Controlling Surface Plasmon Optical Transmission by Stretching a Silver-Coated Elastomeric Grating Substrate

in this study, transmission surface plasmon resonance (tspr) of a silver-coated elastomeric grating substrate was tuned via mechanical stretching. the wavelengths of tspr excitation peaks, corresponding to surface plasmon dispersion modes of + 1 and − 1, were simultaneously observed. the tspr excitation wavelength was dramatically shifted up to 80 nm when the strain of the substrate reached 13.3%. the fine control of tspr properties of the silver-coated elastomeric grating substrate has potential applications in mechanically tunable band pass filters, optical sensors, etc.