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G657A2 Low Loss Optical Fiber For FTTH Networks
China
Supplier's customization ability
- Drawing-based customization
- Sample-based customization
- Full customization
Minimum order quantity: 1 km
Shipping total: To be negotiated
- Lead time:
- confirmed with the quotation
- Packaging:
- standard export packing
- Samples:
- available on request
Product details
Technical Specifications of G657A2 Low Loss Optical Fiber
| 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 |
G657A2 Low Loss Optical Fiber For FTTH Networks
G657A2 Low Loss Optical Fiber has established itself as the industry benchmark for fiber-to-the-home (FTTH) deployments, indoor wiring, and last-mile access network installations worldwide. Engineered to deliver exceptional bend insensitivity combined with ultra-low attenuation, this single-mode optical fiber enables network operators and telecom contractors to route cables through tight conduits, sharp corners, and confined spaces without compromising signal integrity. As global broadband demand accelerates and carriers push fiber deeper into residential and commercial buildings, the G657A2 bend-insensitive fiber has become the preferred solution for high-density MDU installations, FTTB projects, and next-generation passive optical network (PON) infrastructure. Its compatibility with standard SMF connectors and splicing equipment makes it a cost-effective, future-proof choice for both greenfield deployments and legacy network upgrades, driving widespread adoption across Asia-Pacific, Europe, and North American markets.
What is G657A2 Low Loss Optical Fiber?
G657A2 Low Loss Optical Fiber is a bend-insensitive single-mode fiber defined under the ITU-T G.657.A2 international standard. It is specifically designed to withstand bending radii as tight as 7.5 mm while maintaining low signal attenuation, making it ideal for indoor FTTH routing. Fully backward-compatible with ITU-T G.652.D standard SMF fiber, the G657A2 bend-insensitive fiber offers superior mechanical resilience and optical performance for access network environments.
G657A2 Low Loss Optical Fiber Manufacturing and Production Process
G657A2 optical fiber is manufactured using a precision Modified Chemical Vapor Deposition (MCVD) or Outside Vapor Deposition (OVD) process in ISO-certified, cleanroom-grade production facilities. The preform drawing process is conducted under tightly controlled temperature and tension parameters to ensure consistent core geometry and refractive index profiles. Each production batch undergoes rigorous proof testing, attenuation screening, and geometrical verification. Finished fibers comply with ITU-T G.657.A2, IEC 60793-2-50, and RoHS directives, with full traceability documentation provided for every reel.
G657A2 Low Loss Optical Fiber Technical Specifications
The G657A2 low loss fiber delivers an attenuation of ≤0.35 dB/km at 1310 nm and ≤0.20 dB/km at 1550 nm. Minimum bend radius performance: 7.5 mm at 1 turn with additional attenuation ≤0.1 dB at 1550 nm. Core diameter is 8.6–9.5 µm, cladding diameter 125.0 ±0.7 µm, and coating diameter 245 ±10 µm. Cable cutoff wavelength is ≤1260 nm. Zero-dispersion wavelength ranges from 1300 nm to 1324 nm, with a dispersion slope ≤0.092 ps/(nm²·km). Operating temperature range: −60°C to +85°C.
Get a Competitive Quote for G657A2 Low Loss Optical Fiber
Whether you are sourcing G657A2 Low Loss Optical Fiber for large-scale FTTH rollouts, data center structured cabling, or bulk telecom procurement, our team delivers competitive wholesale pricing, fast global logistics, and full certification documentation. Partner with a trusted fiber supplier to keep your network projects on schedule and within budget.
- 24/7 expert optical communication engineer support
- Full ITU-T, ISO, RoHS compliance guarantee for all batches
- Exclusive wholesale discounts for bulk telecom, FTTH and data center orders
- Complete technical data sheets and on-site deployment guidance included
Contact us today to get your free quote and full specification sheet within 24 hours!
