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Proceedings Paper

Switchable Fresnel zone lenses for optical interconnections
Author(s): Margit Ferstl; Anna-Maria Frisch
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Paper Abstract

Various on-axis and off-axis Fresnel zone lenses with different focal lengths and of different apertures were fabricated in quartz glass by means of microstructuring techniques. The kinoform profile of the diffractive optical elements was approximated by a staircase-like profile having a number of discrete phase levels. Dynamic, that is electrically switchable, lenses have been realized by filling the structured surface with liquid crystal. By applying an AC-voltage the elements can be switched from the state of a `focusing lens' to that of a `transparent glass- plate'. The optical properties of the lenses as well as the switching behavior were studied. Experimental measurements will be compared with theoretical results.

Paper Details

Date Published: 23 September 1996
PDF: 7 pages
Proc. SPIE 2881, Microelectronic Structures and MEMS for Optical Processing II, (23 September 1996); doi: 10.1117/12.251243
Show Author Affiliations
Margit Ferstl, Heinrich-Hertz-Institut fuer Nachrichtentechnik Berlin GmbH (Germany)
Anna-Maria Frisch, Technische Univ. Berlin (Germany)

Published in SPIE Proceedings Vol. 2881:
Microelectronic Structures and MEMS for Optical Processing II
M. Edward Motamedi; Wayne Bailey, Editor(s)

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