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- W3212463669 abstract "This paper proposes a novel type of fiber with dual-helical-leakage-channels for large mode area and single mode operation. A coordinate transformation simulation technique is adopted to analyse the fiber performance, such as mode field area and loss coefficients, which can be modified by many fiber parameters. The simulation results show that loss coefficient L will decrease with the increase of helix pitch Λ and fiber core radius r, and increase with the increase of central angle of cladding 2 θ and wavelength λ. When θ = 12°~14°, Λ= 15 mm~16 mm, λ = 1.9 µm~2.1 µm, n1 = n3 = 1.438, n0 = n2 = n1 + 0.001, r = 30 µm, the fiber loss coefficients are L01 = 0.06 dB/m, L11 = 17.9 dB/m and L21 = 55.9 dB/m respectively, the transverse mode discrimination reaches the highest international standard of large mode area fiber, so the single mode fiber diameter is 60 µm. Especially, the helix pitch is 15 mm~16 mm, this indicates that the proposed fiber is easier to be drawn. In addition, the fiber has an all-solid-state structure, so it is convenient for cutting and splicing. The fiber may have a good application prospect in the field of high-power fiber lasers." @default.
- W3212463669 created "2021-11-22" @default.
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- W3212463669 date "2022-01-01" @default.
- W3212463669 modified "2023-09-29" @default.
- W3212463669 title "A large mode area fiber with dual-helical-leakage-channels" @default.
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- W3212463669 doi "https://doi.org/10.1016/j.ijleo.2021.168340" @default.
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