FIELD: physics.
SUBSTANCE: invention relates to optical fibres, having low bending losses. Two variants of an optical fibre are disclosed in the declared group of inventions . In the first variant, optical fibre includes the first inner shell area, having the outer radius r2 more than 8 microns, and the refractive index Δ2, and the second outer shell area, enclosing the inner shell area, having a refractive index Δ4, where Δ1>Δ4>Δ2. The difference between Δ4 and 2 Δ is more than 0.002%, Δ4 is more than 0.0%, and the mentioned fibre has a number of MAC> 7.5. In the second variant, the disclosing optical fibre consists of the first inner shell area, having the outer radius r2 more than 9 microns, and the refractive index Δ2, and the second outer shell area, enclosing the inner shell area, having a refractive index Δ4, where Δ1>Δ4>Δ2, the difference between Δ4 and Δ2 is more than 0.002%.
EFFECT: invention reduces the optical fibres bending loss .
18 cl, 4 dwg, 8 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| OPTICAL FIBRE WITH LOW FLEXURAL LOSSES | 2010 |
|
RU2537086C2 |
| OPTICAL FIBRE HAVING LOW BEND LOSSES | 2011 |
|
RU2567468C2 |
| LOW-LOSS AT BENDS OPTICAL FIBER | 2017 |
|
RU2727854C2 |
| FIBRE OF HIGH EFFICIENT AREA WITH CORE NOT CONTAINING Ge | 2011 |
|
RU2550752C2 |
| SINGLE MODE WAVE GUIDE FOR COMPENSATING DISPERSION | 1997 |
|
RU2171484C2 |
| SINGLE-MODE OPTICAL WAVEGUIDE WITH LARGE EFFECTIVE AREA | 1997 |
|
RU2172505C2 |
| OPTICAL FIBER | 2018 |
|
RU2771518C2 |
| SINGLE-MODE OPTICAL WAVEGUIDE WITH LARGE EFFECTIVE AREA | 1997 |
|
RU2172507C2 |
| SINGLE-MODE FIBRE WITH SHALLOW GROOVE, INSENSITIVE TO BENDING LOSSES, AND CORRESPONDING OPTICAL SYSTEM | 2017 |
|
RU2755736C1 |
| OFFSET-DISPERSION OPTICAL FIBER | 2000 |
|
RU2206113C2 |
