Low Water Peak Single-Mode Fiber (G.652.D)
Overview
G.652.D single-mode fiber offers low attenuation and dispersion from 1260–1625 nm, minimizes water peak loss, extends E-band performance, and supports high-speed, multi-channel transmission—making it ideal for modern, high-capacity optical network construction.
Key Features
- Lower water peak value
- Lower PMD (Polarization Mode Dispersion) values
- Operates within an extended wavelength range including the E-band
- Suitable for low-cost coarse wavelength division multiplexing (CWDM) systems
- Supports upgrades to dense wavelength division multiplexing (DWDM) systems
- Precise geometric dimensions control, resulting in low fusion splice losses
- Superior coating protection with excellent stripping performance
Standards
- ITU-T G.652.D
- IEC 60793-2-50 B1.3
Applications
- Backbone network
- Local network
- Access network
- Large enterprise network
Specifications
|
Features |
Conditions |
Value |
Unit |
|
Optical Requirements |
|||
|
Attenuation |
1310 nm |
≤0.34 |
dB/km |
|
1383 nm |
≤0.32 |
dB/km |
|
|
1550 nm |
≤0.20 |
dB/km |
|
|
1625 nm |
≤0.22 |
dB/km |
|
|
Dispersion Coefficient |
1550 nm |
≤18 |
ps/(nm·km) |
|
1625 nm |
≤22 |
ps/(nm·km) |
|
|
Zero Dispersion Wavelength |
- |
1300~1324 |
nm |
|
Zero Dispersion Slope |
- |
≤0.092 |
ps/(nm2·km) |
|
PMD Link Design Value (M=20, Q=0.01%) |
- |
≤0.1 ≤0.06 |
ps/ ps/ |
|
Cable Cutoff Wavelength (λcc) |
- |
≤1260 |
nm |
|
Mode Field Diameter (MFD) |
1310 nm |
9.2±0.4 |
μm |
|
1550 nm |
10.4±0.5 |
μm |
|
|
Effective Group Index of Refraction (Neff) |
1310 nm |
1.4682 |
- |
|
1550 nm |
1.4688 |
- |
|
|
Point Discontinuities |
1310 nm |
≤0.05 |
dB |
|
1550 nm |
≤0.05 |
dB |
|
|
Geometrical Requirements |
|||
|
Cladding Diameter |
- |
125.0±0.7 |
μm |
|
Cladding Non-Circularity |
- |
≤1.0 |
% |
|
Coating Diameter |
- |
245±10 |
μm |
|
Coating-Cladding Concentricity Error |
- |
≤12.0 |
μm |
|
Core-Cladding Concentricity Error |
- |
≤0.6 |
μm |
|
Curl (Radius) |
- |
≥4.0 |
m |
|
Environmental Requirements (1310nm & 1550nm & 1625nm) |
|||
|
Temperature Dependence |
-60 ℃～+85 ℃ |
≤0.05 |
dB/km |
|
Water-Soaked Dependence |
23 ℃, for 30 days |
≤0.05 |
dB/km |
|
Damp Heat Dependence |
85 ℃ and 85% RH, for 30 days |
≤0.05 |
dB/km |
|
Dry Heat |
85 ℃, for 30 days |
≤0.05 |
dB/km |
|
Mechanical Requirements |
|||
|
Proof Test |
- |
≥9.0 |
N |
|
Macro-Bend induced Attenuation 100 turns Ф 60 mm |
1550 nm |
≤0.1 |
dB |
|
1625 nm |
≤0.1 |
dB |
|
|
Coating Strip Force |
Typical Average Force |
1.0~5.0 |
N |
|
Peak Force |
1.3~8.9 |
N |
|
|
Dynamic Stress Corrosion Susceptibility Parameter (Nd) |
- |
≥20 |
- |
|
Delivery Length |
2.1~75.6 |
km/reel |
|
Resources
|
G.652.D optical fiber Datasheet |
