Wu Chong-Yin, Zou Yi-Hong, Timofeev Ivan, Lin Yu-Ting, Zyryanov Victor Ya, Hsu Jy-Shan, Lee Wei
Department of Physics, Chung Yuan Christian University, Chung-Li, 32023 Taiwan.
Opt Express. 2011 Apr 11;19(8):7349-55. doi: 10.1364/OE.19.007349.
We investigated the optical properties of a one-dimensional photonic crystal infiltrated with a bistable chiral tilted homeotropic nematic liquid crystal as the central defect layer. By modulating the nematic director orientation with applied voltage, the electrical tunability of the defect modes was observed in the transmission spectrum. The composite not only is a general tunable device but also involves the green concept in that it can operate in two stable states at 0 V. Under the parallel-polarizer scheme, the spectral characteristics suggest a potential application for this device as an energy-efficient multichannel optical switch.
我们研究了一种一维光子晶体的光学特性，该光子晶体以双稳态手性倾斜垂直排列向列相液晶作为中心缺陷层。通过施加电压调制向列相指向矢的方向，在透射光谱中观察到了缺陷模式的电可调性。这种复合材料不仅是一种通用的可调谐器件，而且还涉及绿色概念，因为它可以在0 V下以两种稳定状态工作。在平行偏振器方案下，光谱特性表明该器件作为一种节能多通道光开关具有潜在的应用价值。
