Abstract

In photonic systems the free space light beams for the interconnection of arrays are the important elements. Projective geometry deals with elements which are invariant with respect to the projection. These elements are points, lines and planes. The motivation for the ongoing work in this field is the systematic and efficient design of photonic systems on the process and algorithm level. For this purpose (amongst others) ideas are applied which have been suggested already one century ago by F. Klein (Erlanger Programm), J. Pfluecker and H. Grassmann.¹

© 1991 Optical Society of America