Optical security device for document protection using plasmon resonant transmission through a thin corrugated metallic film embedded in a plastic foilJ. Sauvage-Vincent, S. Tonchev, C. Veillas, S. Reynaud and Y. JourlinJ. Eur. Opt. Soc.-Rapid Publ., 8 (2013) 13015DOI: https://doi.org/10.2971/jeos.2013.13015