Single-mode fibre, E9/125/250, G.657.A2

bend optimized

in accordance with ITU-T G.657.A2

1 Core
2 Cladding
3 Coating


Bend insensitive single-mode fibre with improved macrobending properties for the home connection and for the cabling in FTTH access networks (Fibre-to-the-home).
Full-spectrum singlemode fibre, suitable for the operating wavelengths in all FTTx networks.
Fully compatible with (and even exceeding) the standards ITU-T G.652.D and ITU-T G.657.A1.
Permitted bending radius: up to 7.5 mm
Home connection, FTTH access network, FTTx indoor cabling.
Transmission Characteristics
Maximum attenuation (cabled)[dB/km]0.360.36*0.220.25
  * post hydrogen aging performance
Maximum Chromatic Dispersion[ps/(nm x km)]3,5 1823
Zero Dispersion Wavelength λ0[nm]1304 ≤ λ0 ≤ 1324   
Maximum Zero Dispersion Slope So[ps/(nm2 x km)]0.092   
Mode-Field Diameter[μm]8.6 +/- 0.4  9.6  +/- 0.5 
Maximum Cable Cutoff   Wavelength λcc[nm]1260   
Maximum Polarisation Mode Dispersion (PDM)[ps/√km]0.2 0.2 
Refractive index 1.4670 1.4677 
Geometrical and mechanical characteristics
Cladding diameter[μm]125 +/- 0.7
Maximum Core / Cladding Concentricity Error[μm]0.5
Maximum Cladding   Non-Circularity[%]0.7
Coating diameter[μm]242 +/- 5
Maximum Cladding/Coating Concentricity Error[μm]12
Operating temperature range[°C]-60 up to +85
Test load[kpsi]100


Macrobending characteristics
Number   of windings and bend radiusWavelengthMax. induced attenuation
1 turn      x      7.5 mm1550 nm≤ 0.4 dB
1 turn      x      7.5 mm1625 nm≤ 0.8 dB

Post hydrogen aging

IEC 60793-2-50-C.5

Fiber specifications

ITU-T G.657.A2, IEC 60793-2-50 Category B-657.A2


Product Datasheet
Tender text


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