| Fiber style | Unit | SM
G652D | SM
G657A1 | SM
G657A2 |
| condition | nm | 1310/1550 | 1310/1550 | 1310/1550 |
| attenuation | dB/km | ≤0.36/0.23 | ≤0.35/0.21 | ≤0.35/0.21 |
| Dispersion | 1310nm | Ps/(nm*km) | ≤18 | ≤18 | ≤18 |
| 1550nm | Ps/(nm*km) | ≤22 | ≤22 | ≤22 |
| Zero dispersion wavelength | nm | 1312±10 | 1312±10 | 1300-1324 |
| Zero dispersion slope | ps/(nm²×Km) | ≤0.091 | ≤0.090 | ≤0.092 |
| PMD Maximum Individual Fiber | [ps/√km] | ≤0.2 | ≤0.2 | ≤0.2 |
| PMD Design Link Value | ps/(nm²×Km) | ≤0.08 | ≤0.08 | ≤0.08 |
| Fiber cutoff wavelength λc | nm | >=1180,≤1330 | >=1180,≤1330 | >=1180,≤1330 |
| Cable cutoff wavelength λcc | nm | ≤1260 | ..... | ..... |
| MFD | 1310nm | um | 9.2±0.4 | 9.0±0.4 | 9.8±0.4 |
| 1550nm | um | 10.4±0.8 | 10.1±0.5 | 9.8±0.5 |
| Step(mean of bidirectional measurement) | dB | ≤0.05 | ≤0.05 | ≤0.05 |
| Irregularities over fiber length and point discontinuity | dB | ≤0.05 | ≤0.05 | ≤0.05 |
| Difference backscatter coefficient | dB/km | ≤0.03 | ≤0.03 | ≤0.03 |
| Attenuation uniformity | dB/km | ≤0.01 | ≤0.01 | ≤0.01 |
| Cladding diameter | um | 125.0±0.1 | 124.8±0.1 | 124.8±0.1 |
| Cladding non-circularity | % | ≤1.0 | ≤0.7 | ≤0.7 |
| Coating diameter | um | 242±7 | 242±7 | 242±7 |
| Coating/chaffinch concentrically error | um | ≤12.0 | ≤12.0 | ≤12.0 |
| Coating non circularity | % | ≤6.0 | ≤6.0 | ≤6.0 |
| Core/cladding concentricity error | um | ≤0.6 | ≤0.5 | ≤0.5 |
| Curl(radius) | um | ≥4 | ≥4 | ≥4 |
Complaint
