Description
The Core of Connectivity: Carrier-Grade Bare Fiber
At AIMIFIBER, we build from the photon up. Our Single-Mode Bare Optical Fiber is drawn and coated for consistent geometry and low loss, ensuring splice compatibility and stable network performance in production and R&D environments.
Product Options
- G.652D (Standard SMF): Low-water-peak performance for full spectrum operation (1260–1625 nm). Interoperable with mainstream G.652D fibers used in metro/access networks.
- G.657A2 (Bend-Insensitive): Engineered for tight bends (down to 7.5 mm radius) with minimal macrobend loss. Ideal for FTTH drop, indoor routing, and invisible fibers.
Key Features
- Superior geometry: 125.0 ± 0.7 µm cladding; ≤0.5 µm core–clad concentricity for reliable fusion splicing.
- Dual-layer UV acrylate coating (~245 µm): Excellent micro-bend resistance and environmental protection.
- Low attenuation: ≤0.34 dB/km @1310 nm; ≤0.20 dB/km @1550 nm (typ.).
- Standard spooling: 25.2 km / 50.4 km with traceable labels & factory test report.
- OEM options: IEC 60304 color inks, custom proof test, private label, RoHS/REACH documentation.

Technical Specifications
| Parameter | Specification (G.652D / G.657A2) |
|---|---|
| Cladding Diameter | 125.0 ± 0.7 µm |
| Coating Diameter | ≈245 ± 5 µm (Natural / optional color inks) |
| Core–Clad Concentricity | ≤ 0.5 µm |
| Cladding Non-Circularity | ≤ 0.7 % |
| Attenuation (typ.) | 1310 nm: ≤ 0.34 dB/km; 1550 nm: ≤ 0.20 dB/km |
| Proof Test Level | ≥ 100 kpsi (0.69 GPa); higher on request |
| Bend Performance | G.657A2 meets 7.5 mm min. bend radius requirements |
| Operating / Storage Temp. | −60 °C to +85 °C / −40 °C to +85 °C |
| Spool Length | 25.2 km / 50.4 km (customizable) |
| Standards | ITU-T G.652.D, ITU-T G.657.A2; IEC 60793-2-50 |
Applications
- Optical cable manufacturing (FTTH drop, indoor/outdoor cables)
- Fiber sensing & FBG projects
- Pigtail/patch cord production lines
- Lab qualification, OTDR/attenuation test rigs
Compliance & QA
- 100% geometry and attenuation testing; proof-test verified
- RoHS / REACH compliant materials
- Lot traceability and factory test report included
Packaging & Labeling
- Standard shipping spools (25.2 km / 50.4 km), vacuum-bag protected with desiccant
- External label: fiber type, length, lot ID, proof level, date code, QR trace
Ordering Information
Code format: BF-[G652D|G657A2]-[25.2|50.4]KM-[100K|CUSTOM]-[NAT|COLOR]-[LOT]
Example: BF-G657A2-25.2KM-100K-NAT-24AIMI1234
FAQs
- What are standard put-ups?
25.2 km and 50.4 km per spool; other lengths on request. - Can you supply colored fiber?
Yes—IEC 60304 12-color inks or custom colors. - What proof levels are available?
≥100 kpsi standard; higher levels available for special builds. - Is it compatible with mainstream G.652D fibers?
Yes—drawn to meet G.652.D/IEC 60793-2-50 parameters for splice interoperability. - Lead time?
Stock for common SKUs; custom builds typically 2–4 weeks.




