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G.657A1 Bend-Insensitive Fiber - Premium Manufacturer
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.657A1 Bend-Insensitive Single-Mode Optical Fiber for Access Networks
| Property | Parameter | Description |
|---|---|---|
| Product Name | G.657A1 Bend-Insensitive Single-Mode Optical Fiber | Designed for access networks with enhanced bend performance |
| Fiber Grade / Type | G.657A1 (equivalent to G.652D compatible) | Category A1 bend-insensitive SMF; fully backward compatible with G.652D |
| Standard Compliance | ITU-T G.657A1, IEC 60793-2-50 (B6a1), TIA-492AAAE | Meets international telecom and fiber optic standards |
| Core / Cladding Diameter | Core: 8.6–9.5 µm / Cladding: 125.0 ± 0.7 µm | Standard SMF geometry ensuring splice compatibility |
| Coating Diameter | 245 ± 10 µm (dual-layer acrylate) | Dual 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 (Min. Bend Radius) | ≤ 0.1 dB/turn @ R=10 mm (1550 nm); ≤ 0.5 dB/turn @ R=10 mm (1625 nm) | Superior bend tolerance for FTTH/FTTx tight-routing installations |
| Chromatic Dispersion | Zero Dispersion Wavelength: 1300–1324 nm; ≤ 18 ps/(nm·km) @ 1550 nm | Compliant with G.657A1 dispersion specifications |
| Polarization Mode Dispersion (PMD) | ≤ 0.1 ps/√km (link design value) | Suitable for high-speed transmission up to 10 Gbps and beyond |
| Numerical Aperture | 0.20 ± 0.02 | Standard NA for efficient coupling with connectors and splices |
| Proof Test Level | ≥ 0.69 GPa (100 kpsi) | Ensures mechanical reliability during installation and service life |
| Operating Temperature | -60°C to +85°C | Suitable for outdoor, indoor, and harsh environment deployments |
| Application | FTTH, FTTx, MDU wiring, indoor/outdoor access networks, patch cords | Optimized for last-mile fiber deployment with tight bends |
| Certification | ITU-T G.657A1, IEC 60793-2-50, RoHS compliant, CE | Internationally certified for telecom-grade deployment |
| Packaging | Wooden reel or plastic bobbin; standard lengths: 2.0 km, 4.0 km, 6.25 km per reel | Custom reel lengths available upon request |
| MOQ | 50 km (negotiable for large projects) | OEM/ODM orders and custom specifications accepted |
G.657A1 Bend-Insensitive Fiber - Premium Manufacturer
G.657A1 Bend-Insensitive Single-Mode Optical Fiber for Access Networks represents a breakthrough solution engineered to meet the demanding requirements of modern fiber-to-the-home (FTTH) and fiber-to-the-building (FTTB) deployments. As broadband infrastructure continues to expand globally, network installers face the persistent challenge of routing cables through tight bends, sharp corners, and confined spaces without compromising signal integrity. The G.657A1 fiber addresses this challenge head-on, delivering a minimum bending radius of 10 mm at 1550 nm with macrobend loss not exceeding 0.1 dB per turn — a significant improvement over conventional G.652D single-mode fiber. Fully backward-compatible with ITU-T G.652D standards, this fiber integrates seamlessly into existing network infrastructure, making it the preferred choice for last-mile connectivity projects, indoor wiring, and high-density urban deployments where space constraints are a constant operational reality.
What is G.657A1 Bend-Insensitive Single-Mode Optical Fiber for Access Networks?
G.657A1 Bend-Insensitive Single-Mode Optical Fiber for Access Networks is a specialized optical transmission medium defined by ITU-T Recommendation G.657 Category A1. It is engineered with a trench-assisted or depressed-cladding index profile to dramatically reduce signal loss when the fiber is bent or routed around corners, making it ideally suited for access network environments including FTTH, FTTB, and indoor structured cabling systems requiring tight-radius installations.
G.657A1 Bend-Insensitive Single-Mode Optical Fiber Manufacturing Process
The manufacturing of G.657A1 Bend-Insensitive Single-Mode Optical Fiber for Access Networks begins with the Modified Chemical Vapor Deposition (MCVD) or Outside Vapor Deposition (OVD) process to create a precisely engineered preform with a trench-assisted refractive index profile. The preform is drawn at temperatures exceeding 2,000°C in a controlled-atmosphere drawing tower, followed by dual-layer UV-cured acrylate coating application achieving a final outer diameter of 245 ± 10 µm, ensuring consistent mechanical and optical performance across every meter produced.
G.657A1 Bend-Insensitive Single-Mode Optical Fiber Technical Specifications
G.657A1 Bend-Insensitive Single-Mode Optical Fiber for Access Networks conforms strictly to ITU-T G.657A1 and IEC 60793-2-50 standards. Key parameters include: mode field diameter of 8.6–9.5 µm at 1310 nm, cladding diameter of 125.0 ± 0.7 µm, attenuation ≤ 0.35 dB/km at 1310 nm and ≤ 0.20 dB/km at 1550 nm, macrobend loss ≤ 0.1 dB/turn at a 10 mm bend radius (1550 nm), chromatic dispersion ≤ 18 ps/(nm·km) at 1550 nm, and proof test level of 0.69 GPa (100 kpsi) minimum, ensuring long-term mechanical reliability in field installations.
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