| Category | Description | G657A1 | G657A2/B2 | |
| Standard | Standard | |||
| Optical transmission performance | Attenuation coefficient | 1310nm | ≤0.35 | ≤0.35 |
| 1383nm | ≤0.35 | ≤0.35 | ||
| 1550nm | ≤0.21 | ≤0.21 | ||
| 1625nm | ≤0.23 | ≤0.23 | ||
| Attenuation inhomogeneity | 1310nm、1550nm | ≤0.03 | ≤0.05 | |
| Attenuation discontinuity | 1310nm、1550nm | ≤0.03 | ≤0.05 | |
| Wavelength attenuation
characteristics |
1288~1330nm | ≤0.05 | ≤0.05 | |
| 1525~1575nm | ≤0.05 | ≤0.05 | ||
| Dispersion characteristic | The zero dispersion wavelength
nm |
1300~1324 | 1300~1324 | |
| Zero dispersion slope | ≤0.092 | ≤0.092 | ||
| 1288~1339nm | ≤3.5 | ≤3.5 | ||
| 1271~1360nm | ≤5.3 | ≤5.3 | ||
| 1550nm | ≤18 | ≤18 | ||
| 1625nm | ≤22 | ≤22 | ||
| The polarization mode dispersion of the fiber | ≤0.1 | ≤0.1 | ||
| Fiber cutoff wavelength | ≤1260 | ≤1260 | ||
| Macro bending loss
（10 laps，30mm） |
1550nm | ≤0.2dB | ≤0.03 | |
| （10 laps，30mm） | 1625nm | ≤0.5dB | ≤0.1 | |
| （1 lap，20mm） | 1550nm | ≤0.3dB | ≤0.1 | |
| （1 lap，20mm） | 1625nm | ≤1.0dB | ≤0.2 | |
| （1 lap，15mm） | 1550nm | – | ≤0.5 | |
| （1 lap，15mm） | 1625nm | – | ≤1.0 | |
| Mode field diameter | 1310nm | 8.8±0.4 | 8.6±0.4 | |
| Dimension parameter | Warp degrees | ≥4.0 | ≥4.0 | |
| Cladding diameter | 125 ± 0.7 | 125 ± 0.7 | ||
| Core/package concentricity | ≤0.5 | ≤0.5 | ||
| Cladding non-circularity | ≤1.0% | ≤1.0% | ||
| Coating diameter | 243± 5 | 243± 5 | ||
| Coating concentricity | ≤8 | ≤8 | ||
| Coating roundness | ≤3% | ≤3% | ||
| Mechanical property | Strain | ≥1.05% | ≥1.05% | |
| Tensile strength(10m) | 15% Weber fracture probability | 2.76 | 2.76 | |
| 50% Weber fracture probability | 3.45 | 3.45 | ||
| Fatigue parameters Nd | ≥ 22 | ≥ 22 | ||
| Coating peak stripping force N | 1.0~8.9 | 1.0~8.9 | ||
| Coating average stripping force N | 1.0~5.0 | 1.0~5.0 | ||
| Environmental
performance |
Additional damping temperature cycle (-60℃ ～ +85℃)
dB/km@1310nm，1550nm, 1625 nm |
≤ 0.05 | ≤ 0.05 | |
| Environmental
performance |
Wet and heat aging (+85±2℃, 85%RH，30 days) dB/km@1310nm，
1550nm, 1625 nm |
≤ 0.05 | ≤ 0.05 |
| High temperature aging(85±2℃，30 days ) dB/km @1310nm，1550
nm, 1625 nm |
≤ 0.05 | ≤ 0.05 | |
| Additional attenuation of flooding (23±2℃，30 days ) dB/km
@1310nm，1550nm, 1625 nm |
≤ 0.05 | ≤ 0.05 |
