Single-mode fiber with ultra low attenuation

A single-mode fiber with ultralow attenuation includes a core layer and cladding layers. The cladding layers includes an inner cladding layer surrounding the core layer, a trench cladding layer surrounding the inner cladding layer, an auxiliary outer cladding layer surrounding the trench cladding la...

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Bibliographische Detailangaben
Hauptverfasser:	Zhang, Rui, Long, Shengya, Zhu, Jihong, Zhang, Lei, Wu, Jun, Wang, Ruichun
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS METALLURGY MINERAL OR SLAG WOOL OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS
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Beschreibung
Zusammenfassung:	A single-mode fiber with ultralow attenuation includes a core layer and cladding layers. The cladding layers includes an inner cladding layer surrounding the core layer, a trench cladding layer surrounding the inner cladding layer, an auxiliary outer cladding layer surrounding the trench cladding layer, and an outer cladding layer surrounding the auxiliary cladding layer. The core layer has a radius of 3.9-4.8 μm and a relative refractive index difference of −0.08% to 0.10%. The inner cladding layer has a radius of 9-14 μm and a relative refractive index difference of −0.40% to −0.15%. The trench cladding layer has a radius of 13-25 μm and a refractive index difference of −0.7% to −0.3%. The auxiliary outer cladding layer has a radius of 30-50 μm and a relative refractive index difference of −0.4% to −0.15%. The outer cladding layer is a pure silicon dioxide glass layer.