A temperature-independent filter based on a surface plasmon polariton resonator

Both the size and the refractive index of the materials which form the optical element are influenced by the temperature. So the characteristics of a surface plasmon polariton (SPP) element are always affected by the temperature. In this paper, we show that the deformation can be used to compensate the influence of the temperature. A temperature-independent filter based on SPP resonator is presented and this method can be used to develop novel nano-optical elements in the future.