G.657A2 bending-loss insensitive single-mode optical fiber is superior to standards of ITU-T Recommendation G.652D/G.657A and IEC International Standard 60973-2-50 B1.3.
The optical fiber perform is manufactured via the advanced VAD process. Due to the advantages of the fiber drawing process and the adopted VAD performs, G.657A2 optical fiber shows perfect refractive index profile, excellent geometrical performance, low bending loss etc.
Totally overcomes the attenuation of water peak at 1383nm and could operate over the entire wavelength from 1260nm to 1625nm.
Excellent bending performance, applicable to requirement of special bending radius.
Compatible with existing G.652D.
Accurate geometrical parameters that insures low splicing loss and high splicing efficiency.
Excellent PMD performance, supporting high-speed and long repeater spacing transmission system.
| Characteristics | Conditions | Specified Value | Units |
| Geometrical Characteristics |
| Cladding Diameter |
| 125±0.7 | μm |
| Cladding Non-circularity |
| ≤0.8 | % |
| Coating Diameter |
| 242±7 | μm |
| Coating-Cladding Concentricity Error |
| ≤12 | μm |
| Coating Diameter |
| ≤3.0 | % |
| Core-Cladding Concentricity Error |
| ≤0.54 | μm |
| Curl |
| ≥4 | m |
| Optical Characteristics |
| Attenuation | 1310nm | ≤0.35 | dB/km |
| 1383nm | ≤0.33 | dB/km |
| 1550nm | ≤0.21 | dB/km |
| 1625nm | ≤0.23 | dB/km |
| Zero Dispersion Wavelength |
| 1300-1322 | nm |
| Zero Dispersion Slope |
| ≤0.091 | ps/(nm2●km) |
| Typical Value |
| ≤0.086 | ps/(nm2●km) |
| PMD | Maximum Individual Fiber | ≤0.2 | ps/√km |
| PMD Link (M=20, Q=0.01%) | ≤0.1 | ps/√km |
| Typical Value | ≤0.04 | ps/√km |
| Cable Cut-off Wavelength λcc |
| ≤1260 | nm |
| MFD | 1310nm | 8.6±0.4 | μm |
| 1550nm | 9.7±0.6 | μm |
| Effective Group Index of Refraction | 1310nm | 1.4672 |
|
| 1550nm | 1.4683 |
|
| Point Discontinuity | 1310nm | ≤0.04 | dB/km |
| 1550nm | ≤0.04 | dB/km |
| Environmental Characteristics |
| Temperature Cycling | -60℃+85℃ | ≤0.03 | dB/km |
| Temperatuer Humidity Cycling | 85℃、 RH85%、 30 days | ≤0.03 | dB/km |
| Water Immersion | 23℃、 30 days | ≤0.03 | dB/km |
| Dry Heat Aging | 85℃、 30 days | ≤0.03 | dB/km |
| Mechanical Characteristics |
| Proof Test |
| ≥1 | % |
| ≥9.1 | N |
| ≥0.74 | Gpa |
| Coating Strip Force | Peak Force | 1.3-8.9 | N |
| Typical Value | 1.9 | N |
| Dynamic Fatigue Nd |
| ≥20 |
|
| Macro-bend Induced Attenuation | 10 turns with radius of 15mm at 1550nm | ≤0.03 | dB |
| 10 turns with radius of 15mm at 1550nm | ≤0.1 | dB |
| 1 turn with radius of 10mm at 1550nm | ≤0.1 | dB |
| 1 turn with radius of 10mm at 1625nm | ≤0.2 | dB |
| 1 turn with radius of 7.5mm at 1550nm | ≤0.4 | dB |
| 1 turn with radius of 7.5mm at 1625nm | ≤0.8 | dB |
| Length per reel |
| 2.1-61 | km |
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