Fiber integrated Gaussian-ring-shaped mode field adaptor
A technology of ring mode and adapter, which is applied in cladding optical fiber, coupling of optical waveguide, multi-layer core/cladding optical fiber, etc. Eliminate the problems of high coupling loss of field adapters, and achieve the effect of simple production and high coupling efficiency
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Embodiment 1
[0045] The structure of the Gaussian-ring mode field adapter in this embodiment is single-mode fiber-double-clad fiber-ring core fiber, that is, the ring mode field fiber is selected as ring core fiber. The geometric dimensions of the single-mode fiber 1 selected in this embodiment are that the diameter of the cladding 4 is 125 μm, the diameter of the core 5 is 8 μm, and the numerical aperture of the core 5 is 0.14; the geometric dimensions of the selected double-clad optical fiber 2 are, The outer cladding 8 has a diameter of 125 μm, the inner cladding 7 has a diameter of 76.4 μm, the core 6 has a diameter of 8 μm, and the numerical aperture of the core 6 is 0.14; the cross-section of the selected ring-core optical fiber 3 is as follows Figure 4 As shown, the diameter of the cladding 41 of the ring core fiber 3 is 125 μm, the thickness of the ring core 42 is 5 μm, and the distance from the inner side of the ring core 42 to the axis of the ring core fiber 3 is 22.5 μm. The le...
Embodiment 2
[0052] The structure of the Gaussian-ring mode field adapter in this embodiment is single-mode fiber-double-clad fiber-coaxial double waveguide fiber, that is, the ring mode field fiber is selected as coaxial double waveguide fiber. The geometric dimensions of the single-mode fiber 1 selected in this embodiment are that the diameter of the cladding 4 is 125 μm, the diameter of the core 5 is 8 μm, and the numerical aperture of the core 5 is 0.14; the geometric dimensions of the selected double-clad optical fiber 2 are, The diameter of the outer cladding 8 is 125 μm, the diameter of the inner cladding 7 is 74 μm, the diameter of the core 6 is 8 μm, and the numerical aperture of the core 6 is 0.14; the cross-section of the selected coaxial dual waveguide fiber 3 is as follows Figure 6 As shown, the diameter of the cladding 61 of the coaxial dual waveguide fiber 3 is 125 μm, the thickness of the ring core 62 of the coaxial dual waveguide fiber 3 is 5 μm, and the inner side of the ...
Embodiment 3
[0059] The structure of the Gauss-ring mode field adapter in this embodiment is single-mode fiber-double-clad fiber-multi-ring core fiber, that is, the ring mode field fiber selects multi-ring core fiber. The geometric dimensions of the single-mode fiber 1 selected in this embodiment are that the diameter of the cladding 4 is 125 μm, the diameter of the core 5 is 8 μm, and the numerical aperture of the core 5 is 0.14; the geometric dimensions of the selected double-clad optical fiber 2 are, The diameter of the outer cladding 8 is 125 μm, the diameter of the inner cladding 7 is 76.6 μm, the diameter of the core 6 is 8 μm, and the numerical aperture of the core 6 is 0.14; the cross-section of the selected multi-ring core fiber 3 is as follows Figure 8 As shown, the diameter of the cladding 81 of the multi-ring-core fiber 3 is 125 μm, the distance from the inner side of the second ring core 82 of the multi-ring-core fiber 3 to the axis center of the multi-ring-core fiber 3 is 27....
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