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25 May 2022 Conversion of LP11 modes to vortex modes in an adiabatically twisted highly birefringent optical fiber
Marta Bernas, Kinga Zolnacz, Maciej Napiórkowski, Gabriela Statkiewicz-Barabach, Waclaw Urbanczyk
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Proceedings Volume PC12140, Micro-Structured and Specialty Optical Fibres VII; PC1214007 (2022) https://doi.org/10.1117/12.2621167
Event: SPIE Photonics Europe, 2022, Strasbourg, France
Abstract
We experimentally demonstrate the possibility of adiabatic conversion of LP11 modes to vortex modes in a twisted highly birefringent fiber with a gradually increasing twist rate. Based on the values of effective indices, the LP11 modes are selectively converted to right-/left-handed circularly polarized vortex modes HE21 with a total angular momentum of ±2 and to quasi-TE01/TM01 modes with a total angular momentum of 0. The proposed conversion method has a purely topological origin, therefore, it is broadband in nature, in contrast to the methods based on resonant effects, and can be applied as an all-fiber broadband source of vortex beams. Funding: Narodowe Centrum Nauki (DEC-2016/22/A/ST7/00089, Maestro 8).
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Marta Bernas, Kinga Zolnacz, Maciej Napiórkowski, Gabriela Statkiewicz-Barabach, and Waclaw Urbanczyk "Conversion of LP11 modes to vortex modes in an adiabatically twisted highly birefringent optical fiber", Proc. SPIE PC12140, Micro-Structured and Specialty Optical Fibres VII, PC1214007 (25 May 2022); https://doi.org/10.1117/12.2621167
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KEYWORDS
Optical fibers
Four wave mixing
Manufacturing
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