可扩展低延迟光学相位传感器阵列
Scalable Low-latency Optical Phase Sensor Array
AI总结：
针对传统光学相位测量的诸多缺陷，提出基于集成光子学的紧凑型相位传感器阵列，结合图结构连接、高效后处理算法及电路设计规则，实现无参考的准确可扩展低延迟相位传感，经仿真和实验验证，可为相关应用带来显著优势。
摘要：
光学相位测量对诸多应用至关重要，而传统方法常存在机械不稳定、时间延迟及计算复杂度高的问题。本文提出了基于集成光子学的紧凑型相位传感器阵列，该阵列仅需少量测量步骤即可实现准确、可扩展的无参考相位传感。其实现原理是将多个双端口相位传感器连接成图结构，以测量相邻及远距离空间位置之间的相对相位。我们提出了一种高效的后处理算法，以及用于减少随机误差和偏差误差累积的电路设计规则。我们通过仿真和光子集成电路实验验证了系统的有效性。所提出的系统可直接测量光学相位，无需外部参考或空间光调制器，因此为显微镜成像、光学相控阵等应用带来显著优势。
英文摘要：
Optical phase measurement is critical for many applications and traditional approaches often suffer from mechanical instability, temporal latency, and computational complexity. In this paper, we describe compact phase sensor arrays based on integrated photonics, which enable accurate and scalable reference-free phase sensing in a few measurement steps. This is achieved by connecting multiple two-port phase sensors into a graph to measure relative phases between neighboring and distant spatial locations. We propose an efficient post-processing algorithm, as well as circuit design rules to reduce random and biased error accumulations. We demonstrate the effectiveness of our system in both simulations and experiments with photonic integrated circuits. The proposed system measures the optical phase directly without the need for external references or spatial light modulators, thus providing significant benefits for applications including microscope imaging and optical phased arrays.
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