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Proceedings Paper

Fast response wavelength tunable filter using Vertically-Aligned Polymer-Stabilized Liquid Crystals (VA-PSLC) with a curing voltage
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Paper Abstract

We present preliminary experimental results obtained for a Vertically-Aligned Polymer Stabilized Liquid Crystal (VA-PSLC) with a curing voltage. The curing voltage was found to help reduce the otherwise strong scattering effect of the VA-PSLC. This liquid crystal was placed inside a Fabry-Perot cavity to achieve a wavelength tunable filter. Wavelength tuning range was found to decrease as curing voltage increased, which is consistent with what we expected since molecules were already tilted at a large angle when the curing voltage was high. Shortening of response time was found since the polymer effect helped improve the response speed. The filters can have potential applications in wavelength tuning applications (e.g. WDM) in telecommunication systems where high speed is desirable.

Paper Details

Date Published: 7 October 2014
PDF: 6 pages
Proc. SPIE 9182, Liquid Crystals XVIII, 91821G (7 October 2014); doi: 10.1117/12.2063101
Show Author Affiliations
Wing-Kit Choi, National Taiwan Univ. (Taiwan)
Yan-Min Li, National Taiwan Univ. (Taiwan)

Published in SPIE Proceedings Vol. 9182:
Liquid Crystals XVIII
Iam Choon Khoo, Editor(s)

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