[IEEE 2007 the Joint International Conference on Optical Internet (COIN) and Australian Conference on Optical Fibre Technology (ACOFT) - Melbourne, Australia (2007.06.24-2007.06.27)] COIN-ACOFT 2007 - Joint International Conference on the Optical Internet and the 32nd Australian Conference on Optical Fibre Technology - Effects of the coating in single-mode slab waveguide with varying curvature: a new approach to understanding bend loss