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中文摘要：
利用电控改变固液界面湿润角的电润湿微棱镜（EMPs）技术以及双自聚焦透镜组合设计了一类新颖的可调光衰减器,并对该衰减器的衰减性能进行了原理分析和实验测量.理论分析和实验结果表明其具有良好的光衰减控制效应,在不大的电压变化范围（例如135—139V）内即可实现2—60dB的光衰减范围.该器件构思新颖,具有结构简单、容易制作的优点,经过优化后将会在光通信领域得到广泛的应用.缺点是工作电压偏高,需要进一步筛选出介电系数高的物质来作为介电绝缘层材料,以便降低工作电压,达到实际可以使用的目的.
英文摘要：
A novel variable fiber optical attenuator （VFOA） using an electrowetting microprisms （EMPs） and and two selffocusing lenses is proposed .EMPs can change the wetting angle of solid-liquid interface technology by electronic control methods.The attenuation of the VFOA is analyzed by the theory and experimental measurements .Theoretical analysis and experimental results show that a good control effect of light attenuation in the small voltage range （such as 135—139 V）,and the optical attenuation range can achieve in 2—60 dB.With the merits of novel conception,easy production,low cost and simple structure,the device will be widely used in communications fields after the optimized design.Disadvantage of this device is high voltage,in order to reduce the operating voltage to achieve the purpose of actual use,screening of high dielectric constant material as the dielectric layer material is topic of future research.
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