FarBand® Ultra fibre complies with or exceeds the ITU-T G.654.B/E recommendation and IEC 60793-2-50 B1.2 specification.
• Larger effective area reduces nonlinear effect and enables higher signal power launched into the transmission system.
• Enable higher transmission speeds with more wavelengths over ultra long-haul distances.
• Lower attenuation level which meets the demand of extended long distance transmission
• Reduce number of repeaters and minimize CAPEX and OPEX.
• Lower bending induced loss to meet complicated deployment conditions and cable structures.
Based on the formula of OSNR, lower attenuation and larger effective area will increase OSNR of optical transmission system. And FOM (Figure of Merit) is established to calculate the contribution of effective area and attenuation. As shown in the table, YOFC ultra low loss and large effective area fibre can provide greater performance improvement than ultra low loss fibre below, or low loss and large effective fibre.
|
Fibre Type |
Att. |
Aeff. |
FOM |
|---|---|---|---|
|
SSMF(Ref.) |
0.2 |
80 |
/ |
|
LL |
0.18 |
80 |
1.6 |
|
ULL |
0.17 |
80 |
2.3 |
|
ULL |
0.15 |
80 |
3.8 |
|
LL-LAF |
0.18 |
130 |
4.9 |
|
ULL-LAF |
0.16 |
110 |
5.8 |
|
ULL-LAF |
0.16 |
130 |
6.4 |
|
Characteristics |
Conditions | Specified values | Units | |||
|---|---|---|---|---|---|---|
|
Optical Specifications |
||||||
|
Nominal Effective Area |
1550nm |
110 |
125 |
[μm2] |
||
|
Mode Field Diameter |
1550nm |
11.4-12.2 | 12.0-13.0 |
[μm] |
||
|
Attenuation |
1550nm |
≤0.17 |
[dB/km] |
|||
|
1625nm |
≤0.20 |
[dB/km] |
||||
|
Attenuation vs. Wavelength Max. α difference |
1525-1575nm, in reference to 1550nm |
≤0.02 |
[dB/km] |
|||
| 1550-1625nm, in reference to 1550nm |
≤0.03 |
[dB/km] |
||||
|
Dispersion Coefficient |
1550nm |
≤23 |
[ps/nm·km] |
|||
|
1625nm |
≤27 |
[ps/nm·km] |
||||
|
Dispersion Slope |
1550nm |
0.050-0.070 |
[ps/nm2·km] |
|||
|
PMD |
Maximum Individual Fibre |
-- |
≤0.1 |
[ps/√km] |
||
| Link Design Value（M=20，Q=0.01%) |
-- |
≤0.06 |
[ps/√km] |
|||
| Typical Value |
-- |
0.04 |
[ps/√km] |
|||
|
Cable Cutoff Wavelength (λCC) |
-- |
≤ 1520 |
[nm] |
|||
|
Effective Group Index of Refraction |
1550nm |
1.463 |
1.465 |
-- |
||
|
Point Discontinuities |
1550nm |
≤0.05 |
[dB] |
|||
|
Geometrical Specifications |
||||||
|
Cladding Diameter |
-- |
125.0±1.0 |
[μm] |
|||
|
Cladding Non-Circularity |
-- |
≤1.0 |
[%] |
|||
|
Coating Diameter |
-- |
235-255 |
[μm] |
|||
|
Coating-Cladding Concentricity |
-- |
≤12 |
[μm] |
|||
|
Coating Non-Circularity |
-- |
≤6 |
[%] |
|||
|
Core-Cladding Concentricity |
-- |
≤0.6 |
[μm] |
|||
|
Fibre Curl(Radius) |
-- |
≥4 |
[m] |
|||
|
Delivery Length1 |
-- |
Up to 25.2 |
[km/reel] |
|||
|
Environmental Specifications @1550nm & 1625nm |
||||||
|
Temperature Dependence |
-60℃ to +85℃ |
≤0.05 |
[dB/km] |
|||
|
Temperature-Humidity Cycling |
-10°C to +85°C, 98% RH |
≤0.05 |
[dB/km] |
|||
|
Water Immersion |
23°C，for 30 days |
≤0.05 |
[dB/km] |
|||
|
Damp Heat |
85°C , 85% RH，for 30 days |
≤0.05 |
[dB/km] |
|||
|
Heat Aging |
85℃，30 days |
≤0.05 |
[dB/km] |
|||
|
Mechanical Specifications |
||||||
|
Proof Test2 |
-- |
≥9.0 |
[N] |
|||
|
-- |
≥1.0 |
[%] |
||||
|
-- |
≥100 |
[kpsi] |
||||
| Macro-bend Induced Loss | 100 Turns Around a Mandrel of 30 mm Radius |
1550nm |
≤0.10 |
[dB] |
||
|
1625nm |
≤0.10 |
[dB] |
||||
|
Coating Strip Force |
typical average force |
1.5 |
[N] |
|||
|
peak force |
1.3-8.9 |
[N] |
||||
|
Dynamic Fatigue Parameter(nd) |
-- |
≥20 |
-- |
|||
Remark： 1. Other delivery lengths are available. 2. Higher proof test level is available.
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