OPTICAL FIBRE WITH LOW FLEXURAL LOSSES Russian patent published in 2014 - IPC G02B6/36

Abstract RU 2537086 C2

FIELD: physics.

SUBSTANCE: optical fibre includes the central area of the glass core with the maximum gain Δ_1max of the index of refraction in percents. The first internal annular field surrounds a core and has the gain Δ₂ of the index of refraction in percentage. The annular field with depression surrounds the internal annular field and has the gain Δ₃. The third internal annular field surrounds the annular field with depression and has the gain Δ₄ of the index of refraction in percentage. Meanwhile Δ_1max>Δ₄>Δ₂>Δ₃. The difference between Δ₄ and Δ₂ exceeds 0.01, and the volume |V₃| of the profile amounts, at least, 60%Δ mcm².

EFFECT: low flexural losses.

20 cl, 1 dwg

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RU 2 537 086 C2

Authors

Bukbinder Dana K.

Li Min-Tszjun'

Tandon Pushkar

Dates

2014-12-27—Published

2010-09-02—Filed