Journal
OPTICS EXPRESS
Volume 25, Issue 21, Pages 26221-26233Publisher
Optica Publishing Group
DOI: 10.1364/OE.25.026221
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Funding
- National Natural Science Foundation of China [61625104, 61431003]
- China Postdoctoral Science Foundation [2017M610826]
- National Key Research and Development program [2016YFA0301300]
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The dynamically tunable plasmon induced absorption (PIA) effect is demonstrated in a graphene-assisted metallodielectric grating structure. Two methods are employed to achieve the tunable PIA effect in the mid-infrared region: one is based on controlling the chemical potential of graphene by adjusting the gate voltage, the other is related to varying the refractive index of interlayer. Our calculated results reveal that high tunability in amplitude and bandwidth of the PIA effect can be achieved by using the above-mentioned methods. Compared with previous results, our scheme is much easier to fabricate and has significant applications in modulators, absorbers and sensors. (C) 2017 Optical Society of America
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