Switchable Fresnel zone lenses for optical interconnections

Margit Ferstl; Anna-Maria Frisch

doi:10.1117/12.251243

23 September 1996 Switchable Fresnel zone lenses for optical interconnections

Margit Ferstl, Anna-Maria Frisch

Proceedings Volume 2881, Microelectronic Structures and MEMS for Optical Processing II; (1996) https://doi.org/10.1117/12.251243
Event: Micromachining and Microfabrication '96, 1996, Austin, TX, United States

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.

Citation Download Citation

Margit Ferstl and Anna-Maria Frisch "Switchable Fresnel zone lenses for optical interconnections", Proc. SPIE 2881, Microelectronic Structures and MEMS for Optical Processing II, (23 September 1996); https://doi.org/10.1117/12.251243

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