Single-mode fibre optic cables are generally the best choice for New Zealand's high-speed broadband and long-distance data transmission needs.

Recommended Fibre Types

Single-mode fibre (SMF) is ideal for New Zealand because it supports ultra-fast broadband (UFB) and long-distance transmission with minimal signal loss, making it suitable for both residential and commercial installations . It uses a small core (typically 8–10 µm) and a laser light source, allowing data to travel over tens of kilometers without significant attenuation. Multi-mode fibre (MMF) is better for shorter distances, such as within buildings or campuses, due to its larger core (50–62.5 µm) and LED light source. While cheaper and easier to install, it has higher signal loss over long distances, making it less suitable for New Zealand's UFB network .

Cable Construction Considerations

• Armoured vs Non-Armoured: For outdoor or underground installations, especially in areas prone to rodents or mechanical impact, armoured cables with steel or rodent-resistant layers are recommended . Examples include Corrugated Steel Tape Armoured cables or NoR@T rodent-proof dielectric cables.
• Sheath Material: UV-stabilised polyethylene (PE) or Low Smoke Zero Halogen (LS0H) sheaths are preferred for durability and safety in New Zealand's varied climate .
• Loose Tube vs FlexTube: Loose tube cables are common for external installations, while FlexTube or micromodule designs offer higher fibre density and easier handling for large-scale projects .

Local Network Compatibility

New Zealand's UFB network predominantly uses GPON technology, which is compatible with single-mode fibre . This ensures maximum speed, reliability, and future-proofing for high-bandwidth applications like 4K streaming, gaming, and multiple simultaneous users.

Summary Recommendation

For most New Zealand applications:

• Outdoor/long-distance: Single-mode, armoured, loose tube or FlexTube cable with PE or LS0H sheath.
• Indoor/short-distance: Single-mode or multi-mode, non-armoured, with standard protective jackets. Choosing single-mode fibre with appropriate armouring and sheath material ensures high-speed, reliable, and durable connectivity across New Zealand's UFB infrastructure .