Ultra-compact dynamic OAM generator based on Sb2S3.

Applied optics Pub Date : 2025-09-20 DOI:10.1364/AO.574174
Wenhui Dong, Zifeng Zhang, Zhibo Fang, Rongquan Chen, Ming Chen
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引用次数: 0

Abstract

Integrated photonics is increasingly widely applied in fields such as optical communication and optical micro-operation, especially demonstrating great potential in the dynamic regulation of light wave characteristics. The orbital angular momentum (OAM) carried by vortex beams offers abundant orthogonal channels for optical communication; however, existing generation approaches frequently encounter issues such as large volume, high cost, and complex structure. This paper successfully realizes an ultra-compact dynamic OAM generation device by integrating phase-change materials with a trench waveguide. The device can dynamically generate OAM modes with topological charges of ±1, without changing the physical structure by taking advantage of the refractive index difference between the crystalline and amorphous states of the phase change materials. This design not only reduces the device length to 9.5µm but also enhances its applicability to multiple wavelengths of light waves, presenting extensive possibilities for the development of new photonic devices and systems in fields such as optical communication, quantum information processing, and optical micro-operation.

基于Sb2S3的超紧凑动态OAM发生器。
集成光子学在光通信、光学微操作等领域的应用日益广泛,特别是在光波特性的动态调控方面显示出巨大的潜力。涡旋光束携带的轨道角动量为光通信提供了丰富的正交通道;然而,现有的发电方法经常遇到体积大、成本高、结构复杂等问题。本文成功地将相变材料与沟槽波导集成在一起,实现了一种超紧凑的动态OAM产生装置。该器件可以在不改变物理结构的情况下,利用相变材料晶态和非晶态之间的折射率差异,动态生成拓扑电荷为±1的OAM模式。该设计不仅将器件长度缩短至9.5 μ m,而且增强了其对多波长光波的适用性,为光通信、量子信息处理、光学微操作等领域新型光子器件和系统的开发提供了广泛的可能性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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