Abstract
In this paper, a new nanoscale plasmonic differential detector of wave intensities is proposed. This structure can be useful for calibration applications and for finding out if a wave intensity is high enough to pass a threshold level or not. Next, a nanoscale plasmonic uni-directional waveguide is presented. The distinction of this waveguide with similar cases is that the one-way wave-guiding is provided by adding a properly located controlling source, without employing any non-reciprocal material. This feature can be used in many applications that only uni-directional wave propagation is desirable. Both structures have been designed in metal–insulator–metal structure including cavity resonators. The operations are based on the coupling of the wave from input waveguides to the cavity resonators and decoupling to output waveguides in the cavity resonance wavelengths. The simulation results of performance of the structures, as elements applicable to photonic integrated circuits, have been obtained using the numerical method of the finite difference time domain.
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Dolatabady, A., Granpayeh, N. & Abedini, M. Nanoscale plasmonic detector of wave intensity difference and uni-directional waveguide. Opt Quant Electron 51, 230 (2019). https://doi.org/10.1007/s11082-019-1946-1
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DOI: https://doi.org/10.1007/s11082-019-1946-1