Polarization conversion by dielectric subwavelength gratings in conical mountingNicolas Passilly, Petri Karvinen, Kalle Ventola, Pasi Laakkonen, Jari Turunen and Jani TervoJ. Eur. Opt. Soc.-Rapid Publ., 3 (2008) 08009DOI: https://doi.org/10.2971/jeos.2008.08009