SWA Underwater Fiber Optic Cable: Reliable Subsea Connectivity
Underwater fiber optic cables face harsher conditions than terrestrial cables, demanding higher reliability. The SWA (Steel Wire Armored) underwater fiber optic cable is specifically designed for subsea deployments, offering robust protection and ensuring dependable performance in rivers, lakes, and coastal areas. HOC produces these cables with 48, 96, and 144 core options.
Description
Underwater fiber optic cables operate in extremely challenging environments, requiring greater reliability than direct buried cables. Repairing underwater faults is complex and costly, making robust construction paramount. These cables utilize steel wire armoring (SWA) for enhanced tensile and impact resistance. The cable sheath is carefully selected based on the specific hydrogeological conditions of the deployment location.
Application
This cable is suitable for underwater, climbing, and direct burial applications.
Features
- Steel wire armoring (SWA) for improved tensile and impact resistance
- Double PE sheath for excellent moisture resistance
- Good hydrolysis resistance and high strength
- Water-blocking tape and materials for added protection
- Good mechanical properties and temperature characteristics
- Loose tube filled with special tube filling compound for critical fiber protection
- Crush resistance and flexibility
Optical Characteristics
| Optical Characteristics | G.652 | G.655 | 50/125μm | 62.5/125μm | |
|---|---|---|---|---|---|
| Attenuation (+20℃) | @850nm | ≤3.0 dB/km | ≤3.3 dB/km | ||
| @1300nm | ≤1.0 dB/km | ≤1.0 dB/km | |||
| @1310nm | ≤0.36 dB/km | ≤0.40 dB/km | @1310nm | ||
| @1550nm | ≤0.22 dB/km | ≤0.23dB/km | |||
| Bandwidth | @850nm | ≥500 MHz·km | ≥200 MHz·km | ||
| @1300nm | ≥500 MHz·km | ≥500 MHz·km | |||
| Numerical Aperture | 0.200±0.015 NA | 0.275±0.015 NA | |||
| Cable Cut-off Wavelength λcc | ≤1260nm | ≤1450nm | |||
Technical Parameters
| Fiber Count | Loose Tubes + Fillers | Fibers per Tube | Loose Tube Diameter (mm) | CSM Diameter (mm) | Inner Jacket Thickness (mm) | Outer Jacket Thickness (mm) | Cable Diameter (mm) | Weight (kg/km) | Min. Bending Radius Static/Dynamic | Tensile Short Term | Crush Short Term |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 8 | 1 | 8 | 3.0±0.1 | – | 1.0±0.1 | 1.5±0.1 | 11.8±0.5 | 230 | 12.5D/25D | 4000N |
Conclusion
The SWA underwater fiber optic cable is engineered for the rigors of subsea environments. Its robust construction, incorporating steel wire armoring and a double PE sheath, ensures high reliability and long-term performance. This cable is critical for establishing reliable communication links across bodies of water, supporting essential infrastructure and data transmission needs.
