AI Article Synopsis
- A Reuleaux triangle core fiber (RTF) is developed with a unique triple rotational symmetry, leading to enhanced optical properties.
- The RTF is twisted to create a chiral fiber grating, allowing it to convert core modes to a 3rd-order vortex mode, which possesses orbital angular momentum.
- Experimental results confirm that this mode has high efficiency, purity, and polarization independence, suggesting potential applications in advanced optical fiber communication systems utilizing OAM multiplexing.
Article Abstract
A Reuleaux triangle core fiber (RTF) with triple rotational symmetry is proposed and fabricated. Then the RTF is twisted to form the chiral fiber grating, which converts the core mode into a vortex mode containing 3rd-order orbital angular momentum (OAM). Based on the Fourier expansion of the core boundary, the straight-sided and arc-sided triangular core profiles were analyzed, revealing the mechanism of high-efficiency OAM3 generation. The experimental results show a 3rd-order vortex mode with a high conversion efficiency and purity, and the polarization-independent characteristics endowed by the core shape are also confirmed. The proposed RTF provides a new, to the best of our knowledge, way for higher-order vortex beam generation, which can be used in optical fiber communication systems with OAM multiplexing.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/OL.513701 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Exceptional point enhanced nanoparticle detection in deformed Reuleaux-triangle microcavity.
Front Optoelectron
August 2024
Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication, Shanghai Institute for Advanced Communication and Data Science, School of Communication and Information Engineering, Shanghai University, Shanghai, 200444, China.
In this paper, we propose a deformed Reuleaux-triangle resonator (RTR) to form exceptional point (EP) which results in the detection sensitivity enhancement of nanoparticle. After introducing single nanoparticle to the deformed RTR at EP, frequency splitting obtains an enhancement of more than 6 times compared with non-deformed RTR. In addition, EP induced a result that the far field pattern of chiral mode responses significantly to external perturbation, corresponding to the change in internal chirality.
View Article and Find Full Text PDFArticle Synopsis
- A Reuleaux triangle core fiber (RTF) is developed with a unique triple rotational symmetry, leading to enhanced optical properties.
- The RTF is twisted to create a chiral fiber grating, allowing it to convert core modes to a 3rd-order vortex mode, which possesses orbital angular momentum.
- Experimental results confirm that this mode has high efficiency, purity, and polarization independence, suggesting potential applications in advanced optical fiber communication systems utilizing OAM multiplexing.
A mixed multi-order vortex beam generator, based on a Reuleaux triangle core fiber chiral grating (RCFG), is proposed. The triangular perturbation and off-axis effects induced by core shape, result in the simultaneous coupling of the core mode with the 1st- and 3rd-order vortex modes. To the best of our knowledge, this is the first time that a mixed vortex beam was generated in a single chiral fiber.
View Article and Find Full Text PDFBAl: A Three-Dimensional Molecular Reuleaux Triangle.
Molecules
November 2022
Departamento de Física Aplicada, Centro de Investigación y de Estudios Avanzados, Unidad Mérida. Km 6 Antigua Carretera a Progreso. Apdo., Postal 73, Cordemex, Merida 97310, Mexico.
We systematically explore the potential energy surface of the BAl combination of atoms. The putative global minimum corresponds to a structure formed by an Al square facing a B triangle. Interestingly, the dynamical behavior can be described as a Reuleaux molecular triangle since it involves the rotation of the B triangle at the top of the Al square.
View Article and Find Full Text PDFFar-Field Correlations Verifying Non-Hermitian Degeneracy of Optical Modes.
Phys Rev Lett
August 2022
Center for Theoretical Physics of Complex Systems, IBS, Daejeon 34126, Republic of Korea.
An experimental verification of an exceptional point (EP) in a stand-alone chaotic microcavity is a tough issue because as deformation parameters are fixed the traditional frequency analysis methods cannot be applied any more. Through numerical investigations with an asymmetric Reuleaux triangle microcavity (ARTM), we find that the eigenvalue difference of paired modes can approach near-zero regardless of nonorthogonality of the modes. In this case, for a definite verification of EPs in experiments, wave function coalescence should be confirmed.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!