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a tunable metasurface deflector based on mim waveguide filled with phase-change material
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نویسنده
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ha yingli ,guo yinghui ,pu mingbo ,li xiong ,ma xiaoliang ,luo xiangang
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منبع
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plasmonics - 2019 - دوره : 14 - شماره : 6 - صفحه:1735 -1741
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چکیده
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Metasurfaces hold great promise for overcoming the limitations of conventional refractive and diffractive optics due to their unique electromagnetic properties. nevertheless, most of the functional metasurfaces are static. besides, beam-steering only is discretely realized for no more than three states. a new strategy for on-chip planar metasurface is proposed to realize tunable light manipulation. benefit from fast phase transitions of phase-change material and linear gradient phase generated by metasurfaces, continuously beam-steering within ± 60° at 10.6 μm can be achieved in metal-insulator-metal (mim) waveguide. moreover, the number of addressable point of the scanning deflector is theoretically estimated to be 12, about 4 times of the previous report. the designed deflector with compact size and reconfigurable functionalities have potential for applications in multifunctional photonic circuits.
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کلیدواژه
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optical waveguides ,metasurface ,surface plasmonics ,beam scanning deflector
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آدرس
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chinese academy of sciences, institute of optics and electronics, state key laboratory of optical technologies on nano-fabrication and micro-engineering, china. university of chinese academy of sciences, china, chinese academy of sciences, institute of optics and electronics, state key laboratory of optical technologies on nano-fabrication and micro-engineering, china. university of chinese academy of sciences, china, chinese academy of sciences, institute of optics and electronics, state key laboratory of optical technologies on nano-fabrication and micro-engineering, china. university of chinese academy of sciences, china, chinese academy of sciences, institute of optics and electronics, state key laboratory of optical technologies on nano-fabrication and micro-engineering, china. university of chinese academy of sciences, china, chinese academy of sciences, institute of optics and electronics, state key laboratory of optical technologies on nano-fabrication and micro-engineering, china. university of chinese academy of sciences, china, chinese academy of sciences, institute of optics and electronics, state key laboratory of optical technologies on nano-fabrication and micro-engineering, china. university of chinese academy of sciences, china
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Authors
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