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- W4288562458 abstract "We report trapping and propagation of photonic Dirac mode in a helically twisted hollow core photonic crystal fiber (HC-PCF) where the trapped light in the hollow (air) defect can preserve the orbital angular momentum (OAM). We show that a photonic Dirac point can emerge even in a twisted system for a suitable choice of curvilinear coordinate and the related waveguide defect modes defined in the new basis can preserve the associated OAM during axial translation. The effect of twist rate, defect geometry and crystal dimension on the propagation of OAM carrying trapped Dirac modes is critically analyzed. The results derived by FEM simulation are verified with an analytical theory based on dynamics of Bloch modes in twisted photonic crystals which are in good agreement. The proposed HC-PCF can play an important role in exciting and guiding of OAM carrying modes that help particle trapping and quantum communication." @default.
- W4288562458 created "2022-07-29" @default.
- W4288562458 creator A5026488936 @default.
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- W4288562458 date "2019-02-25" @default.
- W4288562458 modified "2023-09-25" @default.
- W4288562458 title "Orbital Angular Momentum preserving guided mode in helically twisted hollow core photonic crystal fiber at Dirac point" @default.
- W4288562458 doi "https://doi.org/10.48550/arxiv.1902.09117" @default.
- W4288562458 hasPublicationYear "2019" @default.
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