Optical filters with prescribed optical thickness and refined refractive indices.
We propose to refine the refractive index of the layers composing optical filters while keeping their optical thicknesses constant. Using this technique, one can optimize filters made of quarter-wave layers using conventional optimization techniques, while preserving the possibility to use turning-point monitoring during their fabrication. Application of this method to the design of a dual narrowband filter and a tilted edge filter demonstrates its effectiveness.
Larouche
Stéphane
S
Regroupement Québécois sur les Matériaux de Pointe and Department of Engineering Physics, Ecole polytechnique de Montréal, P.O. Box 6079, Station Centre-Ville, Montréal, Québec, H3C 3A7, Canada. stephane.larouche@polymtl.ca
Martinu
Ludvik
L