower transmission peaks. When the structure is used for fabricating a sensor, the resonance mode is seriously affected by the refractive index of a medium in a gap, thereby achieving the sensor with higher sensitivity.
Description
technical field [0001] The invention belongs to the technical field of waveguide structures, and in particular relates to an open MIM waveguide structure. Background technique [0002] Based on the electromagnetic theory of light, guided wave optics studies the effects of propagation, scattering, polarization, and diffraction of light waves in optical waveguides, and has become the theoretical basis for various optical waveguide devices and fiber optic technologies. Usually people divide the research of optical fiber and other guided wave optics into two different fields, namely fiber optics and integrated optics, but their theoretical basis is the same, which is guided wave optics. [0003] A guided wave optical system generally consists of a light source, a coupler, an optical waveguide device, an optical modulator, and an optical detector. Compared with traditional, non-integrated discrete optical component systems, guided wave optical systems have the characteristics of...
Claims
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CPCG02B6/00
Inventor 不公告发明人
Owner 山东昊盾警用装备有限公司