English 
Español 
Français 
Deutsch 
Português (Brasil) 
Русский 
العربية 
G.657.A2 Bend-Insensitive Fiber - Premium Supplier
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.657.A2 Bend-Insensitive Fiber
| Property | Parameter | Description |
|---|---|---|
| Product Name | G.657.A2 Bend-Insensitive Single-Mode Optical Fiber | Low bend loss single-mode fiber for access network applications |
| Fiber Type | Single-Mode Fiber (SMF) | Compatible with G.652.D standard; enhanced bend performance |
| Standard Compliance | ITU-T G.657.A2, IEC 60793-2-50 | Fully backward compatible with ITU-T G.652.D specifications |
| Mode Field Diameter | 9.2 ± 0.4 µm @ 1310 nm | Ensures compatibility with standard G.652 fiber splicing |
| Cladding Diameter | 125.0 ± 0.7 µm | Standard 125 µm glass cladding |
| Coating Diameter | 245 ± 10 µm | Dual-layer UV-cured acrylate coating |
| 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 | Per ITU-T G.657.A2; 10 turns at specified radius |
| Macrobend Loss (R=10 mm) | ≤ 0.1 dB/turn @ 1550 nm; ≤ 0.2 dB/turn @ 1625 nm | Per ITU-T G.657.A2; 10 turns at specified radius |
| Chromatic Dispersion | ≤ 18 ps/(nm·km) @ 1550 nm | Zero dispersion wavelength: 1300–1324 nm |
| Cutoff Wavelength | ≤ 1260 nm (cable cutoff) | Ensures single-mode operation across full transmission band |
| Tensile Strength (Proof Test) | ≥ 100 kpsi (0.69 GPa) | Standard proof test per IEC 60793-1-30 |
| Operating Temperature | -60°C to +85°C | Suitable for indoor, outdoor, and FTTH drop cable environments |
| Application | FTTH, FTTB, indoor wiring, tight-buffer cables, patch cords | Ideal for last-mile access networks and confined routing paths |
| Certification | RoHS, REACH, UL (optional), TIA-568.3-D | Compliant with international environmental and safety standards |
| Packaging | Wooden reel or plastic bobbin; 1 km, 2 km, 4 km, 5 km per reel | Custom reel lengths available upon request |
| MOQ | 10 km | OEM/ODM orders accepted; bulk pricing available |
G.657.A2 Bend-Insensitive Fiber - Premium Supplier
G.657.A2 Bend-Insensitive Fiber represents one of the most advanced single-mode optical fiber solutions available for modern fiber-to-the-home (FTTH) and fiber-to-the-premises (FTTP) deployments. Engineered to deliver exceptional signal integrity even under tight bending conditions, this fiber type conforms fully to ITU-T G.657.A2 standards, which mandate a minimum bend radius of just 7.5 mm — significantly tighter than conventional G.652.D fibers requiring 30 mm. As global broadband infrastructure continues to expand into residential buildings, multi-dwelling units, and complex indoor routing environments, the demand for a reliable bend-insensitive solution has never been greater. This fiber maintains full backward compatibility with G.652.D networks, enabling seamless integration into existing optical systems without costly overhauls. With attenuation values as low as 0.2 dB/km at 1550 nm and macrobend loss not exceeding 0.1 dB per turn at a 7.5 mm bend radius, it delivers premium-grade performance across diverse installation scenarios, from tight conduit pathways to sharp-corner routing in wall cavities and cable ducts.
What is G.657.A2 Bend-Insensitive Fiber?
G.657.A2 Bend-Insensitive Fiber is a single-mode optical fiber classified under the ITU-T G.657 Category A2 standard, specifically designed to tolerate extreme bending without significant signal loss. Unlike standard single-mode fibers, it employs a trench-assisted refractive index profile that confines light more effectively within the core, maintaining optical performance at bend radii as tight as 7.5 mm while remaining fully compatible with G.652.D legacy infrastructure.
G.657.A2 Bend-Insensitive Fiber Manufacturing Process
The production of G.657.A2 Bend-Insensitive Fiber begins with a modified chemical vapor deposition (MCVD) or outside vapor deposition (OVD) process to fabricate a precision preform featuring a trench-assisted index profile. The preform is drawn into fiber at temperatures exceeding 2,000°C in a controlled tower environment, achieving a nominal outer diameter of 125 ± 0.7 µm. A dual-layer UV-cured acrylate coating is then applied, bringing the final coated diameter to 245 ± 5 µm, ensuring mechanical durability and long-term environmental resistance.
G.657.A2 Bend-Insensitive Fiber Technical Specifications
This fiber delivers a mode field diameter of 9.2 ± 0.4 µm at 1310 nm and 10.4 ± 0.5 µm at 1550 nm. Attenuation is rated at ≤0.35 dB/km at 1310 nm and ≤0.20 dB/km at 1550 nm per ITU-T G.657.A2. Macrobend loss at a 7.5 mm bend radius (1 turn) measures ≤0.5 dB at 1550 nm and ≤1.0 dB at 1625 nm. The chromatic dispersion coefficient does not exceed 18 ps/(nm·km) at 1550 nm, and the fiber supports a proof test tensile strength of ≥0.69 GPa, ensuring reliable long-term deployment integrity across demanding installation environments.
Get a Competitive Quote for G.657.A2 Bend-Insensitive Fiber
Partner with a trusted premium supplier for G.657.A2 Bend-Insensitive Fiber and benefit from mill-direct rates, rigorous ITU-T-compliant quality assurance, and rapid global delivery. Whether you require small evaluation quantities or large-scale bulk orders, our team is ready to provide tailored solutions that meet your exact project specifications.
- 24/7 customer support available
- Free samples for quality evaluation
- Competitive pricing for bulk orders
- Professional technical consultation
Contact us today to get your free quote within 24 hours!
