What Is The Difference Between G.654E and G.654C Fiber?

As a leading fiber optic manufacturer with 21 years of experience, GL FIBER specializes in producing high-performance G.654 fiber, including G.654.E and G.654.C, for long-haul and high-speed networks. Below, we explain the technical differences between these two fiber types to help you choose the best solution for your needs.

1. Attenuation Performance

G.654.E Fiber: Features ultra-low attenuation (typically ≤ 0.168 dB/km at 1550 nm), making it ideal for 400G/800G coherent transmission and submarine cables.

G.654.C Fiber: Also offers low attenuation but with slightly higher loss compared to G.654.E, optimized for terrestrial long-haul networks.

2. Effective Area & Dispersion

G.654.E Fiber: Has a larger effective area (≥ 110 µm² at 1550 nm), reducing nonlinear effects and improving signal integrity in high-power DWDM systems.

G.654.C Fiber: Uses a moderate effective area (around 100-110 µm²), balancing performance and cost for standard long-distance applications.

3. Bend Resistance & Mechanical Reliability

Both fibers are designed for durability, but G.654.E is often preferred in submarine and ultra-long-haul deployments due to its superior performance under extreme conditions.

G.654.C is widely used in terrestrial backbone networks, where flexibility and cost-efficiency are key considerations.

Why Choose GL FIBER for G.654 Fiber?

21 Years of Expertise: Trusted by global telecom operators and data centers.
Custom Solutions: We support customized fiber cores (G652.D, G657.A1/A2/B3, G654, etc.) and cables (indoor/outdoor, armored, etc.).
ISO-Certified Quality: Our products meet ITU-T/IEC standards and are exported to 200+ countries.

Free Samples Available: Test our G.654.E fiber and other products before bulk orders!

For high-speed, low-loss optical transmission, G.654.E fiber is the optimal choice, while G.654.C remains a cost-effective alternative for standard long-haul networks. Contact GL FIBER today for a customized solution!