Bare fiber G.657.A2 FPV UAV

G.657.A2 Single-Mode Optical Fiber

High-Performance Bend-Insensitive Optical Fiber for Modern Telecommunications Networks

Product Overview

Our G.657.A2 Single-Mode Optical Fiber is a premium-grade bend-insensitive optical fiber engineered to meet the demanding requirements of next-generation telecommunications, FTTH (Fiber-To-The-Home), backbone infrastructure, data centers, metropolitan networks, and high-density access networks.

Designed to combine excellent transmission performance, superior bending resistance, and long-term environmental reliability, this fiber enables operators, network integrators, and cable manufacturers to deploy robust optical infrastructures while minimizing installation constraints and maintenance costs.

The fiber complies with the most stringent industry standards and offers outstanding optical characteristics across the key transmission windows of 1310 nm, 1550 nm, and 1625 nm, making it ideal for both current and future network deployments.

Key Advantages

Exceptional Low Attenuation

The fiber delivers extremely low signal loss, ensuring maximum transmission efficiency over long distances:

WavelengthAttenuation

1310 nm

≤ 0.34 dB/km

1383 nm (After H₂ Aging)

≤ 0.32 dB/km

1550 nm

≤ 0.20 dB/km

1625 nm

≤ 0.22 dB/km

These values contribute to enhanced network reach, reduced amplification requirements, and lower overall operating costs.

Superior Bend Performance

Thanks to its advanced bend-insensitive design, the G.657.A2 fiber maintains excellent optical performance even in highly constrained installation environments.

Macro-bending attenuation:

Test Condition1550 nm1625 nm

10 Turns Ø30 mm

≤ 0.03 dB

≤ 0.10 dB

1 Turn Ø20 mm

≤ 0.10 dB

≤ 0.20 dB

1 Turn Ø15 mm

≤ 0.50 dB

≤ 1.00 dB

This exceptional flexibility makes it particularly suitable for:

• FTTH deployments
• Indoor cabling
• Building risers
• Data centers
• High-density patching environments
• Underground and urban network installations

Optimized Transmission Characteristics

The fiber is designed to ensure stable and efficient signal propagation throughout the network.

Optical Specifications

ParameterValue

Zero Dispersion Wavelength

1300 – 1324 nm

Zero Dispersion Slope

≤ 0.092 ps/(nm²·km)

PMD

≤ 0.10 ps/√km

Link Design Value (M=20, Q=0.01%)

≤ 0.06 ps/√km

Cable Cutoff Wavelength (λcc)

≤ 1260 nm

Mode Field Diameter @1310 nm

8.6 ± 0.4 μm

These characteristics support high-speed transmission systems while maintaining excellent signal integrity.

Precision Manufacturing

The fiber is manufactured under strict quality control standards to ensure exceptional geometric consistency:

ParameterValue

Cladding Diameter

125.0 ± 0.7 μm

Cladding Non-Circularity

≤ 0.7 %

Coating Diameter

245 ± 10 μm

Coating-Cladding Concentricity Error

≤ 12.0 μm

Core-Cladding Concentricity Error

≤ 0.5 μm

Curl Radius

≥ 4.0 m

This precision guarantees superior splice performance and reduced installation losses.

Environmental Reliability

The fiber is designed to maintain stable performance under extreme environmental conditions.

Test ConditionPerformance Variation

Temperature Cycling (-60°C to +85°C)

≤ 0.05 dB/km

Water Soaking (23°C / 30 Days)

≤ 0.05 dB/km

Damp Heat (85°C / 85% RH / 30 Days)

≤ 0.05 dB/km

Dry Heat (85°C / 30 Days)

≤ 0.05 dB/km

These results demonstrate excellent long-term durability and operational stability in harsh environments.

High Mechanical Strength

The fiber is engineered for reliable installation and long service life.

ParameterValue

Proof Test

≥ 9.0 N

Coating Strip Force (Typical Average)

1.0 – 5.0 N

Coating Strip Force (Peak)

1.3 – 8.9 N

Dynamic Stress Corrosion Susceptibility Parameter (Nd)

≥ 20

These properties ensure strong resistance to handling, installation stress, and long-term mechanical fatigue.

Refractive Index Characteristics

WavelengthEffective Group Index (Neff)

1310 nm

1.4682

1550 nm

1.4688

Delivery Configuration

Available reel lengths:

50.4 km per reel

Customized packaging and large-volume production programs are available upon request.

Applications

The G.657.A2 Single-Mode Optical Fiber is ideally suited for:

• Fiber-To-The-Home (FTTH)
• Fiber-To-The-Building (FTTB)
• Metropolitan Area Networks (MAN)
• Long-Haul Telecommunications
• Backbone Infrastructure
• Data Centers
• 5G Transport Networks
• Smart Cities
• Industrial Communication Systems
• Government and Critical Infrastructure Networks

Why Choose Our G.657.A2 Fiber?

✔ Ultra-low attenuation performance

✔ Excellent bend resistance

✔ Outstanding environmental reliability

✔ Precision geometry for low splice loss

✔ Optimized for FTTH and high-density deployments

✔ Long service life and network stability

✔ Suitable for large-scale international projects

✔ Available for high-volume supply programs

Commercial Positioning

The G.657.A2 Single-Mode Optical Fiber represents a high-performance solution for network operators, cable manufacturers, EPC contractors, telecom integrators, government infrastructure projects, and wholesale distributors seeking reliable, future-proof optical transmission media capable of supporting the increasing bandwidth demands of modern telecommunications networks.