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| Property | Parameter | Description |
|---|---|---|
| Product Name | G.654E Ultra-Low-Loss Cut-off Wavelength Shifted Single-Mode Optical Fiber | Designed for long-haul and submarine transmission with ultra-low attenuation |
| Fiber Category | ITU-T G.654E / IEC 60793-2-55 Type B1.3 | Cut-off wavelength shifted single-mode fiber optimized for C+L band operation |
| Standard Compliance | ITU-T G.654E, IEC 60793-2-55, TIA-492CAAB | Compliant with international telecom and fiber optic standards |
| Core Material | Pure Silica Core (SiO₂) | Ultra-pure silica core minimizes Rayleigh scattering and OH absorption losses |
| Cladding Diameter | 125.0 ± 0.7 µm | Standard cladding diameter ensuring compatibility with standard connectors and splicers |
| Core Diameter | 9.0 – 13.0 µm (MFD @ 1550 nm: 11.5 – 13.0 µm) | Enlarged mode field diameter reduces nonlinear effects in high-power transmission |
| Attenuation Coefficient | ≤ 0.160 dB/km @ 1550 nm; ≤ 0.170 dB/km @ 1625 nm | Ultra-low loss enabling extended repeater spacing in submarine and terrestrial links |
| Cable Cut-off Wavelength | ≤ 1530 nm | Ensures single-mode operation across the full C and L transmission bands |
| Chromatic Dispersion | 17 – 23 ps/(nm·km) @ 1550 nm; ≤ 22 ps/(nm·km) @ 1625 nm | Positive dispersion suitable for dispersion-managed transmission systems |
| Polarization Mode Dispersion (PMD) | ≤ 0.06 ps/√km (link design value) | Low PMD supports high-speed coherent transmission at 100G/400G and beyond |
| Coating Diameter | 235 – 265 µm (standard); 200 µm (reduced coating available) | Dual-layer UV-cured acrylate coating providing mechanical protection and flexibility |
| Proof Test Level | ≥ 0.69 GPa (100 kpsi) | Ensures mechanical reliability and screening of latent defects during manufacturing |
| Operating Temperature | -60°C to +85°C | Suitable for deployment in extreme environmental conditions including submarine cables |
| Application | Long-haul terrestrial, submarine, DWDM, coherent 100G/400G/800G transmission | Ideal for ultra-long-distance backbone networks and high-capacity optical systems |
| Certification | RoHS, REACH, ISO 9001:2015, Telcordia GR-20 | Certified for global deployment and environmental compliance |
| Packaging | Wooden reel; standard lengths 4.0 km, 6.25 km, 8.0 km per reel; custom lengths available | Reels labeled with fiber length, attenuation, and batch traceability information |
| MOQ | 50 km (negotiable for project orders) | Flexible order quantities available for system integrators and network operators |
Initial reel labeling issue — resolved promptly, fiber quality is fine
Ordered 600 km of G.654E fiber for a coherent transmission pilot. Fiber performance itself was good — attenuation at 1550 nm measured 0.158–0.162 dB/km, PMD coefficient below 0.04 ps/√km, cable cut-off wavelength confirmed ≤1530 nm per ITU-T G.654E. However, approximately 8% of reels arrived with incorrect reel length markings on the drum labels, which caused confusion during our inventory intake. I raised the issue immediately and the supplier's quality team investigated, issued corrected documentation within 48 hours, and offered a partial credit on the affected reels. The response was professional and the problem has reportedly been corrected in their labeling process. Fiber quality itself meets spec — the issue was administrative, not technical.
Ordered 600 km of G.654E fiber for a coherent transmission pilot. Fiber performance itself was good — attenuation at 1550 nm measured 0.158–0.162 dB/km, PMD coefficient below 0.04 ps/√km, cable cut-off wavelength confirmed ≤1530 nm per ITU-T G.654E. However, approximately 8% of reels arrived with incorrect reel length markings on the drum labels, which caused confusion during our inventory intake. I raised the issue immediately and the supplier's quality team investigated, issued corrected documentation within 48 hours, and offered a partial credit on the affected reels. The response was professional and the problem has reportedly been corrected in their labeling process. Fiber quality itself meets spec — the issue was administrative, not technical.
