Corning Single Mode fiber SMF-28 Optical Bare Fiber 2260 M / 2km

Corning SMF-28 single-mode optical bare fiber delivers high-performance transmission across telecommunications, data, and utility networks. This 2260-meter spool is manufactured using Outside Vapor Deposition (OVD) to achieve ultra-pure synthetic glass with consistent geometry, high strength, and low attenuation. The fiber meets ITU-T G.652, TIA/EIA-492CAAA, IEC 60793-2-50 Type B1.3, and Bellcore GR-20-CORE standards.

– Technical Specifications

Optical Properties
• Core diameter: 8.2 µm or 8.3 µm
• Cladding diameter: 125 µm ±1 µm
• Numerical aperture: 0.13 or 0.14 (at 1% power level, 1310 nm)
• Mode field diameter: 9.2 µm nominal @ 1310 nm (8.8–9.6 µm range); 10.7 µm ± 0.5 @ 1550 nm (9.9–10.9 µm range)
• Zero dispersion wavelength: 1300–1324 nm
• Zero dispersion slope: ≤0.092 ps/(nm²•km)
• Cable cutoff wavelength: ≤1260 nm

Attenuation
• @ 1310 nm: ≤0.35 dB/km (standard grade)
• @ 1550 nm: ≤0.25 dB/km (standard grade)
• @ 1383 nm (water peak): ≤2.1 dB/km
• @ 1625 nm: ≤0.20 dB/km
• Point discontinuity: ≤0.10 dB

Mechanical Characteristics
• Coating: CPC system with 245 µm ± 5 µm outer diameter
• Proof test stress: ≥100 kpsi (0.7 GPa) across entire length
• PMD link design value: ≤0.20 ps/√km

– Key Features

• Optimized for 1310 nm wavelength region with dual-band capability at 1550 nm
• Supports TDM and WDM system configurations
• Consistent attenuation across 1285–1330 nm band (max 0.03 dB/km variation)
• Attenuation stability across 1525–1575 nm band (max 0.02 dB/km variation)

– Typical Applications

• Telephony and voice transmission
• Long-haul telecommunications networks
• Cable television infrastructure
• Submarine and undersea systems
• Utility and SCADA network links

– Compatibility & Integration

SMF-28 bare fiber integrates with standard connectorization and splicing equipment designed for ITU-T G.652-compliant single-mode fiber. The 2260-meter length accommodates medium-span installations with minimal splicing.