A MIM Tunable Plasma Filter with Embedded Sector Metal Resonator
A metal resonant cavity, plasma technology, applied in the field of micro-nano optoelectronics, can solve the problems of complex structure, high loss, affecting the scope of application, etc.
Active Publication Date: 2021-08-27
GUILIN UNIV OF ELECTRONIC TECH
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[0008] The present invention proposes a metal-medium-metal (MIM) embedded symmetrical fan-shaped metal block for the problems of high loss, complex structure, and large volume of traditional filters and surface plasmon filters that affect their application range. Nano Circular Resonator Filter
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[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific examples and with reference to the accompanying drawings. It should be noted that the directional terms mentioned in the examples, such as "upper", "lower", "middle", "left", "right", "front", "rear", etc., are only referring to the directions of the drawings. Therefore, the directions used are only for illustration and are not intended to limit the protection scope of the present invention.
[0028] Based on the embedded fan-shaped metal resonator MIM tunable plasma filter, its three-dimensional stereogram is as follows figure 1 shown.
[0029] Based on the embedded fan-shaped metal resonator MIM tunable plasma filter, its two-dimensional stereogram is as follows figure 2 As shown, it is composed of metallic silver film 2, rectangular incident waveguide 1-1 on the left, circular ...
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Abstract
The invention relates to an embedded fan-shaped metal resonant cavity MIM tunable plasma filter related to the technical field of micro-nano optoelectronics. The invention as a whole is composed of two rectangular waveguides hollowed out on a rectangular metal film and an embedded symmetrical fan-shaped metal nano-circular resonant cavity. It is found that the transmission characteristics of the structure can be effectively improved by changing the main parameters of the fan-shaped resonator angle θ, radius R, coupling distance d, and medium refractive index n in the resonator, and the tunable narrowband bandpass filter characteristics can be realized efficiently. Compared with other SPPs band-pass filters, the filter of the present invention can realize band-pass filtering in the range of 800nm to 1450nm, the highest transmittance can reach 75%, the highest quality factor can reach 70, and has more superior filtering performance. For the optimization of structural parameters, the resonance wavelength can be distributed in the 850nm and 1310nm communication windows of optical communication, which provides an important theoretical basis for the design and realization of the next generation plasmonic filter in the field of optical communication and has potential application value.
Description
[0001] (1) Technical field [0002] The invention relates to the technical field of micro-nano optoelectronics, in particular to an MIM tunable plasma filter with an embedded fan-shaped metal resonant cavity. [0003] (2) Background technology [0004] Surface plasmons are a mixture of electrons and photons excited at the interface between a metal and a medium (usually air). The remarkable characteristic of this electromagnetic wave is that the amplitude of the electromagnetic energy decays exponentially on the vertical interface. It has breakthroughs in the traditional optical diffraction limit, local field enhancement effects, minimized size, and electric field constraints, making it possible to fabricate sub-wavelength optical devices. . [0005] In recent years, waveguide structures based on surface plasmon filters mainly include two typical forms: metal-medium-metal (M-I-M) structure and medium-metal-medium (I-M-I). Compared with the I-M-I structure, the M-I-M waveguide ...
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IPC IPC(8): H01P1/208H01P7/06H01P7/10
CPCH01P1/208H01P7/06H01P7/10
Inventor 杨宏艳陈昱澎肖功利刘孟银
Owner GUILIN UNIV OF ELECTRONIC TECH