Work

All-fiber generation and Poincaré sphere representation of double superposition states of OAM modes

Year: 2025

Type: article

Abstract: This paper proposes a hybrid-order orbital angular momentum Poincaré sphere to refine the representation of high-order spatial modes. The orbital angular momentum Poincaré sphere is extended to a more general form. Benefiting from the degenerate case of the hybrid-order Poincaré sphere, this new Poincaré sphere is both complete and intuitive, enabling the guided generation of vector light fields. By utilizing an all-fiber structured light field generation system based on cascaded fused-biconical tapered mode selective couplers, some typical beams corresponding to arbitrary points on the hybrid-order orbital angular momentum Poincaré sphere are generated. This miniaturized solution for structured light field generation is both cheap and fast compared to liquid crystal devices.

Source: Optics Express

DOI: 10.1364/oe.558681

Authors: Letian Gu, Huiyi Guo, Baiwei Mao, Zekun Shi, Zhi Wang, Yan-ge Liu

Language: English

Topic: Orbital Angular Momentum in Optics

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funders: National Natural Science Foundation of China, Fundamental Research Funds for the Central Universities

Awards: G164677322, G6367655673