铁电液晶光电特性的电路级分析

建立了铁电液晶的Spice等效电路模型,并基于此模型,分析了温度、光波长以及电压频率3个典型参量对铁电液晶光电响应特性的影响.仿真结果表明,以上3个参量的变化对铁电液晶光电响应有明显的控制作用,该结果与Matlab数值分析结果以及实验结果相符.

Circuit-Level Analysis on Opto-Electronic Characteristics of Ferroelectric Liquid Crystal

We propose an electronic model in Spice,instead of traditional mathematical analysis,for analyzing the performance of ferroelectric liquid crystal (FLC) under various working conditions. Using this equivalent circuit model,it is easy to simulate and analyze the behavior of an FLC layer in three different typical parameters,including temperature,input light wavelength, and the frequency of driving voltage. We conclude that the response velocity drops as the wavelength increases in the range of visible light, and for the parameter of temperature, the velocity reaches its lowest value when the temperature reaches a certain degree;meanwhile, the frequency of driving voltage exerts important effects on the response velocity only when the frequency is beyond a critical value. Excellent agreement is achieved between simulation and experimental results.