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G.657A2 Bend-Insensitive Fiber - Access Network Supplier
China
Supplier's customization ability
- Drawing-based customization
- Sample-based customization
- Full customization
Minimum order quantity: 1 kilometers
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 Bend-Insensitive Single-Mode Optical Fiber for Access Networks
| Property | Parameter | Description |
|---|---|---|
| Product Name | G.657A2 Bend-Insensitive Single-Mode Optical Fiber | Designed for access networks requiring tight bend radius installations |
| Fiber Category | ITU-T G.657A2 / IEC 60793-2-50 Type B6a2 | Fully compatible with G.652D single-mode fiber; international equivalent to Corning SMF-28 Ultra, OFS BendBright-XS |
| Standard Compliance | ITU-T G.657A2, IEC 60793-2-50, TIA-492AAAD | Meets international telecom and fiber optic standards for bend-insensitive SMF |
| Core Diameter | 8.6–9.5 µm (nominal 9.0 µm) | Compatible with standard G.652D splicing and connectorization |
| Cladding Diameter | 125.0 ± 0.7 µm | Standard 125 µm cladding for universal compatibility |
| Coating Diameter | 245 ± 5 µm (standard); 200 ± 5 µm (reduced) | Dual-layer UV-cured acrylate coating for mechanical protection |
| Attenuation | ≤ 0.20 dB/km @ 1550 nm; ≤ 0.40 dB/km @ 1310 nm | Low attenuation for long-distance signal transmission in FTTH/FTTB deployments |
| Macrobend Loss (Key Parameter) | ≤ 0.1 dB/turn @ 15 mm radius, 1550 nm; ≤ 0.5 dB/turn @ 10 mm radius, 1550 nm | Per ITU-T G.657A2; superior bend performance for conduit and tight-space routing |
| Chromatic Dispersion | ≤ 18 ps/(nm·km) @ 1550 nm; Zero Dispersion Wavelength: 1300–1324 nm | Compliant with G.657A2 dispersion specifications |
| Polarization Mode Dispersion (PMD) | ≤ 0.2 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 G.652D-compatible components |
| Proof Test Level | ≥ 100 kpsi (0.69 GPa) | Ensures mechanical reliability during installation and long-term deployment |
| Operating Temperature | -60°C to +85°C | Suitable for outdoor, indoor, and harsh environment access network applications |
| Application | FTTH, FTTB, FTTC, MDU wiring, indoor/outdoor drop cables, patch cords | Ideal for last-mile access networks, building wiring, and tight-bend installations |
| Certification | RoHS, REACH, UL (optional), CE, ISO 9001 | Compliant with environmental and quality management system requirements |
| Packaging | Wooden reel or plastic bobbin; standard lengths: 2.0 km, 4.0 km, 6.25 km per reel | Custom reel lengths and packaging available upon request |
| MOQ | 500 km per order | Flexible MOQ negotiable for project-based procurement |
G.657A2 Bend-Insensitive Fiber - Access Network Supplier
G.657A2 Bend-Insensitive Single-Mode Optical Fiber for Access Networks represents a breakthrough solution engineered specifically for last-mile and FTTH (Fiber-to-the-Home) deployments where tight routing conditions are unavoidable. Compliant with ITU-T G.657A2 standards, this fiber delivers exceptional macro-bend performance with a minimum bend radius of just 7.5 mm, making it ideal for installation in conduits, cable ducts, and indoor wiring environments where conventional G.652D fiber would suffer unacceptable signal loss. With an attenuation coefficient of ≤0.20 dB/km at 1550 nm and ≤0.40 dB/km at 1310 nm, the G.657A2 fiber maintains full backward compatibility with standard single-mode fiber infrastructure while dramatically reducing installation complexity. Telecommunications contractors, network operators, and FTTH project developers increasingly rely on this fiber type to accelerate deployment timelines, minimize signal degradation in confined spaces, and achieve long-term network reliability across residential and commercial access networks worldwide.
What is G.657A2 Bend-Insensitive Single-Mode Optical Fiber for Access Networks?
G.657A2 Bend-Insensitive Single-Mode Optical Fiber for Access Networks is an ITU-T standardized optical fiber designed to tolerate tight bends without significant signal loss. It features a specialized trench-assisted refractive index profile that suppresses light leakage at bend radii as small as 7.5 mm, enabling reliable data transmission in physically constrained FTTH, FTTB, and indoor distribution environments where standard fibers cannot perform adequately.
G.657A2 Bend-Insensitive Single-Mode Optical Fiber Manufacturing Process
The manufacturing of G.657A2 Bend-Insensitive Single-Mode Optical Fiber begins with Modified Chemical Vapor Deposition (MCVD) or Outside Vapor Deposition (OVD) to form a precisely engineered preform with a trench-assisted refractive index profile. The preform is then drawn at temperatures exceeding 2,000°C in a precision draw tower, followed by dual-layer UV-cured acrylate coating application to achieve a nominal outer diameter of 245 µm, ensuring mechanical durability and long-term environmental resistance.
G.657A2 Bend-Insensitive Single-Mode Optical Fiber Technical Specifications
Key technical parameters of the G.657A2 fiber include: attenuation ≤0.20 dB/km at 1550 nm and ≤0.40 dB/km at 1310 nm; mode field diameter of 9.2 ± 0.4 µm at 1310 nm; chromatic dispersion ≤18 ps/(nm·km) at 1550 nm; macrobend loss ≤0.1 dB/turn at a 7.5 mm bend radius at 1550 nm; cable cutoff wavelength ≤1260 nm; and coating diameter of 245 ± 5 µm. The fiber fully complies with ITU-T G.657A2 and IEC 60793-2-50 standards, ensuring seamless interoperability with G.652D-based networks.
Get a Competitive Quote for G.657A2 Bend-Insensitive Fiber
As a trusted access network supplier, we offer mill-direct rates on G.657A2 Bend-Insensitive Single-Mode Optical Fiber with fast lead times and flexible order quantities. Whether you require sample reels for quality evaluation or large-volume supply for FTTH rollouts, our technical team is ready to support your project requirements from specification to delivery.
- 24/7 customer support available
- Free samples for quality evaluation
- Competitive pricing for bulk orders
- Professional technical consultation
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