Published May 2003
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Microwave analogue to a subwavelength plasmon switch
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Abstract
We construct and characterize a three terminal modulator, which operates in the microwave band at 8.0 GHz (λ = 3.7 cm) via interference of electromagnetic waves confined to a subwavelength structure. On/off ratios of more than 20 dB have been observed. The modulator consists of intersecting linear arrays of closely spaced metal rods, similar to Yagi antenna aerials, that act as waveguides. The experimental results compare favorably with modeled modulation characteristics determined by full-field electromagnetic simulation. Analogies to potential optical frequency plasmonic devices, consisting of arrays of nanometer-scale metal particles, are discussed.
Additional Information
© 2003 IEEE. Reprinted with permission. Publication Date: May 27-30, 2003. The authors acknowledge Prof. Bill Bridges of Caltech for valuable discussions and loan of microwave laboratory equipment. LAS would like to thank Robb Walters and Julie Biteen for their tremendous logistical help during a cross-country lab relocation. This work was supported by the Air Force Office of Scientific Research.Attached Files
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- Air Force Office of Scientific Research (AFOSR)
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