发表机构
State Key Laboratory of Quantum Optics Technologies and Devices, Institute of Opto-Electronics, Shanxi University; College of Physics and Electronic Engineering, Shanxi University; Collaborative Innovation Center of Extreme Optics, Shanxi University; Beijing Xicheng Photonics Techlonogy Co.,Ltd.; ZTE Photonics Technology Co., Ltd.; ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University（山西大学光电研究所量子光学技术与器件国家重点实验室; 山西大学物理电子工程学院; 山西大学极端光学协同创新中心; 北京西城光子科技有限公司; 中兴光子技术有限公司; 浙江大学浙大杭州全球科创中心）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究针对片上偏振控制器依赖传统盲搜索方法的问题，提出基于四个移相器和光计算的解析式偏振控制方法，经模拟验证可补偿相位差、实现全轴旋转，结合FPGA加速可得到高速片上偏振控制器。
AI 中文摘要
动态偏振控制器是在众多领域具有广泛应用的关键器件。然而，大多数片上偏振控制器仍依赖传统的盲搜索方法，而解析式光计算方法，尤其是在校准和无限偏振控制方面，仍未得到充分探索。鉴于马赫-曾德尔干涉仪（MZI）的相对相位可在集成光子芯片上实现完全可控，我们提出了一种采用四个移相器和光计算的解析式偏振控制（APC）方法，消除了传统低效的盲搜索过程。我们阐明了APC的基本结构与操作，所提出的校准方法和无限控制方法可实现连续APC，同时补偿MZI结构内的相位差。我们模拟了无限控制单元对偏振控制的影响，并量化了第四个相位差对输出消光比的作用。借助第四个移相器，斯托克斯矢量测量过程中遇到的相位差可得到有效补偿，且能实现庞加莱球上所有三个轴的旋转。这些结果构建了一种基于光计算的实用光子芯片APC架构。所提出的APC方法与基于FPGA的硬件加速相结合，将实现高速片上偏振控制器。
英文摘要
Dynamic polarization controllers are key devices with broad applications in many fields. However, most on-chip polarization controllers still rely on traditional blind-search methods, whereas analytical optical-computing approaches remain insufficiently explored, particularly with respect to calibration and endless polarization control. With the accurate relative phase of Mach-Zehnder interferometer (MZI) being fully controllable on an integrated photonics chip, we present an analytical polarization control (APC) method using four phase shifters and optical computing, eliminating the need for the traditional inefficient blind-search procedure. The basic structures and operations of APC are clarified. The proposed calibration method and endless control method enable continuous APC while compensating for phase differences within the MZI structures. We simulate the influence of the endless control unit on polarization control and quantify the effect of the fourth phase difference on the output extinction ratio. With the fourth phase shifter, the phase difference encountered during Stokes vector measurement can be effectively compensated, and rotations around all three axes on the Poincaré sphere can be realized. These results establish a practical APC architecture based on optical computing for photonics chips. The proposed APC methods, combined with a FPGA-based hardware acceleration, will enable high speed on-chip polarization controllers.
