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.657A1 optical fiber shows perfect refractive index profile，excellent geometrical performance, low bending loss etc.
It completely overcomes the attenuation of water peak at 1383 nm and could operate over the entire waveband from 1260 nm to 1625 nm.
Excellent bending performance, applicable to occasion with special requirement of bending radius.
Completely compatible with existing G.652D.
Accurate geometrical parameter ensures low splicing loss and high splicing
performance.
Excellent PMD performance supports 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 |
| Temperature 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 |
| ≥0.73 | Gpa |
| Coating Strip Force | Peak Force | 1.3-8.9 | N |
| Typical Value | 1.9 | N |
| Dynamic Fatigue Nd |
| ≥20 |
|
| Macro-bend Induced Attenuation | R15 mm， 1550 nm
10 turns with radius of 15mm at 1550nm | ≤0.2 | dB |
R15 mm， 1625 nm
10 turns with radius of 15mm at 1550nm | ≤0.8 | dB |
R10 mm， 1550 nm
1 turn with radius of 10mm at 1550nm | ≤0.7 | dB |
R10 mm， 1625 nm
1 turn with radius of 10mm at 1625nm | ≤1.2 | dB |
| Length per reel |
| 2.1-61 | km |
English
