title: Efficient implementation of B-spline modal method for lamellar gratings.
abstract: The B-spline modal method (BMM) as applied to lamellar gratings analysis is revisited, and a new implementation is presented. The main difference with our previous work is that we now take into account discontinuities by putting a spline with a degenerate knot on them. Our new approach is compared with other implementations of the BMM and is shown to be superior in terms of numerical convergence.
authors.forename: Gérard
authors.initials: G
authors.lastname: Granet