Corning SMF-28(R) ULL FIBER is an ultra-low-loss, single-mode optical fiber engineered for long-haul terrestrial and submarine transmission systems. This bare fiber delivers exceptional performance across extended network spans with maximum attenuation of 0.17 dB/km at 1550 nm and optimized dispersion characteristics. The fiber meets stringent industry standards for compatibility and reliability in demanding high-capacity data transmission architectures.
Technical Specifications
Optical Performance:
• Fiber Type: Single-mode
• Maximum Attenuation: 0.17 dB/km at 1550 nm (available down to 0.15 dB/km)
• Attenuation Uniformity (1285–1330 nm): Max. 0.03 dB/km difference from 1310 nm reference
• Attenuation Uniformity (1525–1575 nm): Max. 0.02 dB/km difference from 1550 nm reference
• Attenuation at 1625 nm: Max. 0.03 dB/km difference from 1550 nm reference
• Zero Dispersion Wavelength (λ₀): 1304 nm to 1324 nm
• Zero Dispersion Slope (S₀): ≤ 0.092 ps/(nm²·km)
• Dispersion at 1550 nm: ≤ 18.0 ps/(nm·km)
• Dispersion at 1625 nm: ≤ 22.0 ps/(nm·km)
• PMD Link Design Value: ≤ 0.04 ps/√km
• Maximum Individual Fiber PMD: ≤ 0.1 ps/√km
Physical Characteristics:
• Core Diameter: 8.2 µm
• Cladding Diameter: 125.0 ± 0.7 µm
• Cladding Non-Circularity: ≤ 0.7%
• Mode-Field Diameter at 1310 nm: 9.2 ± 0.5 µm
• Mode-Field Diameter at 1550 nm: 10.7 ± 0.5 µm
• Numerical Aperture: 0.14 (at 1310 nm)
• Cable Cutoff Wavelength: ≤ 1260 nm
• Fiber Curl: ≥ 4.0 m radius of curvature
Environmental Stability:
• Induced Attenuation (−60°C to +85°C): ≤ 0.05 dB/km
• Induced Attenuation (Temperature-Humidity Cycling, −10°C to +85°C, 98% RH): ≤ 0.05 dB/km
• Macrobend Loss at 1550 nm (100 turns, 16 mm mandrel): ≤ 0.1 dB
Mechanical Properties:
• Proof Test: ≥ 100 kpsi (0.69 GPa) across entire fiber length
– Key Features
• Ultra-low attenuation minimizes signal degradation over extended distances
• Controlled dispersion characteristics enable high-speed, high-capacity transmission
• Low PMD ensures signal integrity in demanding applications
• Temperature and humidity stability maintains performance across operating environments
• Mechanical proof testing guarantees reliability under installation and operational stress
– Typical Applications
• Long-haul terrestrial transmission networks
• Submarine cable systems
• High-capacity data transport
• Extended network reach architectures
– Compatibility & Integration
SMF-28(R) ULL complies with ITU-T G.652.B and related industry standards, ensuring compatibility with conventional single-mode network components and systems. Spool length: 15,000 m.
