GENERAL-SOLUTION OF THE PROBLEM OF PERFECT GEODESIC LENSES FOR INTEGRATED-OPTICS

被引:41
作者
SOTTINI, S
RUSSO, V
RIGHINI, GC
机构
关键词
D O I
10.1364/JOSA.69.001248
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The problem of designing waveguide geodesic lenses for integrated optical processing is discussed. Geodesic lenses are, at present, the best solution whenever crystals of high refractive index must be used as substrates. A good geodesic lens has to be constituted by a surface of rotation, coupled without discontinuities with the planar optical circuit. A general expression is derived for the profile of aspherical geodesic lenses able to form perfect geometrical images of the points of two given concentric circles on each other. In particular, the equations that characterize a family of lenses having two conjugate foci external to the lens depression are given. The advantage of this analytical method is the clear theoretical approach that allows a large flexibility in the lens design without long expensive computations.
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页码:1248 / 1254
页数:7
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