Optical switch based on variable aperture

Optics Letters
Hongwen RenShin-Tson Wu

Abstract

We report on a pixel whose aperture can be varied electrically. The pixel is confined by a hole-patterned polymer wall and a dielectric liquid forms a ring shape around the wall surface. Without an electric field, the pixel has the largest aperture. The applied fringing field stretches the liquid surface, leading to a decrease in the aperture size. The switchable aperture ratio of the pixel is over 80% and the response time is ~10 ms. Such a device is useful for an optical attenuator, a light shutter, an adaptive iris, and an information display.

References

Sep 26, 2003·Nature·Robert A Hayes, B J Feenstra
Mar 3, 2007·Lab on a Chip·Nicolas DemierrePhilippe Renaud
Sep 17, 2008·Optics Express·Hongwen RenShin-Tson Wu
Jun 11, 2007·Optics Express·Chih-Cheng Cheng, J Andrew Yeh
Jul 17, 2010·Optics Letters·C Gary Tsai, J Andrew Yeh
Nov 18, 2010·Optics Letters·Hongwen Ren, Shin-Tson Wu
Sep 9, 2011·Lab on a Chip·Hongwen RenShin-Tson Wu

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Citations

May 4, 2016·Optics Express·Ryan D MontoyaJuliet T Gopinath
Feb 6, 2013·Optics Letters·Lei LiQiong-Hua Wang
Aug 18, 2018·Applied Optics·Chao Liu, Di Wang
May 15, 2015·Applied Optics·Chao LiuQiong-Hua Wang
Feb 28, 2015·Optics Letters·Miao XuYi-Hsin Lin

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