Waveguide structures for efficient evanescent field coupling to zero mode waveguidesM. Sarkar, A. J. H. Wachters, H. P. Urbach, J. J. H. B. Schleipen, P. J. van der Zaag and R. Wimberger-FriedlJ. Eur. Opt. Soc.-Rapid Publ., 9 (2014) 14019DOI: https://doi.org/10.2971/jeos.2014.14019