Optical forces and trapping potentials of a dual-waveguide trap based on multimode solid-core waveguidesM. M. van Leest, F. Bernal Arango and J. CaroJ. Eur. Opt. Soc.-Rapid Publ., 6 (2011) 11022DOI: https://doi.org/10.2971/jeos.2011.11022