This 2 km spool of bare single-mode optical fiber is engineered to SMF-28 compatibility standards for high-bandwidth, long-distance transmission with minimal signal degradation. The bare fiber construction enables direct fusion splicing and integration into custom cabling assemblies without factory jacketing. Designed for test labs, experimental setups, and short-haul communication links, it delivers reliable performance across the C and L bands while maintaining stringent ITU-T G.652 compliance.
Technical Specifications
Optical Performance
• Fiber Type: Single-mode, step-index, matched-clad
• ITU-T Compliance: G.652.B or G.652.D
• Operating Wavelengths: 1310 nm (primary), 1550 nm (secondary)
• Attenuation @ 1310 nm: ≤ 0.35 dB/km (standard) to ≤ 0.30 dB/km (premium)
• Attenuation @ 1550 nm: ≤ 0.25 dB/km (standard) to ≤ 0.18 dB/km (premium)
• Zero Dispersion Wavelength (λ₀): 1300–1324 nm
• Zero Dispersion Slope (S₀): ≤ 0.092 ps/(nm²•km)
• Chromatic Dispersion @ 1550 nm: ~17–18.0 ps/(nm•km)
• Polarization Mode Dispersion: ≤ 0.2 ps/√km (individual fiber); ≤ 0.1 ps/√km (link design); ≤ 0.04 ps/√km (ULL variants)
• Mode Field Diameter @ 1310 nm: 9.2 ± 0.4 µm to 9.3 ± 0.5 µm
• Mode Field Diameter @ 1550 nm: 10.5 ± 0.5 µm to 10.5 ± 1.0 µm
• Numerical Aperture: 0.13–0.14
• Cut-off Wavelength: ≤ 1260 nm
• Rayleigh Backscatter Coefficient @ 1310 nm: -77 dB
• Rayleigh Backscatter Coefficient @ 1550 nm: -82 dB
Physical & Mechanical
• Core Diameter: 8–10.5 µm
• Cladding Diameter: 125.0 ± 0.7 µm to 125.0 ± 1.0 µm
• Proof Test Level: ≥ 100 kpsi (0.7 GPa)
• Tensile Strength: > 5 GPa
• Fatigue Resistance Parameter (nd): 20
• Minimum Bend Radius: ≥ 4.0 m
• Operating Temperature: -60°C to +85°C
– Key Features
• Bare fiber design enables splicing and custom integration
• Proven SMF-28 compatibility ensures standards adherence
• Low attenuation across 1310 nm and 1550 nm windows
• Tight mode field diameter tolerance supports precise coupling
• High proof test strength ensures reliability under field stress
– Typical Applications
• Test and measurement labs
• Optical fiber splicing and prototype assemblies
• Short-distance single-mode links (up to 2 km)
• Experimental fiber optic systems
• Custom coupler and component fabrication
– Compatibility & Integration
Full SMF-28 compatibility ensures drop-in performance with standard single-mode components, connectors, and splicing equipment. The 2 km length supports lab runs and field trials. Bare construction permits post-integration jacketing or direct fusion splicing without pre-applied coatings.
