Experimental study demonstrates generation of annular surface plasmon polaritons along cylindrical conductors, suggesting novel multiplexed communication in terahertz regimes.
The propagation length of surface plasmon polaritons (SPPs) increases with wavelength, which makes it possible to use radiation from the far-infrared and terahertz ranges to create communication devices employing SPPs as carriers of information. In this paper, we consider methods for implementing the multiplex transmission of information along cylindrical conductors using a combination of SPPs with orbital angular momentum and present experimental setups for the experiments on the Novosibirsk free electron laser.
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Knyazev et al. (2020) studied this question.
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