Temperature-Dependent Coupling Effect in Nematic Liquid Crystal Multiguide
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概要
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The authors propose an experimental observation of the temperature-dependent coupling effect in a nematic liquid crystal (NLC) multiguide. A grating like electrode is fabricated with indium-tin-oxide in the NLC device. With the application of a voltage of 5.4 V, an optical multiguide structure is formed owing to the periodic orientation of liquid crystal molecules, induced by a grating like distributed electric field. A linearly polarized beam of 532 nm is launched into one certain channel and coupled to adjacent ones. Note that the coupling effect significantly depends on temperature. Additionally, we also observe a clear nonlinear light self-focusing phenomenon at a low light power of 15 μW.
- 2009-10-25
著者
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Tsai Ming-shan
Department Of Physics National Cheng Kung University
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Huang Shuan-Yu
School of Optometry, Chung Shan Medical University, No. 110, Sec. 1, Jianguo N. Rd., Taichung, Taiwan 402, Republic of China
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Hung Wen-Chi
Department of Physics, National Sun Yat-sen University, Kaohsiung, Taiwan 804, Republic of China
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Kuo Chie-Tong
Department of Physics and Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, 70 Lien-hai Rd. Kaohsiung 804, Taiwan, R.O.C.
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Kuo Chie-Tong
Department of Physics, National Sun Yat-sen University, Kaohsiung, Taiwan 804, Republic of China
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Tsai Ming-Shan
Department of Applied Physics, National Chiayi University, Chiayi, Taiwan 600, Republic of China
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