title: Inverse scattering designs of dispersion-engineered planar waveguides.
abstract: We have introduced a semi-analytical IS technique suitable for multipole, rational function reflection coefficients, and used it for the design of dispersion-engineered planar waveguides. The technique is used to derive extensive dispersion maps, including higher dispersion coefficients, corresponding to three-, five- and seven-pole reflection coefficients. It is shown that common features of dispersion-engineered waveguides such as refractive-index trenches, rings and oscillations come naturally from this approach when the magnitude of leaky poles in increased. Increasing the number of poles is shown to offer a small but measureable change in higher order dispersion with designs dominated by a three pole design with a leaky pole pair of the smallest modulus.
authors.forename: Alexander R
authors.initials: AR
authors.lastname: May
authors.forename: Francesco
authors.initials: F
authors.lastname: Poletti
authors.forename: Michalis N
authors.initials: MN
authors.lastname: Zervas