G.657.A2 Single-Mode Fiber
Bending insensitive single-mode optical fiber (G.657.A2) bears the entire characteristics of dispersion 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.
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Fiber
Description
Bending insensitive single-mode optical fiber (G.657.A2) bears the entire characteristics of dispersion 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.
Standards
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.
Characteristics
G.657.A2 Single-Mode Fiber features ultra-low bending loss and high stability, ideal for FTTH, indoor wiring and narrow-space optical network deployment.
Product Images

Technical parameters
Geometrical features
| Item | Condition | Unit | Value |
| Cladding diameter | - | μm | 125±0.7 |
| Cladding Non-circularity | - | % | ≤1 |
| Coating diameter | - | μm | 245±10 |
| Cladding/coating concentricity error | - | μm | ≤12.5 |
| Coating Non-circularity | - | % | ≤4 |
| Core/cladding concentricity error | - | μm | ≤0.5 |
| Warping degree (radius) | - | m | ≥4 |
Mechanical characteristics
| Item | Condition | Unit | Value |
| Macro bend Loss additional attenuation of 15mm radius, 10 turns | 1550nm | dB | ≤0.03 |
| 1625nm | dB | ≤0. 1 | |
| Macro bend Loss additional attenuation of 10mm radius, 1 turn | 1550nm | dB | ≤0. 1 |
| 1625nm | dB | ≤0.2 | |
| Damp Heat | 85 ± 2℃, 85% relative humidity, 30 days | dB/km | ≤0.05 |
| Heat Aging | 85 ± 2℃ for 30 days | dB/km | ≤0.05 |
| Temperature Dependence | -60℃ to 85℃, with 2 cycles | dB/km | ≤0.05 |
| Water Immersion | 23 ± 5℃ for 30 days | dB/km | ≤0.05 |
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