High-bandwidth multi-mode fiber
A multi-mode fiber, high-bandwidth technology, applied in the field of optical communication, can solve the problems of narrow working wavelength range of high-bandwidth, high chromatic dispersion of germanium-doped core layer, sensitivity to working wavelength, etc., so as to reduce bandwidth-wavelength sensitivity and reduce Fiber Attenuation, Effects of Improving Material Dispersion Properties
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[0034] Specific examples will be given below to further illustrate the present invention.
[0035] It includes a core layer and a cladding layer. The cladding layer is an inner cladding layer and an outer cladding layer from the inside to the outside. The refractive index profile of the core layer is parabolic, the distribution index is α, the radius of the core layer is R1, and the center of the core layer is the largest Relative refractive index difference Δ1 max The core layer is a silicon dioxide glass layer co-doped with Ge, P, F, and P and Ge are used as positive dopants. The contribution of P in the center of the core layer is ΔP0, the contribution of P at the boundary between the core and inner cladding is ΔP1, the difference between the contribution of P at the center and the edge of the core The P content in the center of the core layer is consistent with the edge of the core layer, that is, the concentration difference is as small as possible; the core layer F is used ...
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