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One of the challenges of the modern photonics is to develop all‐optical devices enabling increased speed and energy efficiency for transmitting and processing information on an optical chip. It is believed that the recently suggested Parity‐Time (PT) symmetric photonic systems with alternating regions of gain and loss can bring novel functionalities. In such systems, losses are as important as gain...
We study two major nonlinear effects in plasmonic structures: second-harmonic generation in metal-insulator-metal waveguides and self-focusing of plasmons propagating along an interface between metal and Kerr-type nonlinear dielectric with the formation of spatial plasmon-polariton solitons.
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