Abstract

Recently, planar optics was introduced as a concept for the micro integration of free space optics¹. For the planar optics approach passive optical elements are arranged on the surface of a thick transparent substrate. The light signal travels within the substrate along a folded zigzag path, reflected at the surfaces of the substrate. Since planar optics was first proposed, various applications were successfully demonstrated, like integrated split and shift modules² or integrated optical imaging systems³.

© 1996 Optical Society of America