30 January 2012 Study of photorefractive properties of liquid crystal hybrid thin film by side polished fiber sensor
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Proceedings Volume 8351, Third Asia Pacific Optical Sensors Conference; 835122 (2012) https://doi.org/10.1117/12.914379
Event: Asia Pacific Optical Sensors Conference, 2012, Sydney, Australia
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.
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Jianhui Yu, Xiaoqing Li, Yao Du, Jun Zhang, Zhe Chen, "Study of photorefractive properties of liquid crystal hybrid thin film by side polished fiber sensor", Proc. SPIE 8351, Third Asia Pacific Optical Sensors Conference, 835122 (30 January 2012); doi: 10.1117/12.914379; https://doi.org/10.1117/12.914379
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