SiO2 Matched-cladding Single Mode Optic Fiber - G.652/B1 Optic Fiber

G.652/B1 Optic Fiber

1. Fiber Core
2. Cladding Layer

Standard of execution

GB/T9771.1-2008

Geological Sizes

• Mode field Diameter (1310nm): (8.6 ~ 9.5) ± 0.5µm
• Cladding Layer Diameter: 125 ± 1.0μm
• Cladding Layer Non-circularity: ≤ 1.0%
• Core/Cladding Layer Concentricity Tolerance: ≤ 0.6µm
• Coating Layer Diameter: 245 ± 10 μm (uncolored)
• Cladding/Coating Layer Concentricity Tolerance: ≤ 12.5µm
• Bending Radius: R ≥ 4m

Optic & Transmission Performance

1. Group Refraction Index: 1.466

2. Attenuation Constant:

• 1310mm ——≤ 0.35dB/km
• 1550mm ——≤ 0.21dB/km
• 1625mm ——≤ 0.24dB/km

3. Macro bend Attenuation:

• Ф60mm, 100rings
• 1550nm ≤ 0.10dB
• 1625nm ≤ 0.10dB

4. Wavelength Additional Attenuation

• 1285 ~ 1330nm Wavelength Additional Attenuation
• Constant 0.05 dB/km.
• 1525~1575nm Wavelength Additional Attenuation
• Constant 0.05 dB/km.

5. Attenuation Non-conformity

On fiber backward scattering curve, attenuation difference tolerance between any actual attenuation of 500m length and average 500m:no more than 0.05db.

6. Cutoff Wavelength

• Cutoff Wavelength of FOC: λcc ≤ 1260nm
• Cutoff Wavelength of Optic Fiber: λc ≤ 1250mm

7. Dispersion

• Zero Dispersion Wavelength Range: 1300 ~ 1324nm
• Zero Dispersion Slope: ≤ 0.092 ps/nm²·km
• Dispersion Coefficient Absolute Value:
  • 1288~1339nm ≤ 3.5 ps/(nm·km)
  • 1271~1360nm ≤ 5.3 ps/(nm·km)

8. 1550nm Wavelength Range

• Dispersion Coefficient Absolute Value: ≤18.0ps/nm·km
• 1200nm~1600nm Dispersion Calculation Formula:

  Dispersion = D(λ) = (S₀ / 4) * [λ - (λ₀⁴ / λ³)] ps/(nm·km) 

Mechanical Performance

• Selection Test: 1% (0.7GPa, 8.6N, 100KPSI).
• Dynamic Fatigue Coefficient: nd ≥ 0.
• Coating Splitting Force Peak Value: 1.0 ~ 8.9N.
• Coating Appearance: No gap and air bubble should be found.
• within double coating layers.

Environment & Performance

1. Temperature characteristic test Temperature range: -60°C ~ +85°C, teo cycle time.
   Additional attenuation coefficient under 1550nm wavelength: ≤ 0.05 dB/km.
2. Submerging test Fiber sample immersing in the water after 30 days under 23°C ± 2°C, allowed additional attenuation coefficient under 1550nm wavelength: ≤ 0.05 dB/km.
3. Steady damp heat test
   Fiber places in condition that temperature is 85°C ± 2°C and relative humidity ≥ 85% for 30 days, allowed additional attenuation coefficient under 1550nm wavelength: ≤ 0.05 dB/km.

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