论文部分内容阅读
为了满足红外成像导引头对半实物仿真目标模拟器高温、高动态范围、高分辨率等性能的要求,基于一维光子晶体带宽窄、消光比高、可实现较高的动态范围等特点,提出了一种新型一维光子晶体红外空间光调制器,并对一维光子晶体的光学传输特性进行了理论分析和仿真。重点分析了透射率与归一化频率的关系,层数、周期光程和折射率的变化对禁带的影响,并对含中心缺陷层的一维光子晶体的光学传输特性进行了理论分析和仿真。计算结果对该技术的可行性提供了理论支撑。
In order to meet the performance requirements of high-temperature, high dynamic range and high resolution of the semi-physical simulation target simulator for infrared imaging seeker, based on the narrow bandwidth of one-dimensional photonic crystal, high extinction ratio and high dynamic range, A new one-dimensional photonic crystal infrared spatial light modulator is proposed. The optical transmission characteristics of one-dimensional photonic crystal are theoretically analyzed and simulated. The relationship between transmittance and normalized frequency, the influence of layer number, periodic optical path length and refractive index on the forbidden band were analyzed emphatically, and the optical transmission characteristics of one-dimensional photonic crystal with central defect layer were analyzed theoretically. simulation. The results provide theoretical support for the feasibility of the technique.