Abstract
Periodic structures exhibit an effect known as self-imaging[1-3]. The complex, amplitude distribution of the field, u(x,y,z) is self-similar such that, u(x,y,z) = u(x,y,z + Ls). Here we address self-imaging by use of transverse gratings which extend throughout the entire waveguide (Figure 1). By use of photolithographic techniques in photopolymers, one has a simple means to match waves having dissimilar propagation constants without much loss.
© 1997 Optical Society of America
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