Thermally controlled multiband,mode-switching plasmonic filter operating at terahertz frequencies |
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Authors: | Jiawei Sui Lishuang Feng |
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Affiliation: | Department of Instrumental Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China |
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Abstract: | A thermally controlled multiband, mode-switching plasmonic filter with periodic subwavelength metal asterisk-shaped air hole arrays has been proposed in the terahertz range. Utilizing the changing properties to terahertz wave propagating on the metal-semiconductor interface and in the semiconductor InSb at varying temperature, thermally controlled multiband, mode-switching plasmonic filter owns an excellent tuning ability to terahertz wave. The simulation results show that the maximum transmittance of the structure is 99.8% at 434 GHz, 80 K, the bandwidths at 80 K are 56 GHz at 0.434 THz, 14 GHz at 944 GHz and maximum intensity modulation depth could reach to 99.8% at 434 GHz between 80 K and 373 K. |
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Keywords: | Millimeter wave integrated circuits Filters Tunable circuits and devices |
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