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G.652 | G.655 | 50/125μm | 62.5/125μm | |||
Attenuation (+20°C) | @850nm | ≤3.5 dB/km | ≤3.5 dB/km | |||
@1300nm | ≤1.5 dB/km | ≤1.5 dB/km | ||||
@1310nm | ≤0.45 dB/km | ≤0.50 dB/km | ||||
@1550nm | ≤0.30 dB/km | ≤0.50dB/km | ||||
Bandwidth (Class A) | @850nm | ≥500 MHz·km | ≥200 MHz·km | |||
@1300nm | ≥1000 MHz·km | ≥600 MHz·km | ||||
Numerical Aperture | 0.200±0.015NA | 0.275±0.015NA | ||||
Cable Cut-off Wavelength λcc | ≤1260nm | ≤1480nm | ||||
No. | Items | Unit | Specification | ||
G.657A1 | |||||
1 | Mode Field Diameter | 1310nm | μm | 9.0±0.4 | |
1550nm | μm | 10.1±0.5 | |||
2 | Cladding Diameter | μm | 124.8±0.7 | ||
3 | Cladding Non-Circularity | % | ≤0.7 | ||
4 | Core-Cladding Concentricity Error | μm | ≤0.5 | ||
5 | Coating Diameter | μm | 245±5 | ||
6 | Coating Non-Circularity | % | ≤6.0 | ||
7 | Cladding-Coating Concentricity Error | μm | ≤12.0 | ||
8 | Cable Cutoff Wavelength | nm | λcc≤1260 | ||
9 | Attenuation (max.) | 1310nm | dB/km | ≤0.35 | |
1550nm | dB/km | ≤0.21 | |||
10 | Macro-Bending Loss | 1turn×10mm radius @1550nm | dB | ≤0.75 | |
1turn×10mm radius@1625nm | dB | ≤1.5 | |||












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