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This flat twin-core distribution cable (GJFJBV) features two 900μm tight-buffered fibers placed side by side, reinforced with aramid yarn strength members, and sheathed with a flame-retardant LSZH jacket. The compact flat profile measures 1.85×3.8 mm and weighs only 8.0 kg/km, making it ideal for indoor distribution and patch cord applications. It supports both single-mode and multimode fiber types (50/125 or 62.5/125 μm) with low attenuation (≤1.5 dB/km at 1300 nm). The cable offers short-term tension of 120 N, crush resistance of 500 N/100mm, and a minimum bending radius of 30 mm. Operating temperature ranges from -20 °C to +70 °C. Perfect for FTTH terminals, data center patching, and weak current cabling systems.
1. Compact Flat Profile for High-Density Indoor Patching
The cable’s flat design (1.85×3.8 mm) and lightweight construction (8.0 kg/km) allow it to be easily routed through narrow spaces, cable trays, and patch panels. The two fibers are placed side by side, reducing bulk compared to round duplex cables. This space-saving shape enables higher port density in FTTH terminals, optical distribution frames, and data center cabinets, improving airflow and cable management.
2. Robust Aramid Yarn Strength for Pulling and Handling
Reinforced with aramid yarn strength members, the cable provides short-term tension of 120 N and crush resistance of 500 N/100mm. This ensures reliable protection during installation and maintenance, preventing fiber stress or breakage. The aramid yarn also offers excellent cut-through resistance, making the cable durable enough for frequent re-routing in active network environments without compromising signal integrity.
3. Flame-Retardant LSZH Jacket for Indoor Fire Safety
The orange LSZH (Low Smoke Zero Halogen) jacket meets strict fire safety standards, emitting minimal toxic smoke and no corrosive halogens when exposed to flame. This makes the cable suitable for use in public buildings, schools, hospitals, and data centers where human safety and equipment protection are critical. The jacket also resists UV and aging, ensuring long-term reliability in indoor installations.
4. Excellent Bend Performance for Tight Routing
With a minimum bending radius of only 30 mm, this cable can be routed around corners, through ducts, and inside equipment enclosures without signal degradation. The tight buffered 900μm fibers are protected against micro-bends, maintaining low attenuation (≤1.5 dB/km at 1300 nm for multimode versions). This flexibility simplifies installation in space-limited environments such as home wiring and office networks.
5. Versatile Fiber Options for Multiple Applications
The cable supports both single-mode and multimode fibers (50/125 or 62.5/125 μm), making it adaptable to a wide range of networks – from FTTH and LAN to security systems. The white and yellow tight buffer colors provide easy fiber identification during termination. Operating temperature ranges from -20 °C to +70 °C, ensuring reliable performance in diverse indoor climates. This versatility reduces inventory complexity for installers.
G652D fiber information
■ Mode field diameter (1310nm):9.2μm±0.4μm.
■ Mode field diameter (1550nm):10.4μm±0.8μm.
■ Cladding diameter:125μm±1.0μm.
■ Coating diameter:245μm±7μm.
■ Cut off wavelength of cabled fiber (λcc): ≤1260μm
■ Attenuation at 1310nm:≤0.35dB/km.
■ Attenuation at 1550nm:≤0.21dB/km.
■ Bending loss at 1550nm (100 turns, 30mm radius):≤0.05dB.
■ Dispersion in the range 1288 to 1339nm：≤3.5ps/(nm·km).
■ Dispersion at 1550nm:≤18ps/(nm·km).
■ Dispersion slope at zero dispersion wavelength:≤0.092ps/(nm2·km).
