The Corning LEAF® Optical Bare Fiber is a non-zero dispersion-shifted fiber (NZDSF) supplied in 5000-meter spools for high-performance optical networks. Engineered to ITU-T G.655.D standards, it delivers low dispersion and minimal loss across the C-band and L-band, supporting long-distance data transmission, telecommunications, and data center deployments. The fiber combines a 125 µm cladding diameter with 250 µm acrylate coating for robust mechanical and optical performance.
Technical Specifications
• Fiber Type: Non-Zero Dispersion-Shifted Fiber (NZDSF), ITU-T G.655.D compliant
• Core/Cladding: 125 µm cladding diameter
• Coating: 250 µm acrylate
• Spool Length: 5000 meters (5 km)
• Mode Field Diameter: 9.6 ± 0.4 µm at 1550 nm
• Numerical Aperture: 0.14 NA (measured at 1550 nm)
• Cable Cutoff Wavelength: ≤ 1360 nm
– Key Features
Attenuation Performance
• 1550 nm: ≤ 0.19 dB/km
• 1625 nm: ≤ 0.21 dB/km
• Attenuation uniformity across 1525–1575 nm: ≤ 0.02 dB/km maximum deviation from 1550 nm reference
• Attenuation uniformity across 1550–1625 nm: ≤ 0.03 dB/km maximum deviation from 1550 nm reference
Dispersion Characteristics
• 1530 nm: 2.0–5.5 ps/(nm•km)
• 1565 nm: 4.5–6.0 ps/(nm•km)
• 1625 nm: 5.8–11.2 ps/(nm•km)
Polarization Mode Dispersion
• PMD Link Design Value: ≤ 0.04 ps/√km (ITU-T G.650-2 Appendix IV compliant)
• Maximum Individual Fiber PMD: ≤ 0.1 ps/√km
Macrobend Loss
• 1625 nm (30 mm mandrel, 100 turns): ≤ 0.05 dB induced attenuation
• 1550/1625 nm (30 mm mandrel, 100 turns): ≤ 0.05 dB induced attenuation
Point Discontinuity
• 1550 nm: ≤ 0.05 dB
– Typical Applications
Long-haul terrestrial and submarine transmission, WDM systems, metropolitan area networks, and data center interconnects where low dispersion and minimal attenuation are critical.
