The characteristics of a bending-loss insensitive single-mode optical fibre and cable for the access network. ITU-T G.657.A1and ITU-T G.657.A2 fibres are fully compliant with ITU-T G.652.D.
| FIBRE ATTRIBUTES | DETAIL | VALUE |
| Mode field diameter | Wavelength Range of nominal values Tolerance |
1310 nm 8.6-9.2 μm lyP 0.4 μm |
| Core concentricity error | Maximum | 0.5 μm |
| Cladding non-circularity | Maximum | 1.0% |
| Cable cut-off wavelength | Maximum | 1260 nm G.657. A1 G.657. A2 |
| Macrobend loss | Radius Number of turns Maximum at 1550 nm Maximum at 1625 nm |
15 10 15 10 7.5 10 1 10 1 1 0.25 0.75 0.03 0.1 0.5 1.0 1.5 0.1 0.2 1.0 |
| Proof stress | Minimum | 0.69 GPa |
| Chromatic dispersion | λ0min | 1300 nm |
| Coefficient | λ0max S0min S0max |
1324 nm 0.073 ps/nm2·km 0.092 ps/nm2·km |
| CABLE ATTRIBUTES | DETAIL | VALUE |
| Attenuation coefficient | Maximum from 1310 nm to 1625 nm Maximum at 1383 ± 3 nm after hydrogen ageing Maximum at 1530 – 1565 nm |
0.4 dB/km 0.4 dB/km 0.30 dB/km |
| PMD coefficient | M Q Maximum PMDQ |
20 cables 0.01% 0.2 ps/√km |
Relevant specified bending radii for ITU-T G.652 and ITU-T G.657
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