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使用Si-光子波导网格合器进行光学波面相位倾斜测量

S Janz, D X Xu, Y Grinberg

|December 1, 2023

概括

光子传感器使用网格阵列来监测波面倾斜和相位. 这些紧的传感器为通信和天文学中的自适应光学提供了高灵敏度.

科学领域:

光子学和光学工程的工程.
适应光学系统适应光学系统

背景情况:

波面监测对于自适应光学 (AO) 系统至关重要.
现有的波面传感器通常依赖于重的光学元件.

研究的目的:

为了演示光子传感器用于波面相位和倾斜监测.
为AO应用开发紧的基于芯片的传感器元件.

主要方法:

在光子芯片上使用表面合格子阵列.
采用格子合效率的角度依赖性来进行倾斜感应 (灵敏度为7dB/°).
在干扰计波导电路中集成网格,以测量相变量 (每个边缘倾斜2°).

主要成果:

展示了具有高灵敏度的光子波面相位倾斜传感器.
实现了适用于大型阵列的紧型传感器元件 (<60微米).
消除了批量光学,光纤阵列或成像阵列的需求.

结论:

这些光子传感器是有效的波面监测.
它们适合作为AO系统中大规模波纹传感的单元电池.
潜在的应用包括自由空间光学通信,天文学和光束指向.

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