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反向设计的超紧的被动相变器用于高性能梁方向

Tianyang Fu^1,2, Mengfan Chu¹, Ke Jin¹

¹State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China.

Sensors (Basel, Switzerland)

|November 9, 2024

概括

研究人员使用多目标粒子群优化开发了超紧的被动相移器. 这些设备使高性能光学相位阵列激光雷达具有很大的光束转向范围.

科学领域:

光子学和光学工程的工程.
纳米技术纳米技术
计算电磁学计算机电磁学

背景情况:

传统的光学相位阵列通常需要复杂的制造和大尺寸的足迹.
在光学系统中,使用紧型设备实现广角光束转向仍然是一个重大挑战.
被动相位变换器是控制光学相位阵列中的光方向的关键组件.

研究的目的:

为光学相位阵列应用设计和演示超紧的被动相位变换器.
研究工程波导的波长依赖的相位转移特征.
将这些相变器与格子发射器集成为光束方向功能.

主要方法:

利用多目标粒子群集优化用于相变器的反向设计.
采用带有随机空气孔阵列的矩形波导,以诱导波长依赖的相差.
制造和特征集成梁转向结构的性能.

主要成果:

在30纳米带宽 (1535-1565纳米) 上实现了6.26rad (TE) 和6.95rad (TM) 的显著相调范围.
与阵列波导网格相比,展示了具有更高传输和更小足迹的相变器.
集成结构的横向扫描范围很大,为±25.47° (TE) 和±27.85° (TM).

结论:

开发的反向设计的被动相变器为超紧的光学系统提供了一个有前途的解决方案.
这项技术有助于开发具有广泛扫描能力的高性能光学相位阵列激光雷达.
该方法为各种光子应用提供了小型化和高效的光束方向装置的途径.

关键词:

灯束转向的方向盘.反向设计的设计.阶段变速器阶段变速器

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