J. Jahns "Anwendungsbeispiele für die planare Optik" DGaO-Tagung, Berchtesgarden, 1994.

J. Jahns, "Tolerant design of planar optical interconnections" (invited) OSA Top. Meeting on Optical Design, Rochester, USA, 1994.

S. Sinzinger, M. Testorf, W. Singer, "The Transition between Diffractive and Refractive Microoptical Components" OSA Top. Meeting on Optical Design, Rochester, USA, 1994.

J. Jahns, "Planar Optics" (invited) Israeli-German Symp. "Optical Inf Proc.", Tel Aviv, Israel, 1994.