OPTICAL FIBRE HAVING LOW BEND LOSSES Russian patent published in 2015 - IPC G02B6/36

Abstract RU 2567468 C2

FIELD: physics, optics.

SUBSTANCE: invention relates to optical fibres having low bend losses. The fibre has a germanium dioxide-doped central region of the core, having an external radius r₁ and a refraction index Δ₁. A first region of the inner cladding has an external radius r₂ greater than 8 mcm and a refraction index Δ₂. A second region of the outer cladding surrounds the region of the inner cladding, having a refraction index Δ₃, where Δ₁>Δ₃>Δ₂. The difference between Δ₃ and Δ₂ is greater than 0.01. The fibre has a cutoff of a 22 m cable less than or equal to 1260 nm, and r₁/r₂ greater than or equal to 0.25.

EFFECT: obtaining an optical fibre with low bend losses.

10 cl, 2 tbl, 1 dwg

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RU 2 567 468 C2

Authors

Bukbajnder Dana K.

Li Min-Tszjun'

Tandon Pushkar

Dates

2015-11-10—Published

2011-02-22—Filed