English
YOFC LAPOSH® fibre is the commercialized fibre that has the largest effective area in the G.655 series. The fibre is suitable for application of high output power Erbium Doped Fibre Amplifier (EDFA) and multi-channel Dense Wavelength Division Multiplex (DWDM), and can be effectively applied in the high bit-rate both single-and multi-channel, long distance digital transmission links even without dispersion compensation.
LAPOSH® Large Effective Area High Capacity Positive Dispersion Shifted Single-mode Fibre
YOFC LAPOSH® fibre (Large Effective Area High Capacity Positive Dispersion Shifted Single-mode Fibre) is comprehensively optimized for attenuation and dispersion performance at the 1550 nm operating wavelength. The fibre has the lowest attenuation and moderate
dispersion at 1550 nm, which enables excellent performance in multi-channel Dense Wavelength Division Multiplex (DWDM) systems traditionally operating in the C-band (1530 nm -1565 nm), as well as in emerging L-band (1565 nm -1625 nm) systems.
Details
Specification
Documents
Applications
Product standards
YOFC LAPOSH® fibre complies with or exceeds the ITU-T G.655.C/D recommendation and IEC-60793-2-50 B4.c/d Optical Fibre Specification.
YOFC tightens many parameters of fibre products so as to offer more conveniences to customers.
Characteristics
• Being applicable in the high bit-rate operation across 1530-1565 nm and 1565-1625 nm band
• Large effective area ensures good economic return from the transmission system
• Low attenuation, low dispersion, low PMD and low zero dispersion slope that satisfy the demand of transmission links
• Low bending induced loss at 1550 nm and at the moresensitive 1625 nm wavelength
Specifications
|
Characteristics |
Conditions |
Specified values |
Units |
|
|---|---|---|---|---|
|
Optical Characteristics |
||||
|
Attenuation |
1550nm |
≤0.22 |
[dB/km] |
|
|
1625nm |
≤0.24 |
[dB/km] |
||
|
Attenuation vs. Wavelength Max. α Difference |
1525-1575nm, in reference to 1550nm |
≤0.02 |
[dB/km] |
|
|
Dispersion Coefficient |
1530-1565nm |
2.0-6.0 |
[ps/(nm·km)] |
|
|
1565-1625nm |
4.5-11.2 |
[ps/(nm·km)] |
||
|
Zero Dispersion Wavelength(λ0) |
-- |
≤1520 |
[nm] |
|
|
Dispersion Slope |
1550nm |
≤0.084 |
[ps/(nm2·km)] |
|
|
Typical dispersion slope |
1550nm |
0.075 |
[ps/(nm2·km)] |
|
|
PMD |
Maximum Individual Fibre |
-- |
≤0.2 |
[ps/√km] |
| Link Design Value（M=20，Q=0.01%) |
-- |
≤0.08 |
[ps/√km] |
|
| Typical Value |
-- |
0.04 |
[ps/√km] |
|
|
Cable Cutoff Wavelength (λCC) |
-- |
≤1450 |
[nm] |
|
|
Mode field diameter (MFD) |
1550nm |
9.1-10.1 |
[μm] |
|
|
Effective Group Index of Refraction（Neff） |
1550nm |
1.469 |
-- |
|
|
1625nm |
1.469 |
-- |
||
|
Point Discontinuities |
1550nm |
≤0.05 |
[dB] |
|
|
Geometrical Characteristics |
||||
|
Cladding Diameter |
-- |
125.0±0.7 |
[μm] |
|
|
Cladding Non-Circularity |
-- |
≤1.0 |
[%] |
|
|
Coating Diameter |
-- |
235-255 |
[μm] |
|
|
Coating-Cladding Concentricity Error |
-- |
≤12.0 |
[μm] |
|
|
Coating Non-Circularity |
-- |
≤6.0 |
[%] |
|
|
Core-Cladding Concentricity Error |
-- |
≤0.6 |
[μm] |
|
|
Curl(Radius) |
-- |
≥4 |
[m] |
|
|
Delivery Length |
-- |
Up to 25.2 |
[km/reel] |
|
|
Environmental Characteristics 1550nm & 1625nm |
||||
|
Temperature Dependence Induced Attenuation |
-60℃ to +85℃ |
≤0.05 |
[dB/km] |
|
|
Temperature-Humidity Cycling Induced Attenuation |
-10°C to +85°C, 98% RH |
≤0.05 |
[dB/km] |
|
|
Watersoak Dependence Induced Attenuation |
23°C，for 30 days |
≤0.05 |
[dB/km] |
|
|
Damp Heat Dependence Induced Attenuation |
85°C , 85% RH，for 30 days |
≤0.05 |
[dB/km] |
|
|
Dry Heat Aging |
85℃，30 days |
≤0.05 |
[dB/km] |
|
|
Mechanical Specifications |
||||
|
Proof Test |
-- |
≥9.0 |
[N] |
|
|
-- |
≥1.0 |
[%] |
||
|
-- |
≥100 |
[kpsi] |
||
|
Macro-bend Induced Attenuation |
100 Turns Around a Mandrel of 30 mm Radius |
1625nm |
≤0.05 |
[dB] |
| 100 Turns Around a Mandrel of 25 mm Radius |
1550nm |
≤0.05 |
[dB] |
|
| 1 Turn Around a Mandrel of 16 mm Radius |
1550nm |
≤0.05 |
[dB] |
|
|
Coating Strip Force |
typical average force |
1.5 |
[N] |
|
|
peak force |
1.3-8.9 |
[N] |
||
| Dynamic Fatigue Parameter(nd) |
-- |
≥20 |
-- |
|
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