Low-attenuation bend-insensitive single-mode fiber
A bend-insensitive, single-mode optical fiber technology, applied in the field of optical communication, can solve the problems of reduced effective area, fiber leakage, increased attenuation, etc., and achieve the effect of increased effective area, guaranteed attenuation performance, and reduced residual stress
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[0040] Detailed examples will be given below to further illustrate the present invention.
[0041] The bare optical fiber in this embodiment includes a core layer and a cladding layer. The core layer 00 is composed of quartz glass doped with fluorine (F) and germanium (Ge) or quartz glass doped with fluorine and other dopants; surrounding the core layer There are three cladding. The first cladding layer 10 closely surrounds the core layer and is composed of quartz glass doped with fluorine (F) and germanium (Ge) prepared by PCVD process; the second cladding layer 20 closely surrounds the first cladding layer, and the second cladding layer is made of fluorine-doped (F) A silica glass composition whose relative refractive index Δ3 is smaller than that of the other cladding layers. The third cladding 30 is all layers that immediately surround the second cladding. The third cladding layer can be a quartz glass layer doped with fluorine or other dopants, or the third cladding lay...
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