全矢量偏振信息在复杂分散体系中传输特性及其直接探测技术研究

In order to overcome the transmitting and detecting problems in the field of polarization information processing, we propose the investigations of the polarization retrieve and reconstruction of the original polarization information transmitted in complex disperse media and the design of novel full-Stokes-vector polarization detector. We will investigate the physical mechanisms of the influence factors of atmospheric environment to the target detection, by studying the absorption and the scattering processes from the particles of the complex dispersive system to the incident photons. With the method of Monte-Carlo simulation, we will build the special Muller matrix of the corresponding complex dispersive system, and also try to search the universal Muller matrix for the special complex dispersive system. Establish a novel polarization retrieve method for realizing the accurate reconstruction of polarization information in the complex dispersive system, thus make sure the transmitted polarization information can be detected accurately. Meanwhile, based on the nanophotonics, we propose a combined Archimedes’ structures and an optimized metasurface structure of Au split-ring resonator array for detecting the “V” component of the Stokes vector directly. A novel full-Stokes-vector detecting device based on Four-division of a pixel will be designed and established, which can be used for directly detecting full Stokes vectors easily we will also investigate the calibration system for the designed detector, and make it be practical, which can provide a novel technological means for ground and space target detection.

本课题针对当前偏振信息处理领域所面临的传输及探测问题，我们提出研究“在复杂分散体系中传输的偏振信息的恢复重建”及“新型全斯托克斯矢量偏振探测设备的设计”。通过研究复杂分散体系对光信号的吸收、散射等过程，给出这些相互作用过程对于在其中传输的偏振信息影响的物理机制。基于蒙特卡洛算法,建立与分散体系相对应的穆勒矩阵，并且针对特定分散体系，搜寻相对应的普适穆勒矩阵。建立偏振信息恢复的新方法,实现对原始偏振信息的精确反演重建，从而确保对传输的原始偏振信息的正确探测与感知。同时，基于纳米光子学手段，我们提出使用多阿基米德螺旋复合结构设计，及基于优化的金开口共振环阵列实现圆偏振光高效分析，得以直接探测Stokes矢量V分量。实现四分像元全矢量偏振信息探测设备的优化设计，实现对全斯托克斯矢量的直接探测，研究该全矢量偏振信息探测设备的定标体系，使其真正实用化,从而为地面目标、空间目标探测提供新技术和新手段。

本研究主要围绕偏振信息处理及偏振信息探测这两个方面的研究内容。借助于蒙特卡洛数值算法，提出一种偏振信息恢复算法，可以降低分散介质对在复杂分散体系中传输的偏振信息的影响；同时我们提出使用复合阿基米德螺旋透镜及优化超表面结构的研究方案，实现左右旋圆偏振光的同时、直接探测，这为全偏振矢量直接探测装备提供较有意义的设计方案。这一系列的研究结果对于偏振信息在通信、导航、探测等领域的实际应用推广具有重大的意义。在本一年期研究项目的资助下，我们共发表了12篇SCI检索期刊论文，圆满完成一年期的科研任务。