Single mode fiber with low damping coefficient
A technology of attenuation coefficient and single-mode fiber, which is applied in the direction of multi-layer core/cladding fiber, graded index fiber core/cladding fiber, cladding fiber, etc. It can solve the problems of complex manufacturing process and achieve bending loss Good, reduce the specific gravity, reduce the effect of defects
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[0038] The present invention is described in detail below in conjunction with the examples.
[0039] It includes a core layer and a cladding layer. The core layer is a silica glass layer co-doped with germanium and fluorine, or a silica glass layer doped with germanium. layer, auxiliary outer cladding and outer cladding. The outer cladding is a pure silica glass layer, and the radius of the outer cladding is 125 microns.
[0040] Table 1 lists the refractive index profile parameters of the preferred embodiment of the present invention, and Table 2 shows the optical transmission characteristics corresponding to the optical fiber described in Table 1.
[0041] Table 1. Optical fiber profile parameters of the embodiment of the present invention
[0042] serial number
r1[μm]
Δ1[%]
r2[μm]
Δ2[%]
r3[μm]
Δ3[%]
r4[μm]
Δ4[%]
1
4.3
0.19
11.8
-0.13
14.5
-0.52
42
-0.18
2
4.2
0.17
11.5
-...
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