Electromagnetic modulator based on plasma metamaterial and multifunctional modulation method
A plasma and modulator technology, applied in the direction of instruments, optics, nonlinear optics, etc., can solve the problem of single frequency range of transparent windows
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Embodiment 1
[0034] Embodiment 1: An electromagnetic modulator based on plasmonic metamaterials of the present invention, its structure is as follows Figure 1~Figure 4 As shown, including the substrate (the present embodiment is a polyimide dielectric plate (5)), the upper surface of the polyimide dielectric plate (5) is provided with four rotation-symmetrical points about the center of the polyimide dielectric plate (5). There are four upper-surface split resonant rings, and cross-shaped transverse lines (1) are arranged between the four upper-surface split-shaped resonant rings, and the cross-shaped transverse lines (1) and the split rings are mutually coupled to generate electromagnetically induced transparency.
[0035] On the lower surface of the polyimide dielectric plate (5) and the position corresponding to the four upper surface open resonant rings, four lower surface open resonant rings about the 90-degree rotational symmetry of the center are set; the upper surface open resonant...
Embodiment 2
[0042] Embodiment 2. A multifunctional electromagnetic modulation method based on plasmonic metamaterials of the present invention adopts the electromagnetic modulator based on plasmonic metamaterials (such as Figure 1~Figure 4 As shown), when the electromagnetic wave (electric field along the y-axis) is vertically incident, state 1: the electromagnetic modulator exhibits an electromagnetically induced transparency function, controlling the solid-state plasma connection branch (4) of the top split resonator ring and the bottom split resonator ring The solid-state plasma connection branch (6) is excited, and the solid-state plasma extension branch (3) of the top split resonator ring is not excited; State 2: The electromagnetic modulator behaves as an isolator function, controlling the solid-state plasma of the top split resonator ring The extension stub (3) is excited, and the solid plasma connection stub (4) controlling the split resonator ring at the top layer and the solid p...
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