| Optical Characteristics | G652D | G657 | ||
| Attenuation | @1310 nm | ≤0.35 dB/KM | ≤0.35 dB/KM | |
| @1383 nm | ≤0.35 dB/KM (After H2 aging) | ≤0.35 dB/KM (After H2 aging) | ||
| @1550 nm | ≤0.22 dB/KM | ≤0.21dB/KM | ||
| @1625 nm | ≤0.24 dB/KM | ≤0.23 dB/KM | ||
| Attenuation vs.Wavelength | @1310 nm | 1285~1330 nm | ≤0.03 dB/KM | ≤0.03 dB/KM |
| @1550 nm | 1525~1375 nm | ≤0.02 dB/KM | ≤0.02 dB/KM | |
| Dispersion Coefficient | 1530~1565 nm | – | – | |
| 1565~1625 nm | – | – | ||
| 1285~1340 nm | -3.0~3.0 ps/(nm.km) | – | ||
| @1550 nm | ≤18 ps/(nm.km) | ≤18 ps/(nm.km) | ||
| @1625 nm | ≤22 ps/(nm.km) | ≤22 ps/(nm.km) | ||
| Zero Dispersion Wavelength | 1302~1322 nm.km | 1300~1324 nm.km | ||
| Zero Dispersion Slope | ≤0.090 ps/(nm².km) | ≤0.092 ps/(nm².km) | ||
| Zero Dispersion Slope (Typical) | ≤0.086 ps/(nm².km) | – | ||
| Polarization Mode Dispersion | Maximum Individual Fiber | ≤0.2 ps/√km | ≤0.2 ps/√km | |
| Design Link (Value M=20.0=0.01%) | ≤0.1 ps/√km | ≤0.1 ps/√km | ||
| Cable Cut-off Wavelength | ≤1260 nm | ≤1260 nm | ||
| Mode Field Diameter | @1310 nm | 9.2±0.4 µm | 8.8±0.4 µm | |
| @1550 nm | 10.4±0.5 µm | 9.8±0.5 µm | ||
| Group Index of Refraction | @1310 nm | 1.466 | 1.466 | |
| (Typical) | @1550 nm | 1.467 | 1.467 | |
| Geometrical Characteristics | ||||
| Cladding Diameter | 124.8±0.7 µm | 124.8±0.7 µm | ||
| Cladding Non-Circularity | ≤0.7% | ≤0.7% | ||
| Coating Diameter | 245±5 µm | 245±5 µm | ||
| Coating/Cladding Concentricity Error | ≤12.0 µm | ≤12.0 µm | ||
| Coating Non-Circularity | ≤6.0% | ≤6.0% | ||
| Core/Cladding Concentricity Error | ≤0.5 µm | ≤0.5 µm | ||
| Curl (Radius) | ≥4 m | ≥4 m | ||
| Environmental Characteristics (@1310 nm/@1550 nm) | ||||
| Attenuation at Temperature cycling △ α (-60°C~+85°C) | ≤0.05 dB/km | ≤0.05 dB/km | ||
| Attenuation at Temperature-Humidity Cycling (-10°C~+85°C, 98% R.H.) | ≤0.05 dB/km | ≤0.05 dB/km | ||
| Attenuation at Damp Heat Dependence (85°C, 98% R.H., 30 days) | ≤0.05 dB/km | ≤0.05 dB/km | ||
| Attenuation at Watersoak Dependence (23°C, 30 days) | ≤0.05 dB/km | ≤0.05 dB/km | ||
| Mechanical Characteristics | ||||
| Proof Test (Off Line) | ≥9.0 N (≥100 kpsi) | ≥9.0 N (≥100 kpsi) | ||
| Attention at Bending | 1 Turn, 7.5 mm Radius | – | ≤0.5 dB | |
| Dependence | 1Turn, 10 mm Radius | – | ≤0.1 dB | |
| 1Turn, 15 mm Radius | – | ≤0.03 dB | ||
| 1Turn, 25 mm Radius | ≤0.05 dB | – | ||
| Coating Strip Force (Typical) | 1.7 N | 1.7 N | ||
| Dynamics Stress Corrosion Susceptibility Parameter (Nd, Typical) | ≥20 | ≥20 | ||
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