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G.657A2
Product Description
Bending insensitive single-mode optical fiber (G.657.A2) bears the entire characteristics of dispersion unshifted single-mode optical fiber and superior bending performance especially. It is applicable to transmission over entire wavelength from 1260nm to 1625nm. Under the condition of long wave band, the bending radius could be as little as 7.5mm with induced attenuation as low as 1dB at 1625nm.
Product Standard
Complies with or exceeds the ITU-T recommendation G.652.D/G.657.A2 and the IEC 60793-2-50 B1.3/B6.a2 optical fiber specifications
Product Characteristics
Extremely high bending loss resistance in the 7.5 to 15mm bending radius range. It completely overcomes the attenuation of water peak at 1383nm and could operate over the entire wavelength from 1260nm to 1625nm. Completely compatible with existing G.652.D. Accurate geometrical parameters ensure low splicing loss and high splicing efficiency. Excellent PMD performance supports high-speed and long repeater spacing transmission system`
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Optical Characteristics |
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Characteristics |
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Unit |
Value |
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Attenuation |
1310nm 1383nm 1550nm 1625nm |
dB/km dB/km dB/km dB/km |
≤0.35 ≤0.35 ≤0.21 ≤0.24 |
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Attenuation vs. Wavelength |
1285-1330nm vs.1310nm 1525-1575nm vs 1550nm |
dB/km |
≤0.04 ≤0.03 |
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Attenuation Discontinuity |
1310nm 1550nm |
dB |
≤0.05 ≤0.05 |
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Attenuation Nonuniformity |
1310nm 1550nm |
dB/km |
≤0.05 ≤0.05 |
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Attenuation of bidirectional differential |
1310nm 1550nm |
dB/km |
≤0.05 ≤0.05 |
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Zero Dispersion Wavelength |
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nm |
1300-1324 |
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Zero Dispersion Slope |
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ps/(nm2.km) |
≤0.092 |
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Maximum PMD of Individual Fiber |
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ps/(km1/2) |
≤0.2 |
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Cable Cutoff Wavelength λcc |
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nm |
≤1260 |
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Effective Group Refraction Index |
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1310nm 1550nm |
1.467 1.468 |
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Mode Field Diameter |
1310nm |
μm |
8.6±0.4 |
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Geometrical Characteristics |
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Characteristics |
Units |
Value |
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Cladding Diameter |
um |
125±0.7 |
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Core-Cladding Concentricity Error |
um |
≤0.5 |
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Cladding Non-Circularity |
% |
≤1.0 |
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Coating Diameter |
um |
245±10 |
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Coating Non-Circularity |
% |
≤4 |
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Coating-Cladding Concentricity Error |
um |
≤12.5 |
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Warpage |
m |
≥4 |
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Environmental Characteristics（1310nm、1550nm、1625nm） |
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Characteristics |
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Units |
Value |
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Temperature cycling additional decay |
－60℃～+85℃ |
dB/km |
≤0.05 |
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Additional Attenuation due to damp heat aging |
85℃，RH85%，30 days |
dB/km |
≤0.05 |
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Additional Attenuation due to water immersion |
23℃，30 days |
dB/km |
≤0.05 |
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Additional Attenuation due to dry heat aging |
85℃，30 days |
dB/km |
≤0.05 |
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Mechanical Characteristics |
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Characteristics |
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Units |
Value |
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Tensile Proof Test |
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N % Kpsi |
≥9.0 ≥1.0 ≥100 |
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Coating mechanical peel force |
Peak Force Typical Value |
N |
1.0-8.9 1.0-5.0 |
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Tensile Strength |
Weibull Distribution 50% Weibull Distribution 15% |
Gpa |
≥4.00 ≥3.20 |
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Dynamic Fatigue Parameter |
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≥20 |
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Macro bending additional loss |
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15mm radius, 10 turns |
1550nm 1625nm |
dB |
≤0.03 ≤0.1 |
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10mm radius, 1 turn |
1550nm 1625nm |
dB |
≤0.1 ≤0.2 |
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7.5mm radius, 1turn |
1550nm 1625nm |
dB |
≤0.5 ≤1.0 |
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