Author Affiliations

G. R. Möhlmann,¹ W. H. G. Horsthuis,¹ A. Mc. Donach,^1,* M. J. Copeland,^1,* C. Duchet,^1,† P. Fabre,^1,† M. B. J. Diemeeer,^1,‡ E. S. Trommel,^1,‡ F. M. M. Suyten,^1,‡ E. Van Tomme,^1,¶ P. Baguero,^1,¶ and P. Van Daele^1,¶

¹AKZO Research Labs Arnhem, Corporate Research, Applied Physics Department, P. O. Box 9300, 6800 AB Arnhem, The Netherlands

^*Barr & Stroud Ltd., Guided Wave Optics Department, Caxton Street, Glasgow G131HZ, UK.

^†Laboratoires des Marcoussis, Centre de Recherche de la CGE, Route de Nozay, 91460 Marcoussis, France.

^‡PTT Research Neher Laboratories, P. O. Box 421,2260 AK Leidschendam, The Netherlands.

^¶University of Ghent/IMEC, Laboratory of Electromagnetics and Acoustics, St. Pietersnieuwstraat 41, B-9000 Ghent, Belgium.