Corning SMF-LS Optical Bare Fiber 25 km CPC6

The Corning SMF-LS Optical Bare Fiber 25 km CPC6 is a single-mode fiber engineered for long-haul telecommunications and enterprise data transmission. This 25 km spool delivers low attenuation across standard operating wavelengths with minimal chromatic dispersion, making it suitable for high-speed network deployments requiring extended reach and reliable performance.

Technical Specifications

• Core diameter: 8.2–8.3 µm


• Cladding diameter: 125 µm


• CPC6 coating outside diameter: 245 µm


• Spool length: 25 km (≈25,259 m) Optical Performance


• Attenuation at 1310 nm: ≤0.34 dB/km


• Attenuation at 1550 nm: ≤0.19 dB/km


• Attenuation at 1383 nm: ≤2.1 dB/km


• Numerical aperture: 0.14


• Zero dispersion wavelength (λ₀): 1313 nm (range 1304–1324 nm)


• Zero dispersion slope: 0.086 ps/(nm²
  
  km)


• Cable cutoff wavelength: ≤1260 nm


• Polarization mode dispersion (PMD) link value: ≤0.1 ps/km


• Maximum individual fiber PMD: ≤0.2 ps/km


• Point discontinuity: No single point >0.10 dB at 1310 nm or 1550 nm Mechanical & Environmental


• Tensile proof stress: ≥100 kpsi (0.7 GN/m²)


• Operating temperature: −60°C to +85°C

Key Features

• CPC6 dual-acrylate coating provides mechanical protection with low-friction stripping


• Craft-friendly termination and splicing characteristics


• Compatible with loose tube, ribbon, slotted core, and tight buffer cable designs


• Low chromatic dispersion near 1550 nm minimizes intersymbol interference


• Supports 0.5 ps/√km maximum PMD network design requirements

Typical Applications

• Long-distance terrestrial backbone networks


• High-speed data center interconnects


• Metropolitan and regional telecommunications systems


• Enterprise campus fiber runs requiring 25 km reach

Compatibility & Integration The SMF-LS bare fiber integrates into standard single-mode cable assemblies. Its 125 µm cladding conforms to IEC and ITU standards for universal connector and splice compatibility.