Corning SMF-28 Optical Bare Fiber is a single-mode optical fiber engineered for long-haul signal transmission with minimal loss. Supplied as a continuous 10,000 meter (10 km) length, this fiber meets ITU-T G.652.D and G.657.A1 standards and delivers performance across C-band and L-band wavelengths. The combination of ultra-low attenuation, controlled dispersion, and excellent bend performance makes it the preferred choice for telecommunications backbone networks, submarine cable systems, and high-capacity metro links.
Technical Specifications
Optical Performance
• Attenuation at 1310 nm: ≤0.32 dB/km
• Attenuation at 1550 nm: ≤0.18 dB/km
• Attenuation at 1625 nm: ≤0.20 dB/km
• Zero Dispersion Wavelength (λ₀): 1304–1324 nm
• Zero Dispersion Slope (S₀): ≤0.092 ps/(nm²•km)
• Chromatic Dispersion at 1550 nm: ≤18.0 ps/(nm•km)
• Chromatic Dispersion at 1625 nm: ≤22.0 ps/(nm•km)
• Polarization Mode Dispersion (PMD) Link Design Value: ≤0.04 ps/√km
• Maximum Individual Fiber PMD: ≤0.1 ps/√km
• Mode Field Diameter at 1310 nm: 9.2 ± 0.4 µm
• Mode Field Diameter at 1550 nm: 10.4 ± 0.5 µm
• Numerical Aperture: 0.14 (at 1310 nm)
• Cable Cutoff Wavelength (λcc): ≤1260 nm
Physical Dimensions
• Cladding Diameter: 125 ± 0.7 µm
• Core Diameter: 8.2–8.3 µm
• Dual Acrylate Coating: 242–245 µm
• Core-Clad Concentricity: ≤0.5 µm
• Cladding Non-Circularity: ≤0.7%
• Minimum Fiber Curl Radius: ≥4.0 m
Mechanical & Environmental
• Proof Test: ≥100 kpsi (0.69 GPa)
• Operating Temperature: -60°C to +85°C
• Macrobend Loss (10 mm, 100 turns @ 1625 nm): ≤0.01 dB
• Point Discontinuity: ≤0.10 dB at 1310 nm and 1550 nm
– Key Features
• Optimized for 1310 nm and 1550 nm transmission windows
• Post-hydrogen aging performance maintained (1383 nm attenuation: ≤0.32 dB/km)
• Flat attenuation profile across C-band and L-band
• Low macrobend loss for tight radius installations
• High proof test strength ensures mechanical reliability
– Typical Applications
• Long-haul terrestrial and submarine optical systems
• Metropolitan and core network backbone infrastructure
• DWDM systems spanning C-band to L-band wavelengths
• High-reliability applications requiring low PMD
– Compatibility & Integration
Compliance with ITU-T G.652.D and G.657.A1 standards ensures full compatibility with standard single-mode transceivers, DWDM terminals, amplifier chains, and optical test equipment across the installed fiber optic base.
