G.657.A1

• Mode Field Diameter (At 1310) - 8.6±0.4μm

• Cladding diameter - 125±0.7μm

• Core concentricity error - ≤0.5μm

• Cladding non-circularity - ≤0.7%

• Cut-off wavelength (λcc) (for cable) - ≤1260nm

• Cut-off wavelength (λc) (for fiber) - 1180nm~1330nm

• Primary coating diameter (Not included color layer) - 200±10μm

• 00Coating-cladding concentricity error - ≤12.0μm

• Fiber curl radius - ≥4m

• Attenuation(fiber) -

  • At 1310nm ≤0.36dB/km

  • At 1550nm ≤0.22dB/km

• Attenuation(cable) -

  • At 1310nm ≤0.4dB/km

  • At 1550nm ≤0.3dB/km

• Macro bending loss -

  • Φ=30mm, 10turns at 1550nm ≤0.25dB

  • Φ=30mm, 10turns at 1625nm ≤1.0dB

  • Φ=20mm, 1turn at 1550nm ≤0.75dB

  • Φ=20mm, 1turn at 1625nm ≤1.5dB

• Chromatic dispersion -

  • Within 1288~1339nm ≤3.5ps/nm·km

  • At 1550nm ≤18ps/nm·km

• Zero dispersion wavelength - 1300~1324nm

• Zero dispersion slope - ≤0.092ps/nm2·km

*Note：The minimum thickness of the sheath is 0.3mm.