Corning Single Mode fiber SMF-28e Optical Fiber 25,000m / 25km

The Corning SMF-28e Optical Fiber is a single-mode fiber supplied on a 25,000 m spool for long-haul telecommunications and metro network deployments. This ITU-T G.652.D compliant fiber delivers low attenuation across C and L bands with attenuation of ≤ 0.32 dB/km at 1310 nm and ≤ 0.18 dB/km at 1550 nm. Designed for full-spectrum operation from 1260 nm to 1625 nm, it maintains controlled dispersion characteristics and supports high-speed digital and analog transmission over extended distances.

– Technical Specifications

Optical Performance
• Attenuation: ≤ 0.32 dB/km at 1310 nm; ≤ 0.18 dB/km at 1550 nm
• Dispersion: ≤ 18.0 ps/(nm•km) at 1550 nm; ≤ 22.0 ps/(nm•km) at 1625 nm
• Zero Dispersion Wavelength: 1304–1324 nm
• Zero Dispersion Slope: ≤ 0.092 ps/(nm²•km)
• Polarization Mode Dispersion (Link Design Value): ≤ 0.06 ps/√km
• Cable Cutoff Wavelength: ≤ 1260 nm
• Mode-Field Diameter: 9.2 ± 0.4 µm at 1310 nm; 9.8 ± 0.5 µm at 1550 nm
• Numerical Aperture: 0.14
• Core Diameter: 8.2 µm

Mechanical and Environmental
• Proof Test: ≥ 100 kpsi (0.69 GPa) applied to entire fiber length
• Operating Temperature Range: −60°C to +85°C
• Macrobend Loss: ≤ 0.03 dB at 1550 nm (50 mm diameter, 100 turns); ≤ 0.03 dB at 1625 nm (60 mm diameter, 100 turns)
• Point Discontinuity: ≤ 0.05 dB at 1310 nm and 1550 nm
• Induced Attenuation from Temperature Dependence: ≤ 0.05 dB/km (−60°C to +85°C)
• Induced Attenuation from Temperature Humidity Cycling: ≤ 0.05 dB/km
• Water Immersion Induced Attenuation: ≤ 0.05 dB/km
• Heat Aging and Damp Heat Induced Attenuation: ≤ 0.05 dB/km each

Dimensional
• Cladding Diameter: 125.0 ± 0.7 µm
• Coating Diameter: 245 ± 5 µm
• Fiber Curl: ≥ 4.0 m radius of curvature
• Core-Clad Concentricity: ≤ 0.5 µm
• Cladding Non-Circularity: ≤ 0.7%

– Key Features

• Full-spectrum operation from 1260–1625 nm with optimized performance at 1383 nm water peak
• Compliant with ITU-T G.652.D, IEC 60793-2-50 Type B1.3, TIA/EIA 492-CAAB, and Telcordia GR-20
• Low macrobend loss supports tight bend radius applications
• Environmental stability across extended temperature and humidity ranges
• 25 km spool format enables efficient field deployment

– Typical Applications

• Long-distance terrestrial and submarine cable systems
• Metro and access network installations
• High-capacity wavelength division multiplexing (WDM) systems
• Legacy and optical transport networks

– Compatibility & Integration

SMF-28e integrates with standard telecommunications infrastructure designed for ITU-T G.652.D single-mode fiber. Connector and splice compatibility follows industry-standard practices. Alternative attenuation profiles and proof test levels are available upon request.