The UV-reaction molding technology enabling for the fabrication of microopt
ical elements with rectangular, triangular or circular cross-sections (wave
guides, prisms, lenses) in optical polymers is described. Multimode wavegui
de optical interconnects, coupling prisms and holding structures for fibers
can be fabricated in one step. A three-dimensional monomode waveguide inte
rconnection module is presented. Stability tests of the microoptical elemen
ts are reported. (C) 2001 Elsevier Science Ltd. All rights reserved.