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G657A 9/125 Bare Fiber | Bend Insensitive Single Mode Bare Optical Fiber
HUALUE G657A 9/125 bend insensitive single mode bare fiber is designed for FTTH, indoor cabling, and high-density optical routing applications. Low bending loss, stable attenuation, and compliant with ITU-T G.657.A standards.
| Parameter | Specification | Parameter | Specification |
| Fiber Type | Bend Insensitive Single Mode Bare Optical Fiber | Attenuation @1310nm | ≤ 0.35 dB/km |
| Fiber Standard | ITU-T G.657.A | Attenuation @1383nm | ≤ 0.32 dB/km |
| Core Diameter | 9 ± 0.4 μm | Attenuation @1550nm | ≤ 0.21 dB/km |
| Cladding Diameter | 125 ± 0.7 μm | Attenuation @1625nm | ≤ 0.23 dB/km |
| Coating Type | Bare Fiber (Uncolored / Primary Coated Optional) | Macrobending Loss @1550nm (10 turns, 15mm radius) | ≤ 0.25 dB |
| Mode Field Diameter @1310nm | 8.6–9.5 μm | PMD | ≤ 0.2 ps/√km |
| Mode Field Diameter @1550nm | 9.8–10.8 μm | Proof Test Level | ≥ 100 kpsi |
| Cutoff Wavelength (λcc) | ≤ 1260 nm | Operating Temperature | -60°C to +85°C |
| / | / | Storage Temperature | -60°C to +85°C |
- Parameters
| Parameter | Specification | Parameter | Specification |
| Fiber Type | Bend Insensitive Single Mode Bare Optical Fiber | Attenuation @1310nm | ≤ 0.35 dB/km |
| Fiber Standard | ITU-T G.657.A | Attenuation @1383nm | ≤ 0.32 dB/km |
| Core Diameter | 9 ± 0.4 μm | Attenuation @1550nm | ≤ 0.21 dB/km |
| Cladding Diameter | 125 ± 0.7 μm | Attenuation @1625nm | ≤ 0.23 dB/km |
| Coating Type | Bare Fiber (Uncolored / Primary Coated Optional) | Macrobending Loss @1550nm (10 turns, 15mm radius) | ≤ 0.25 dB |
| Mode Field Diameter @1310nm | 8.6–9.5 μm | PMD | ≤ 0.2 ps/√km |
| Mode Field Diameter @1550nm | 9.8–10.8 μm | Proof Test Level | ≥ 100 kpsi |
| Cutoff Wavelength (λcc) | ≤ 1260 nm | Operating Temperature | -60°C to +85°C |
| / | / | Storage Temperature | -60°C to +85°C |
G657A 9/125 Bare Fiber
HUALUE's bending loss insensitive single mode fiber (G.657 A fiber) is made by the advanced Complete Chemical Synthesis method, which could keep the content of OH- in a very low level in the perform .So the fiber has a outstanding attenuation coefficient, low water-peak and a good transmission performance. It can transmit in O-E-S-C-L for the whole band, and fully compatible with the G.652D network, under the premise of small bending diameter of wire arrangement places. At the same time, the high quality coating material make it a higher fatigue strength, which can prevent it from broken when the cable is in a small bending radius at long-terms .So it can completely meets the requirements of FTTH wire arrangement.
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Product Specifications
Item | Specification | Unit | ||
Attenuation | 1310nm | ≤0.350 | (dB/km) | |
1383nm | ≤0.330 | (dB/km) | ||
1550nm | ≤0.210 | (dB/km) | ||
1625nm | ≤0.240 | (dB/km) | ||
Attenuation difference vs wavelength | 1285nm～1330nm ref. 1310nm | ≤0.05 | (dB/km) (dB/km) | |
1525nm～1575nm ref. 1550nm | ≤0.05 | (dB/km) (dB/km) | ||
Point discontinuity | 1310nm | ≤0.015 | (dB) | |
1383nm | ≤0.03 | (dB) | ||
1550nm | ≤0.03 | (dB) | ||
1625nm | ≤0.03 | (dB) | ||
Dispersion | 1288nm～1339nm | ∣D∣≤3.4 | (ps/nm.km) | |
1271nm～1360nm | ∣D∣≤5.3 | (ps/nm.km) | ||
1480nm～1580nm | ≤20 | (ps/nm.km) | ||
1550nm | ≤17.5 | (ps/nm.km) | ||
Zero dispersion wavelength | 1300～1324 | (nm) | ||
Zero dispersion slope | ≤0.092 | (ps/nm2.km) | ||
PMD | PMD individual | ≤0.15 | (ps/√km) | |
PMD link design | ≤0.20 | (ps/√km) | ||
Cladding diameter | 125±0.7 | (μm) | ||
Cladding non-circularity | ≤1.0 | (%) | ||
Core/cladding concentricity error | ≤0.5 | (μm) | ||
Coating diameter | 242±7 | (μm) | ||
Coating/cladding concentricity error | ≤12.0 | (μm) | ||
Mode field diameter | 1310nm | 9.2±0.4 | (μm) | |
Cutoff wavelength | Uncabled | 1180～1330 | (nm) | |
Cabled | ≤1260 | (nm) | ||
Macrobend loss | Radius | 15 | 10 | (mm) |
Turns | 10 | 1 | (turn) | |
1550nm | ≤0.25 | ≤0.75 | (dB) | |
1625nm | ≤1.0 | ≤1.5 | (dB) | |
Proof test | ≥0.79Gpa | (Gpa) | ||
Fiber curl | ≥5 | (m) | ||
Dynamic fatigue | ≥20 | (nd) | ||
Temperature cycling (-60°C to + 85°C) | 1310nm &1550nm | ≤0.03 | (dB/km) | |
Water immersion (23°C ± 2°C) | ≤0.03 | (dB/km) | ||
Heat and humidity aging (85°C at 85%RH) | ≤0.03 | (dB/km) | ||
High temperature aging (85°C± 2°C) | ≤0.03 | (dB/km) | ||
•Low macrobending loss
- •Compatible with G652D fiber systems
- •Optimized for FTTH applications
- •Stable attenuation performance
- •Suitable for high-density cable routing
- •Excellent splice compatibility
- •Reliable long-term transmission stability
- •Supports compact cable structures
Product Applications
G657A 9/125 bare fiber is specifically designed for bend-sensitive optical installations and high-density fiber management systems.
FTTH & FTTx Access Networks Ideal for: •Indoor drop cables •Access networks •ONU connections •Fiber wall outlets •Distribution terminals
| Patch Cord & Pigtail Manufacturing Widely used for: •Patch cords •Pigtails •Jumpers •Connectorized assemblies
| Indoor Optical Cabling Suitable for: •Building backbone routing •Data rooms •Fiber wall boxes •Indoor cable assemblies
| Optical Passive Components Used in: •PLC splitters •Optical couplers •WDM modules •Compact passive optical devices
| High-Density Fiber Management Ideal for: •ODF systems •Fiber patch panels •Distribution frames •Compact optical enclosures
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Product Advantages
- •Bend insensitive single mode bare fiber
- •Fully compatible with G652D systems
- •Low bending loss in tight routing environments
- •Excellent for FTTH and indoor fiber management
- •Stable low attenuation across full spectrum
- •Ideal for patch cords, pigtails, and compact passive devices
- •Reliable and flexible for modern access networks
Product Standards
G657A 9/125 bare fiber is manufactured and tested according to international bend insensitive single mode optical fiber standards to ensure high reliability, low bending loss, and excellent compatibility with modern optical access networks.
- •ITU-T G.657.A1
- •IEC 60793
- •IEC 60794
- •RoHS
- •REACH
Why Choose Our G657A 9/125 Bare Fiber?
HUALUE is proud to offer premium bare optical fiber backed by advanced international technology. Through deep technical cooperation with FUTONG and the introduction of Sumitomo’s cutting-edge bare fiber manufacturing technology, HUALUE delivers bare fibers with excellent optical performance, high mechanical strength, and superior consistency.
Our state-of-the-art production line ensures a stable monthly output of 500000 to 600000 fiber cores. We maintain substantial ready stock of standard specifications (including G.652.D and G.657 series), enabling immediate delivery to meet urgent customer demands.
HUALUE focuses on optical communication solutions for global telecom and FTTH markets. Our products are supplied for telecom infrastructure, data center deployment, and fiber access projects.
We support:
- •Stable production capability
- •Strict quality inspection
- •Fast international delivery
- •OEM/ODM support
- •Customized cable solutions
- •Technical support for telecom projects
HUALUE is continuously expanding localized support capabilities for international customers and telecom operators.
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