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| Property | Parameter | Description |
|---|---|---|
| Optical Fiber Product Name | Long Distance Single-Mode Fiber | Single-mode optical fiber engineered for extended transmission distances with minimal signal loss |
| Fiber Grade & ITU-T Classification | ITU-T G.652D / G.654E | Standard single-mode fiber (G.652D) and ultra-low-loss cutoff-shifted fiber (G.654E) for long-haul applications |
| Core & Cladding Diameter Range | Core: 8.2 ± 0.4 μm; Cladding: 125.0 ± 0.7 μm | Tight dimensional tolerance ensures consistent splicing performance and low connector loss |
| Attenuation Coefficient at 1310nm | ≤ 0.34 dB/km | Measured per IEC 60793-1-40; suitable for metro and regional network segments |
| Attenuation Coefficient at 1550nm | ≤ 0.18 dB/km (standard); ≤ 0.16 dB/km (ultra-low-loss) | Optimized for C-band and L-band DWDM long-haul transmission systems |
| Macrobending Loss Performance | ≤ 0.10 dB at R=30 mm (100 turns, 1550nm) | Compliant with IEC 60793-1-47; ensures stability in cable installation and deployment |
| Chromatic Dispersion Coefficient | ≤ 18 ps/(nm·km) at 1550nm; ≤ 3.5 ps/(nm·km) at 1310nm | Low dispersion supports high-speed 100G/400G coherent transmission over long distances |
| Batch Qualification Rate | ≥ 99.5% | Each production batch undergoes 100% OTDR and attenuation testing before shipment |
| Manufacturing Environment Standards | ISO 14644-1 Class 7 Cleanroom; Temperature: 22 ± 2°C; Humidity: 45–55% RH | Controlled environment prevents contamination during preform drawing and coating processes |
| Core Raw Material Source | High-purity synthetic silica (SiO₂ purity ≥ 99.999%) | MCVD/OVD/VAD process-grade silica preform; sourced from certified suppliers |
| Packaging Specification | Standard reel: 25 km/reel; Custom: 5–50 km/reel; Reel diameter: 400 mm | Wooden or plastic reels with moisture-proof wrapping; suitable for sea and air freight |
| Storage Conditions | Temperature: -20°C to +60°C; Humidity: ≤ 85% RH; Avoid direct UV exposure | Store in original packaging on flat surface; keep away from corrosive chemicals |
| Valid Shelf Life | ≥ 20 years (under recommended storage conditions) | Hermetic silica structure ensures long-term mechanical and optical stability |
| Application Scenarios | Long-haul backbone networks, submarine cable systems, DWDM/CWDM transmission, 5G fronthaul/backhaul | Ideal for intercity, transoceanic, and national backbone fiber optic infrastructure |
| Compliance & Certification | ITU-T G.652D / G.654E, IEC 60793-2-50, TIA-492CAAB, RoHS 2.0 | Internationally certified for global telecom operator procurement requirements |
| Minimum Order Quantity (MOQ) | 500 km | Flexible reel configurations available; sample orders (≥ 25 km) accepted for qualification testing |
| Monthly Supply Capacity | 50,000 km/month | Supported by automated drawing towers with real-time quality monitoring systems |
Initial spool labeling issue — resolved promptly, fiber quality is good
We ordered 120 km of G.652D fiber across 6 km spools for a long-haul terrestrial project. The fiber itself tested well — attenuation at 1550 nm at 0.18 dB/km and PMD ≤ 0.09 ps/√km. However, three spools arrived with mismatched batch labels versus the test report documentation, which created traceability concerns for our QA team. After raising the issue, the supplier issued corrected documentation within 48 hours and offered a goodwill discount on our next order. Problem resolved, and we're satisfied with how it was handled.
We ordered 120 km of G.652D fiber across 6 km spools for a long-haul terrestrial project. The fiber itself tested well — attenuation at 1550 nm at 0.18 dB/km and PMD ≤ 0.09 ps/√km. However, three spools arrived with mismatched batch labels versus the test report documentation, which created traceability concerns for our QA team. After raising the issue, the supplier issued corrected documentation within 48 hours and offered a goodwill discount on our next order. Problem resolved, and we're satisfied with how it was handled.
