TKF single mode fibres are manufactured using VAD manufactured preforms, currently considered the best process for manufacturing of single mode optical fibres. With these fibres TKF offers an excellent telecommunication medium, not only for long-haul applications but also for expanding access networks. TKF offers 3 qualities that all meet the requirements of the ITU-T G.652.D standard. The WideBand fibre designed for 10 and 40 Gbit/s systems has excellent bending properties and is equipped for CWDM, operating in the full wavelength range from 1285 to 1625nm. The Premium WideBand adds a reduced water peak and enhanced geometrical properties for lower connection losses. Our advanced and unique solution is the Premium WideBand Plus, a "no water peak fibre" with the best geometrical and optical properties for the lowest connector losses.
| Dimensions single mode fibre | Units | Matched cladding single mode optical fibres | ||||
| Standard / Available quality | - | Requirements (ITU-T G.652.D & IEC 60793, type B1.3) |
WideBand | Premium WideBand | Premium WideBand Plus |
|
| Core/cladding concentricity | µm | ≤0.6 | ≤0.6 | ≤0.5 | ≤0.4 | |
| Cladding diameter | µm | 125.0±1 | 125.0±0.7 | 125.0±0.6 | 125.0±0.5 | |
| Cladding non-circularity | % | ≤1.0 | ≤1.0 | ≤0.8 | ≤0.6 | |
| Coating diameter | µm | 245±10 | 245±5 | 245±5 | 245±5 | |
| Coating/cladding concentricity | µm | ≤12.5 | ≤12 | ≤10 | ≤8 | |
| Optical Properties single mode fibre | Units | Requirements (ITU-T G.652.D & IEC 60793, type B1.3) | WideBand | Premium WideBand | Premium WideBand Plus | |
| Mode field diameter | 1310 nm | µm | 8.6 - 9.5 tolerance ± 0.6 |
9.2 ± 0.5 | 9.2 ± 0.4 | 9.2 ± 0.3 |
| 1550 nm | µm | - | 10.4 ± 0.6 | 10.4 ± 0.5 | 10.4 ± 0.4 | |
| Cut-Off Wavelength | Cabled fibre | nm | ≤ 1260 | ≤ 1260 | ≤ 1260 | ≤ 1260 |
| Zero dispersion Wavelength | nm | 1300 - 1324 | 1300 - 1322 | 1300 - 1322 | 1300 - 1322 | |
| Zero dispersion slope | ps/nm2.km | ≤ 0.092 | ≤ 0.092 | ≤ 0.091 | ≤ 0.090 | |
| Dispersion coefficient | 1285-1330nm | ps/nm.km | - | ≤ 3.4 | ≤ 3.2 | ≤ 3.0 |
| 1550nm | ps/nm.km | - | ≤ 18 | ≤ 17 | ≤ 16.5 | |
| 1625nm | ps/nm.km | - | ≤ 22 | ≤ 21 | ≤ 20.5 | |
| PMDQ coefficient | Cabled fibre | ps/√km | ≤ 0.20 | ≤ 0.20 | ≤ 0.20 | ≤ 0.20 |
| Effective Group Refractive Index | 1310/ 1550/ 1625nm | - | 1.465 | 1.465 | 1.465 | |
| Attenuation 1 | 1310nm (α1310) | dB/km | ≤ 0.40 | ≤ 0.35 | ≤ 0.33 | ≤ 0.32 |
| 1383nm (α1383) | dB/km | ≤ α1310-16252 | ≤ 0.34 | ≤ 0.32 | ≤ 0.29 | |
| 1550nm (α1550) | dB/km | ≤ 0.30 | ≤ 0.21 | ≤ 0.20 | ≤ 0.19 | |
| 1625nm (α1625) | dB/km | ≤ 0.40 | ≤ 0.23 | ≤ 0.22 | ≤ 0.21 | |
| Mechanical Properties single mode fibre | Units | Requirements (ITU-T G.652.D & IEC 60793, type B1.3) | WideBand | Premium WideBand | Premium WideBand Plus | |
| Proof test | Fibre strain | % | - | ≥ 1 | ≥ 1 | ≥ 1 |
| Fibre stress | GPa | ≥ 0.69 | ≥ 0.7 | ≥ 0.7 | ≥ 0.7 | |
| Dynamic stress corrosion susceptibility factor nd | Unaged | - | ≥ 20 | ≥ 20 | ≥ 20 | |
| Aged | - | ≥ 20 | ≥ 20 | ≥ 20 | ||
| Bending sensitivity 100 turns Ø50mm | 1550nm | dB | - | ≤ 0.05 | ≤ 0.05 | ≤ 0.05 |
| Bending sensitivity 100 turns Ø60mm | 1625nm | dB | ≤ 0.1 | ≤ 0.05 | ≤ 0.05 | ≤ 0.05 |
| Coating strip force | Average | N | ≥ 1 & ≤ 5 | 3 | 3 | 3 |
| Maximum | N | ≥ 1 & ≤ 8.9 | 1.3 - 8.9 | 1.3 - 8.9 | 1.3 - 8.9 | |
| Fibre Curl | Minimum radius | m | ≥2 | 4 | 4 | 4 |
| 1 Prior to cabling 2 Post hydrogen ageing performance | ||||||
