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| Property | Parameter | Description |
|---|---|---|
| Optical Fiber Product Name | G657A2 Low Loss Optical Fiber | Bend-insensitive single-mode optical fiber with ultra-low attenuation performance |
| Fiber Grade & ITU-T Classification | ITU-T G.657.A2 | Category A2 bend-insensitive single-mode fiber, fully compatible with G.652.D |
| Core & Cladding Diameter Range | Core: 8.6–9.5 μm / Cladding: 125.0 ± 0.7 μm | Standard cladding diameter ensures compatibility with existing connectors and splicing equipment |
| Attenuation Coefficient at 1310nm | ≤ 0.35 dB/km | Measured per IEC 60793-1-40; suitable for short to medium distance transmission |
| Attenuation Coefficient at 1550nm | ≤ 0.20 dB/km | Low-loss performance at C-band wavelength for long-haul FTTH and access networks |
| Macrobending Loss Performance | R=7.5 mm, 1 turn: ≤ 0.5 dB at 1550nm; ≤ 1.0 dB at 1625nm | Exceeds G.657.A2 standard; ideal for tight-bend indoor routing and micro-duct deployment |
| Chromatic Dispersion Coefficient | ≤ 18 ps/(nm·km) at 1550nm | Zero dispersion wavelength: 1300–1324 nm; dispersion slope ≤ 0.092 ps/(nm²·km) |
| Batch Qualification Rate | ≥ 99.5% | Each production batch undergoes 100% optical parameter screening and tensile proof testing |
| Manufacturing Environment Standards | ISO Class 7 (ISO 14644-1) Cleanroom | Controlled temperature, humidity, and particulate environment throughout fiber drawing process |
| Core Raw Material Source | High-purity synthetic SiO₂ preform (OH⁻ content < 1 ppb) | Preform manufactured via OVD or MCVD process; ensures consistent refractive index profile |
| Packaging Specification | Standard spool: 2 km, 4 km, 6 km, 12 km per reel; customizable | Wooden or plastic bobbin with moisture-proof sealed carton; color-coded fiber end labeling |
| Storage Conditions | Temperature: -40°C to +70°C; Relative Humidity: ≤ 85% RH (non-condensing) | Store away from direct sunlight, corrosive gases, and mechanical stress; keep sealed until use |
| Valid Shelf Life | ≥ 25 years (installed); 2 years (sealed storage) | Hermetic coating and proof-test tension ≥ 100 kpsi ensure long-term mechanical reliability |
| Application Scenarios | FTTH drop cables, indoor wiring, MDU/MTU installations, micro-duct networks, patch cord manufacturing | Optimized for tight-bend environments in last-mile access and in-building fiber distribution |
| Compliance & Certification | ITU-T G.657.A2, IEC 60793-2-50 (B6a2), RoHS 2011/65/EU, REACH compliant | Third-party test reports available; CE marking applicable for EU market entry |
| Minimum Order Quantity (MOQ) | 500 km per order | Mixed reel lengths accepted above MOQ threshold; sample reels (2 km) available for qualification |
| Monthly Supply Capacity | ≥ 500,000 km/month | Supported by automated drawing towers with real-time SPC monitoring and full traceability records |
Initial documentation gap resolved promptly—fiber quality is good
Ordered 25,000 meters of G657A2 for a last-mile access upgrade. The fiber itself performs to ITU-T G.657.A2 spec—attenuation and bend radius both confirmed in our lab. However, the initial shipment was missing batch-level traceability certificates which our procurement compliance requires. Raised the issue with the account team; full documentation was emailed within 48 hours and hard copies followed with the next shipment. The technical quality is not in question. Marking 3 stars for the initial paperwork gap, but the responsive resolution gives us confidence to continue the supplier relationship.
Ordered 25,000 meters of G657A2 for a last-mile access upgrade. The fiber itself performs to ITU-T G.657.A2 spec—attenuation and bend radius both confirmed in our lab. However, the initial shipment was missing batch-level traceability certificates which our procurement compliance requires. Raised the issue with the account team; full documentation was emailed within 48 hours and hard copies followed with the next shipment. The technical quality is not in question. Marking 3 stars for the initial paperwork gap, but the responsive resolution gives us confidence to continue the supplier relationship.
