Anti-resonant reflecting guidance mechanism in ring-core fibers for the first-order orbital angular momentum modes generation

Jianheng Qiu; Liang Zhang; Heming Wei; Yana Shang; Jianxiang Wen; Fufei Pang

doi:10.1117/12.2601479

9 October 2021 Anti-resonant reflecting guidance mechanism in ring-core fibers for the first-order orbital angular momentum modes generation

Jianheng Qiu, Liang Zhang, Heming Wei, Yana Shang, Jianxiang Wen, Fufei Pang

Author Affiliations +

Proceedings Volume 11902, Real-time Photonic Measurements, Data Management, and Processing VI; 119021C (2021) https://doi.org/10.1117/12.2601479
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Conference Poster

Abstract

Vortex beams have attracted attention due to their unique properties and wide applications. In this paper, a novel scheme for generating the first-order orbital angular momentum (OAM) modes based on anti-resonant reflecting guidance mechanism in ring-core fibers (RCFs) is proposed and experimentally demonstrated. By directly fusion splicing with the standard single-mode fiber (SMF), anti-resonant reflecting guidance of guided-core modes in RCF can be basically motivated. Consequently, the excited modes can well transmit inside the low-refractive-index central core of the RCFs with exhibiting a Gaussian field distribution (defined as the anti-resonant mode, AR mode). Because of different mode coupling coefficients under external pressure on the RCF, these AR modes can be coupled to the HE11 and HE21 modes, respectively. Results show that, by adjusting the polarization state of injected light beams as well as the pressure on the RCF, OAM modes with topological charge numbers of both the positive (L = +1) and negative (L = -1) can be separately generated at efficiencies of 63.2% and 61.7%, respectively

Conference Presentation

Citation Download Citation

Jianheng Qiu, Liang Zhang, Heming Wei, Yana Shang, Jianxiang Wen, and Fufei Pang "Anti-resonant reflecting guidance mechanism in ring-core fibers for the first-order orbital angular momentum modes generation", Proc. SPIE 11902, Real-time Photonic Measurements, Data Management, and Processing VI, 119021C (9 October 2021); https://doi.org/10.1117/12.2601479

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