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G.657A2 Fiber - Premium Manufacturer | Factory Price
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 G.657A2 Fiber
| Property | Parameter | Description |
|---|---|---|
| Product Name | G.657A2 Bend-Insensitive Single-Mode Optical Fiber | Low bend loss single-mode fiber compliant with ITU-T G.657A2 standard |
| Fiber Type | Single-Mode Optical Fiber (SMF) | Fully backward compatible with G.652D standard fiber |
| Standard Compliance | ITU-T G.657A2 / IEC 60793-2-50 Type B6a2 | Also meets requirements of ITU-T G.652D for seamless network integration |
| Mode Field Diameter | 9.2 ± 0.4 µm @ 1310 nm | Ensures compatibility with standard G.652D connectors and splices |
| Cladding Diameter | 125.0 ± 0.7 µm | Standard 125 µm glass cladding for universal connector compatibility |
| Coating Diameter | 245 ± 10 µm | Dual-layer UV-cured acrylate coating for mechanical protection |
| Attenuation | ≤ 0.35 dB/km @ 1310 nm; ≤ 0.20 dB/km @ 1550 nm | Low attenuation for long-distance signal transmission |
| Macrobend Loss (R=7.5 mm) | ≤ 0.5 dB/turn @ 1550 nm; ≤ 1.0 dB/turn @ 1625 nm | Superior bend performance at 7.5 mm bend radius per ITU-T G.657A2 |
| Macrobend Loss (R=10 mm) | ≤ 0.1 dB/turn @ 1550 nm; ≤ 0.2 dB/turn @ 1625 nm | Excellent performance in tight routing environments |
| Chromatic Dispersion | ≤ 18 ps/(nm·km) @ 1550 nm | Zero dispersion wavelength between 1300–1324 nm |
| Cutoff Wavelength | ≤ 1260 nm (cable cutoff) | Ensures single-mode operation across full telecom wavelength range |
| Tensile Strength (Proof Test) | ≥ 0.69 GPa (100 kpsi) | Standard proof test level ensuring fiber mechanical reliability |
| Operating Temperature | -60°C to +85°C | Suitable for indoor, outdoor, and harsh environment deployments |
| Application | FTTH/FTTB/FTTX, indoor wiring, MDU, access networks, tight-buffer cables | Ideal for last-mile connectivity and confined-space fiber routing |
| Certification | ITU-T G.657A2, IEC 60793-2-50, RoHS Compliant, TIA-492AAAD | Internationally certified for global telecom network deployment |
| Packaging | Supplied on reels: 2.0 km, 4.0 km, 5.0 km, or custom lengths | Wooden or plastic reels with moisture-resistant packaging available |
| MOQ | 10 km (custom lengths available upon request) | OEM and bulk supply supported with lead time 2–4 weeks |
G.657A2 Fiber - Premium Manufacturer | Factory Price
G.657A2 Fiber represents the benchmark standard for bend-insensitive single-mode optical fiber in modern telecommunications infrastructure. As fiber-to-the-home (FTTH) deployments accelerate globally, network installers and system integrators demand a fiber type that tolerates tight bends without incurring unacceptable signal loss — and G.657A2 fiber delivers precisely that capability. Compliant with the ITU-T G.657A2 specification, this fiber achieves a minimum bend radius of 7.5 mm while maintaining full backward compatibility with conventional G.652D single-mode fiber, enabling seamless integration into existing networks. Whether routed through conduit-congested riser shafts, installed along baseboard channels, or deployed in micro-duct environments, G.657A2 fiber ensures consistent optical performance across the entire link. Our manufacturing facility operates under ISO 9001:2015 quality management protocols, producing G.657A2 fiber to the most exacting dimensional and optical tolerances. With mill-direct pricing and rapid delivery schedules, we serve carriers, contractors, and OEM cable manufacturers across more than 40 countries.
What is G.657A2 Fiber?
G.657A2 fiber is a category of bend-insensitive single-mode optical fiber defined by the ITU-T G.657 standard, Category A2. It is engineered to withstand bending radii as tight as 7.5 mm — significantly tighter than the 30 mm threshold of standard G.652D fiber — while sustaining attenuation within strict ITU-T limits. The fiber maintains full mode-field compatibility with G.652D, making it the preferred choice for last-mile access networks, in-building cabling, and dense urban FTTH deployments where routing paths are inherently constrained.
G.657A2 Fiber Technical Specifications
The following table details the core optical and mechanical parameters of our G.657A2 fiber, verified against ITU-T G.657 (2016) and IEC 60793-2-50 standards. Each production reel is 100% tested on calibrated OTDR and interferometric equipment before shipment.
| Parameter | Specification | Standard Reference |
|---|---|---|
| Fiber Category | G.657A2 (Bend-Insensitive SMF) | ITU-T G.657 |
| Mode Field Diameter (1310 nm) | 8.6 – 9.2 µm ± 0.4 µm | ITU-T G.657A2 |
| Cladding Diameter | 125.0 ± 0.7 µm | IEC 60793-2-50 |
| Coating Diameter | 242 ± 5 µm | IEC 60793-2-50 |
| Attenuation @ 1310 nm | ≤ 0.35 dB/km | ITU-T G.657A2 |
| Attenuation @ 1550 nm | ≤ 0.20 dB/km | ITU-T G.657A2 |
| Attenuation @ 1625 nm | ≤ 0.23 dB/km | ITU-T G.657A2 |
| Macrobend Loss (R = 7.5 mm, 1 turn, 1550 nm) | ≤ 0.5 dB | ITU-T G.657A2 |
| Macrobend Loss (R = 7.5 mm, 1 turn, 1625 nm) | ≤ 1.0 dB | ITU-T G.657A2 |
| Macrobend Loss (R = 10 mm, 1 turn, 1550 nm) | ≤ 0.1 dB | ITU-T G.657A2 |
| Zero Dispersion Wavelength (λ₀) | 1300 – 1324 nm | ITU-T G.657A2 |
| Chromatic Dispersion @ 1550 nm | ≤ 18 ps/(nm·km) | ITU-T G.657A2 |
| Polarization Mode Dispersion (PMD) | ≤ 0.2 ps/√km | ITU-T G.657A2 |
| Proof Test Level | ≥ 0.69 GPa (100 kpsi) | IEC 60793-1-30 |
| Operating Temperature Range | −60°C to +85°C | IEC 60793-2-50 |
| Backward Compatibility | Fully compatible with G.652D | ITU-T G.657A2 |
The superior macrobend performance of G.657A2 fiber stems from a depressed-trench refractive index profile engineered to confine the guided mode more tightly within the core. This design approach preserves full compatibility with splicing equipment, connectors, and transceivers calibrated for standard G.652D fiber, eliminating any need for specialized termination tools or additional link budget allowances. Installers working in high-density multi-dwelling units (MDUs), hospitality venues, and enterprise campuses find that G.657A2 fiber significantly reduces installation time and rework costs by tolerating the tight routing radii that are unavoidable in real-world cable pathways.
Get a Competitive Quote for G.657A2 Fiber
Partner with a trusted G.657A2 fiber manufacturer and benefit from mill-direct rates, rigorous third-party test certification, and dedicated technical support from order placement through post-delivery commissioning. Submit your project specifications today and receive a detailed quotation within 24 hours.
- 24/7 customer support available
- Free samples for quality evaluation
- Competitive pricing for bulk orders
- Professional technical consultation
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