Patent · US Active

Single-mode fiber with ultra low attenuation

US10514495B2 · kind B2 · utility

0Cited by

0References

3Claims

0Family size

Assignee

YANGTZE OPTICAL FIBRE AND CABLE JOINT STOCK LIMITED COMPANY · CN

Inventors

Shengya Long · Hubei, CN
Jihong Zhu · Hubei, CN
Lei Zhang · Nanhu, CN
Jun Wu · Hubei, CN
Rui Zhang · Hubei, CN
Ruichun Wang · Hubei, CN

Key dates

Filing date	Oct 17, 2017
Grant date	Dec 24, 2019
Priority date	—
Expiry date	Oct 17, 2037

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03C2213/00
WIPO fieldOptics
WIPO sectorInstruments

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.