Total-Reflection Switch Using High-Tilt-Angle Cholesteric : Smectic C^* Phase Transition Ferroelectric Liquid Crystal
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概要
- 論文の詳細を見る
A total internal reflection (TIR) microoptic switch using high-tilt-angle materials showing cholesteric-smectic C^* phase transition for multimode fiber is described. The device shows excellent temperature-independent electrooptic characteristics and exploits the maximum contribution of ferroelectric liquid crystal (FLC) birefringence. The switch shows asymmetric response and unusual nonlinear behaviour, which is analysed by polarisation reversal current. The nonlinear response is due to the polar surface interaction which behaves as if it were positively charged and has been analysed by the transmission characteristics and by current analysis on applying square and triangular waves of various frequencies. The switch has a switching response of 〜20 ms limited due to monostable surface conditions, and shows a beam attenuation of 〜5×10^7 in the off state.
- 社団法人応用物理学会の論文
- 1991-10-15
著者
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Chandra S
National Physical Lab. New Delhi Ind
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CHANDRA Subhas
National Physical Labortory
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Biradar A
National Physical Laboratory
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Bawa Sukhwant
National Physical Laboratory
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Chandra Subhas
National Physical Laboratory
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BIRADAR Ashok
National Physical Laboratory
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SHARMA Chhatra
National Physical Laboratory
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- Total-Reflection Switch Using High-Tilt-Angle Cholesteric : Smectic C^* Phase Transition Ferroelectric Liquid Crystal
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