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

Wing-Kit Choi; Yan-Min Li

doi:10.1117/12.2063101

7 October 2014 Fast response wavelength tunable filter using Vertically-Aligned Polymer-Stabilized Liquid Crystals (VA-PSLC) with a curing voltage

Wing-Kit Choi, Yan-Min Li

Author Affiliations +

Proceedings Volume 9182, Liquid Crystals XVIII; 91821G (2014) https://doi.org/10.1117/12.2063101
Event: SPIE Organic Photonics + Electronics, 2014, San Diego, California, United States

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.

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Wing-Kit Choi and Yan-Min Li "Fast response wavelength tunable filter using Vertically-Aligned Polymer-Stabilized Liquid Crystals (VA-PSLC) with a curing voltage", Proc. SPIE 9182, Liquid Crystals XVIII, 91821G (7 October 2014); https://doi.org/10.1117/12.2063101

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