Abbreviated Journal Title
Opt. Express
Keywords
LIGHT MODULATORS; SCATTERING; Optics
Abstract
A variable optical attenuator (VOA) based on polymer stabilized twisted nematic (PSTN) liquid crystal (LC) is demonstrated. Comparing with the normal twisted nematic LC-based VOA, PSTN exhibits a much faster response time. Moreover, the polymer networks effectively eliminate the backflow effect which exists in the normal TNLC cell. The attenuation mechanism of the PSTN LC was studied. Both polarization rotation and light scattering effects are found to contribute to the optical attenuation. The ratio between these two mechanisms can be adjusted by changing the polymer concentration and polymer network domain size.
Journal Title
Optics Express
Volume
12
Issue/Number
7
Publication Date
1-1-2004
Document Type
Article
Language
English
First Page
1221
Last Page
1227
WOS Identifier
ISSN
1094-4087
Recommended Citation
Lu, Yan-qing; Du, Fang; Lin, Yi-Hsin; and Wu, Shin-Tson, "Variable optical attenuator based on polymer stabilized twisted nematic liquid crystal" (2004). Faculty Bibliography 2000s. 4562.
https://stars.library.ucf.edu/facultybib2000/4562
Comments
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