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| Single Mode 9/125 G657A1 | |||||||||
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The single mode fiber meets or exceeds the ITU-T Recommendation G.652.D/G.657.A1 including the IEC 60793-2-50 type B1.3/B6.a1 Optical Fiber Specification.
It offers good resistance to additional losses due to low macro bending in the 1600 nm wavelength region. This not only supports L-band applications but also allows for easy installation without excessive care when storing the fiber, for example, in splicing cassettes. For cable use inside buildings, the fiber supports installation with small cable bending radii and compact organizers. The bending induced loss at 1625 nm no more than 0.5 dB for one wind with 10 mm radius.
Optical Characteristics for Single Mode 9/125 µm (G657A1)
CHARACTERISTIC | CONDITION | SPECIFIC VALUE | UNIT | |
Optical Characteristics | ||||
Attenuation | 1310 nm | ≤0.35 | [dB/km] | |
1383 nm (after H2-aging) | ≤0.35 | |||
1460 nm | ≤0.25 | |||
1550 nm | ≤0.21 | |||
1625 nm | ≤0.23 | |||
Attenuation vs. Wavelength Max. α Difference | 1285-1330 nm | ≤0.03
| [dB/km] | |
1525-1575 nm
| ≤0.02
| |||
Dispersion Coefficient | 1285-1340 nm | ≥-3.4 ≤3.4 | [ps/(nm.km)] | |
1550 nm | ≤18 | |||
1625 nm | ≤22 | |||
Zero Dispersion Wavelength | 1300-1324 | [nm] | ||
Zero Dispersion Slope
Typical value | ≤0.092 | [ps/(nm².km)] | ||
Zero Dispersion Slope Typical Value
| 0.086 | [ps/(nm².km)] | ||
PMD | Maximum Individual Fiber | ≤0.10 | [ps/√km] | |
Link Design Value (M=20, Q=0.01%) | ≤0.06 | |||
Typical Value | 0.04 | |||
Cable Cutoff Wavelength λсс
| ≤1260 | [nm] | ||
Mode Field Diameter (MFD) | 1310 nm
| 8.4~9.2 | [µm] | |
1550 nm
| 9.3~10.3 | [µm] | ||
Effective Group Index of Refraction (Neff) | 1310 nm
| 1.466 | ||
1550 nm
| 1.467 | |||
Point Discontinuities
| 1310 nm
| ≤0.05 | [dB] | |
1550 nm
| ≤0.05 | [dB] | ||
Macro Bending Induced Attenuation | ||||
10 Turns Around a Mandrel @ 15mm Radius | 1550 nm | ≤0.25 | [dB] | |
10 Turns Around a Mandrel @ 15mm Radius | 1625 nm | ≤1.00 | [dB] | |
1 Turn Around a Mandrel @ 10mm Radius | 1550 nm | ≤0.75 | [dB] | |
1 Turn Around a Mandrel @ 10mm Radius | 1625 nm | ≤1.50 | ||
Geometrical Characteristics | ||||
Cladding Diameter | 125.0±0.7 | [µm] | ||
Cladding Non-Circularity | ≤0.7 | [%] | ||
Coating Diameter | 245±5 | [µm] | ||
Coating/Cladding Concentricity Error | ≤12.0 | [µm] | ||
Coating Non-Circularity | ≤6.0 | [%] | ||
Core/Cladding Concentricity Error | ≤0.5 | [µm] | ||
Curl (Radius) | ≥4 | [m] | ||
Delivery Length | 2.1 to 50.4 | [km/reel] | ||
Environmental Characteristics | 1310 nm, 1550 nm & 1625 nm | |||
Temperature Dependence (Induced Attenuation) | - 60°C to +85°C | ≤0.05 | [dB/km] | |
Temperature Humidity Cycling (Induced Attenuation) | -10°C to +85°C, 98% RH | ≤0.05 | [dB/km] | |
Damp Heat Dependence (Induced Attenuation) | 85°C and 85% RH, for 30days | ≤0.05 | [dB/km] | |
Water Soak Dependence (Induced Attenuation) | 23°C, for 30days | ≤0.05 | [dB/km] | |
Dry Heat Aging | 85°C | ≤0.05 | [dB/km] | |
Mechanical Characteristics | ||||
Proof Test | ≥9.0 | [N] | ||
≥1.0 | [%] | |||
≥100 | [Kpsi] | |||
Coating Strip Force | Typical Average Force | 1.5 | [N] | |
Peak Force | ≥1.3 & ≤8.9 | [N] | ||
Dynamic Stress Corrosion Susceptibility Parameter (Nd, Typical) | ≥27 | |||
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