| 基于侧边抛磨光纤传感器的混合液晶薄膜光折变特性研究 |
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| 引用本文： | 李小庆,陈哲,余健辉,杜垚. 基于侧边抛磨光纤传感器的混合液晶薄膜光折变特性研究[J]. 应用光学, 2011, 32(1) |
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| 作者姓名： | 李小庆 陈哲 余健辉 杜垚 |
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| 作者单位： | 1. 暨南大学,光电工程系,广东,广州,510632
2. 暨南大学,光电工程系,广东,广州,510632;光电信息与传感技术广东普通高校重点实验室(暨南大学),广东,广州,510632 |
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| 摘 要： | 利用侧边抛磨光纤(SPF)传感器抛磨区对外界折射率敏感的特性,研究了混合有偶氮苯(AZO)和手征材料(ZLI811)的液晶混合物薄膜在紫外光照射下产生的光折变效应.将液晶、AZO 和 ZLI811 等 3 种材料的混合物涂覆在经过标定的 SPF 传感器的抛磨区上,制备成混合物薄膜.用 UV 光照射光敏薄膜导致 SPF 中传输光功率改变.实验表明:混合物薄膜在 UV 光照射下有光敏特性,会产生折射率变化,其折射率从1.474 变到1.470.这表明此光敏薄膜材料是负光折变材料.这种光敏薄膜材料可应用于制作新型全光纤光控器件和传感器.
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| 关 键 词： | 侧边抛磨光纤 光折变效应 光敏薄膜 光泵浦 |
Photorefractive properties of liquid crystal hybrid thin film based on side polished fiber sensor |
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| LI Xiao-qing,CHEN Zhe,YU Jian-hui,DU Yao. Photorefractive properties of liquid crystal hybrid thin film based on side polished fiber sensor[J]. Journal of Applied Optics, 2011, 32(1) |
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| Authors: | LI Xiao-qing CHEN Zhe YU Jian-hui DU Yao |
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| Affiliation: | LI Xiao-qing1,CHEN Zhe1,2,YU Jian-hui1,DU Yao1(1.Department of Optoelectronic Engineering,Jinan University,Guangzhou 510632,China,2.Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Educational Institutes,China) |
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| Abstract: | Using the property of side polished fiber(SPF) sensor's polishing area sensitive to external refractive index,the photorefractive effect of liquid crystal hybrid film mixed with Azobenzene(AZO) and ZLI811 was studied under UV light pumping.The mixture composed of liquid crystal,AZO,and ZLI811 was coated on the polishing area after the SPF was calibrated,and the hybrid film was prepared.The transmission optical power in the SPF changes when photosensitive film is UV irradiated.Experiment shows that the photo... |
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| Keywords: | side polished fiber photorefractive effect photosensitive film optical pumping |
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