General-purpose optical cables in Ghana are designed for reliable, long-distance data transmission, typically featuring singlemode or multimode fibers, LSZH jackets, and standardized mechanical and environmental performance.

Cable Structure and Fiber Types

General-purpose optical cables commonly use singlemode (G.652.D) or multimode (OM1, OM2) fibers with a tight-buffered 900µm secondary coating for protection and ease of handling . The fibers are color-coded for identification, typically following a standard sequence (e.g., blue, orange, green, brown, slate, white, red, black, yellow, violet, rose, aqua) to simplify installation and maintenance . The cables are available in 1 to 24 fibers or more, depending on network requirements.

Jacket and Sheath

The outer jacket is usually Low Smoke Zero Halogen (LSZH), providing fire safety and environmental resistance . The jacket color is often white, but other colors can be requested. The sheath is designed to withstand harsh environmental conditions, including underground, aerial, and indoor installations, ensuring long-term durability .

Mechanical and Environmental Performance

General-purpose optical cables are engineered to meet the following performance standards :

• Tensile load: Tested according to sample length, typically 50 meters, for 1 minute without damage.
• Water resistance: No water leakage under standard testing conditions.
• Temperature range: Suitable for typical service conditions over a 25-year lifespan.
• Bending radius: Minimum bending radius specified to prevent fiber attenuation or breakage.

Attenuation and Signal Performance

• Singlemode fibers: Attenuation measured at 1310 nm and 1550 nm, typically ≤0.35 dB/km at 1310 nm and ≤0.22 dB/km at 1550 nm.
• Multimode fibers: Attenuation measured at 850 nm and 1300 nm, typically ≤3.5 dB/km at 850 nm and ≤1.5 dB/km at 1300 nm.
• Designed for minimal signal loss and high bandwidth over long distances .

Dimensions and Packaging

• Fiber count: 1–24 fibers or customized.
• Cable diameter: Varies with fiber count and construction, typically 3–10 mm for tight-buffered designs.
• Standard reel length: 2–3 km per reel, with other lengths available on request.
• Marking: Outer sheath marked with manufacturer, year, cable type, and length intervals (usually 1 m) for easy identification .

Applications

These cables are suitable for:

• Telecommunication networks
• Internet service provider infrastructure
• Broadband expansion and network upgrades
• Indoor, aerial, and underground installations General-purpose optical cables in Ghana are supplied by companies such as Optronics Plus, N17 Ghana, and Legrand Ghana, offering technical support, installation guidance, and customization to meet project-specific requirements .