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Proceedings Paper

Study of photorefractive properties of liquid crystal hybrid thin film by side polished fiber sensor
Author(s): Jianhui Yu; Xiaoqing Li; Yao Du; Jun Zhang; Zhe Chen
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Paper Abstract

Using a side polished standard fiber (SPF) as a sensor which is very sensitive to external refractive index, liquid crystal hybrid film mixed with Azobenzene(AZO) and ZLI811 is overlay on the polished region of the SPF, and the photorefractive effect of the film with UV light irradiation is studied. The mixture composed of liquid crystal, AZO, and ZLI811 was coated on the polishing area after the SPF was calibrated. The optical power transmission of the SPF changes when the photosensitive film on the SPF is under UV irradiation. Through curve of optical power transmission which functions as refractive index, refractive index change of liquid crystal hybrid film is measured. Our experimental result shows that the photosensitive thin film is a negative photosensitive material, and the refractive index changes from 1.474 to 1.470 under UV light irradiation. This photosensitive film material can be potentially used to create a new all-fiber optical-controllable components and sensors.

Paper Details

Date Published: 30 January 2012
PDF: 7 pages
Proc. SPIE 8351, Third Asia Pacific Optical Sensors Conference, 835122 (30 January 2012); doi: 10.1117/12.914379
Show Author Affiliations
Jianhui Yu, Jinan Univ. (China)
Xiaoqing Li, Jinan Univ. (China)
Yao Du, Jinan Univ. (China)
Jun Zhang, Jinan Univ. (China)
Zhe Chen, Jinan Univ. (China)

Published in SPIE Proceedings Vol. 8351:
Third Asia Pacific Optical Sensors Conference
John Canning; Gangding Peng, Editor(s)

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