Reply: Foundations of the composite diffracted evanescent wave model

The purpose of the paper that has elicited the above comment was to test the specific predictions of the composite diffracted evanescent wave (CDEW) model2 of optical response to subwavelength structures and thereby assess the model's validity. These tests were carried out by measurements of the optical response of very simple one-dimensional subwavelength slit–groove structures milled in a silver film. The essential surface-wave properties of amplitude, wavelength and phase at the silver–air interface as a function of slit–groove distance were measured by detecting transmitted interference fringes in the far-field.