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| Property | Parameter | Description |
|---|---|---|
| Optical Fiber Product Name | G652D Low-Loss Fiber | Single-mode optical fiber compliant with ITU-T G.652.D standard, optimized for minimal signal attenuation |
| Fiber Grade & ITU-T Classification | ITU-T G.652.D / IEC 60793-2-50 Type B1.3 | Standard single-mode fiber with low water peak, suitable for full-spectrum transmission from 1260 nm to 1625 nm |
| 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 splice loss across production batches |
| Attenuation Coefficient at 1310 nm | ≤ 0.34 dB/km | Low attenuation at the O-band supports long-haul and metro network deployments with reduced amplification requirements |
| Attenuation Coefficient at 1550 nm | ≤ 0.18 dB/km | Ultra-low attenuation at the C-band enables extended transmission distances in DWDM and coherent optical systems |
| Macrobending Loss Performance | ≤ 0.1 dB at R=30 mm (100 turns, 1550 nm) | Excellent macrobend resistance reduces installation-induced losses in cable ducts, splice closures, and tight routing paths |
| Chromatic Dispersion Coefficient | ≤ 18 ps/(nm·km) at 1550 nm; Zero Dispersion: 1300–1324 nm | Controlled dispersion profile compatible with standard dispersion compensation modules in high-speed transmission links |
| Polarization Mode Dispersion (PMD) | ≤ 0.1 ps/√km (link design value) | Low PMD coefficient supports 10 Gbps and 40 Gbps transmission without additional PMD compensation |
| Batch Qualification Rate | ≥ 99.5% | Stringent in-process quality control and 100% end-of-line optical testing ensure consistent batch-to-batch performance |
| Manufacturing Environment Standards | ISO Class 7 (ISO 14644-1) Cleanroom; Temperature: 22 ± 2 °C; Humidity: 45–60% RH | Controlled cleanroom environment minimizes particulate contamination during fiber drawing and coating processes |
| Core Raw Material Source | High-purity synthetic silica (SiO₂ purity ≥ 99.999%); PCVD / OVD / VAD process | Premium-grade silica preform produced via vapor deposition ensures homogeneous refractive index profile and low impurity levels |
| Packaging Specification | Standard reel: 5 km, 10 km, 25 km per spool; Wooden drum or plastic bobbin available | Reels are individually sealed with moisture-barrier film and labeled with full traceability data including batch number and test report |
| Storage Conditions | Temperature: -20 °C to +60 °C; Humidity: ≤ 85% RH (non-condensing); Avoid direct UV exposure | Proper storage conditions prevent coating degradation and maintain optical and mechanical properties throughout shelf life |
| Valid Shelf Life | ≥ 25 years (under recommended storage conditions) | Hermetically sealed silica core and dual-layer acrylate coating provide long-term protection against hydrogen aging and moisture ingress |
| Application Scenarios | FTTH/FTTX access networks; Long-haul backbone; Metro DWDM; 5G fronthaul/backhaul; Data center interconnect | |
| Compliance & Certification | ITU-T G.652.D; IEC 60793-2-50; Telcordia GR-20; RoHS 2011/65/EU; REACH compliant | Full compliance with international telecom and environmental standards facilitates global project qualification and procurement approval |
| Minimum Order Quantity (MOQ) | 50 km per order | Flexible MOQ policy available for qualified system integrators and long-term contract customers upon negotiation |
| Monthly Supply Capacity | ≥ 500,000 km/month | Large-scale production capacity with dedicated inventory buffer ensures on-time delivery for major infrastructure rollout projects |
Initial reel labeling inconsistency — resolved quickly by supplier
Ordered 6,000 km of G652D low-loss fiber for a municipal broadband project in Ohio. On arrival, we found that approximately 8% of reels had inconsistent length labeling that didn't match the packing list, which created inventory tracking issues during installation planning. We raised this with the supplier immediately. To their credit, they responded within 4 hours, provided corrected documentation the same day, and offered a partial credit for the administrative inconvenience. Fiber performance itself was fine — attenuation at 1550 nm measured ≤0.20 dB/km as specified. Issue resolved, but QC on labeling should be tightened.
Ordered 6,000 km of G652D low-loss fiber for a municipal broadband project in Ohio. On arrival, we found that approximately 8% of reels had inconsistent length labeling that didn't match the packing list, which created inventory tracking issues during installation planning. We raised this with the supplier immediately. To their credit, they responded within 4 hours, provided corrected documentation the same day, and offered a partial credit for the administrative inconvenience. Fiber performance itself was fine — attenuation at 1550 nm measured ≤0.20 dB/km as specified. Issue resolved, but QC on labeling should be tightened.
