论文部分内容阅读
基于光线追迹的方法建立了典型锥形多模光纤的传输模型,结合激光干扰设备激光的特点,模拟计算了激光在锥形多模光纤中的耦合效率和传输模式,并设计进行了光学实验。仿真和实验结果表明:高斯激光光斑经锥形多模光纤传输后为圆环形光斑;耦合效率随激光入射角的增大而减小,减小的速率随入射角的增大而减小。为解决圆环形光斑分布,提出了将输出端连接的圆柱形光纤弯曲一定角度的方法,该方法可以将光斑改善为二维正态分布的光斑,理论耦合效率近80%。该研究为激光干扰设备的干扰激光直接介入激光制导武器对抗半实物仿真系统提供了理论和实验支持。
Based on the ray tracing method, the transmission model of a typical tapered multimode fiber is established. The coupling efficiency and transmission mode of the laser in a tapered multimode fiber are simulated and the optical experiments are designed based on the characteristics of laser interfering laser equipment. . Simulation and experimental results show that the Gaussian laser spot is a ring-shaped spot after being transmitted through the tapered multimode fiber. The coupling efficiency decreases with the increase of laser incident angle, and the decreasing rate decreases with the incident angle. In order to solve the annular spot distribution, a method of bending a cylindrical optical fiber connected to an output end to a certain angle is proposed. The method can improve the spot to a two-dimensional normal distribution spot, and the theoretical coupling efficiency is nearly 80%. The research provides theoretical and experimental support for the interference of laser interfering devices with the direct laser-guided laser weapon against semi-physical simulation system.