The Corning SMF-28e Optical Fiber is an enhanced single-mode fiber supplied on a 40,000-meter (40 km) spool, engineered for high-performance metro and access network deployments. Compliant with ITU-T G.652.D and fully backward compatible with legacy single-mode infrastructure, this fiber delivers optimized network design flexibility and long-term performance reliability across the full spectrum from 1260 nm to 1625 nm. The enhanced performance in the water-peak region (1383 nm) enables increased wavelength transmission and overall network capacity.
Technical Specifications
Optical Characteristics
• Fiber Type: Single-Mode (E9/125, core 8.2 µm; cladding 125 µm ± 0.7 µm)
• Wavelength Range: 1260 nm to 1625 nm
• Attenuation (maximum): 1310 nm ≤ 0.34 dB/km; 1550 nm ≤ 0.20 dB/km; 1625 nm ≤ 0.25 dB/km
• Macrobend Loss: ≤ 0.03 dB across mandrel configurations (32 mm to 60 mm, 1–100 turns)
• Dispersion (1550 nm): ≤ 18.0 ps/(nm•km); (1625 nm): ≤ 22.0 ps/(nm•km)
• Zero Dispersion Wavelength: 1304 nm to 1324 nm
• Zero Dispersion Slope: ≤ 0.092 ps/(nm²•km)
• Polarization Mode Dispersion (PMD Link Design): ≤ 0.06 ps/√km (standard); ≤ 0.04 ps/√km (G.657.A1 option)
• Mode-Field Diameter (1310 nm): 9.2 ± 0.4 µm; (1550 nm): 9.8 ± 0.5 µm
• Numerical Aperture: 0.14 NA (1310 nm)
• Cable Cutoff Wavelength: ≤ 1260 nm
Physical Characteristics
• Coating Diameter: 245 ± 5 µm or 250 µm
• Coating-Cladding Concentricity: ≤ 10 µm
• Fiber Curl: ≥ 4.0 m radius of curvature
– Key Features
• Full-spectrum operation (1260–1625 nm) with suppressed water-peak attenuation
• Compliant with ITU-T G.652 Categories A, B, C, D and IEC 60793-2-50 Type B1.3
• Backward compatible with existing single-mode fiber plant
• Low macrobend loss enabling compact installations
• Available G.657.A1 compliant options for enhanced PMD performance
– Typical Applications
• Metro and access network deployments
• Long-haul transmission systems
• Multi-wavelength transmission (DWDM, CWDM)
– Compatibility & Integration
Fully backward compatible with legacy ITU-T G.652 infrastructure. Meets Telcordia GR-20 and TIA/EIA 492-CAAB requirements. Alternative attenuation profiles available upon request.
