Liang Zhongcheng, Ding Wenxuan, Zhao Rui, Huang Yayan, Kong Meimei, Chen Tao
The Microfluidic Optical Technology Research Center, School of Electronic and Optical Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China.
Langmuir. 2021 Jan 19;37(2):769-773. doi: 10.1021/acs.langmuir.0c03064. Epub 2021 Jan 5.
In this paper, an optofluidic phase modulator based on dielectrowetting is designed and fabricated to adjust the optical phase. Two liquids are filled in the device, and a transparent sheet is employed at the liquid interface to keep the interface flat. When different voltages are applied to the modulator, the flat interface moves up and down, leading to the variation of the optical phase. A theoretical model is constructed to predict the optical phase shift quantitatively, and the phase regulation ability is also tested experimentally. Our modulator realizes continuous adjustment of the optical phase in a certain range by the operation of voltage adjustment. When the voltage is increased to 150 V, the optical phase modulation range of our proposed modulator can reach 9.366 π.
本文设计并制作了一种基于介电润湿的光流体相位调制器来调节光相位。该装置中填充了两种液体，在液体界面处使用了一张透明薄片以保持界面平整。当向调制器施加不同电压时，平整的界面会上下移动，从而导致光相位的变化。构建了一个理论模型来定量预测光相移，并通过实验测试了相位调节能力。我们的调制器通过电压调节操作在一定范围内实现了光相位的连续调节。当电压增加到150V时，我们所提出的调制器的光相位调制范围可达9.366π。
