The LUCENT BARE SINGLE MODE FIBER 25km is a bare optical fiber engineered for long-haul telecommunications and data communication networks. This ITU-T G.652.B compliant single-mode fiber delivers ultra-low attenuation across standard telecom wavelengths, making it ideal for extending network reach without signal regeneration across extended distances.
Technical Specifications
Physical Characteristics
• Core diameter: 8.2 µm
• Cladding diameter: 125 ± 1 µm
• Coating diameter: 245 ± 5 µm
• Mode field diameter: 9.3 ± 0.5 µm @ 1310 nm; 10.5 ± 1.0 µm @ 1550 nm
• Numerical aperture: 0.13–0.14
• Index profile: Step-index
• Buffer coating: Dual acrylate, mechanically strippable
• Proof test: 100 kpsi (0.7 GPa)
• Operating temperature range: −60 °C to +85 °C
• Coating strip force: 0.7–8.9 N
Optical Performance
• Operating wavelength: 1310/1550 nm
• Maximum attenuation: ≤0.35 dB/km @ 1310 nm (standard); ≤0.25 dB/km @ 1550 nm (standard)
• Measured attenuation: as low as 0.202 dB/km @ 1.55 µm
• Cut-off wavelength: ≤1260 nm
• Zero dispersion wavelength: 1304–1324 nm
• Zero dispersion slope: ≤0.092 ps/(nm²·km)
• Dispersion coefficient @ 1550 nm: 18 ps/(nm·km)
• PMD link value: ≤0.1 ps/√km
• Maximum individual fiber PMD: ≤0.2 ps/√km
• Point discontinuity: no discontinuity >0.10 dB @ 1310 nm or 1550 nm
• Attenuation at water peak (1383 ± 3 nm): ≤2.1 dB/km
– Key Features
• SMF-28 compatible for drop-in integration into existing networks
• Standards compliance: ITU-T G.652.B, TIA/EIA Class IVA, IEC 60793-2-50 B1.1
• Ultra-low attenuation supports 25 km spans with minimal power budget consumption
• Dual acrylate coating enables field stripping without specialized tooling
• Mechanical durability verified to 0.7 GPa proof test stress
– Typical Applications
• Long-haul backbone networks
• Data center interconnects
• High-bandwidth terrestrial links
• Telecommunications trunk routes
• Metropolitan area networks requiring extended reach
– Compatibility & Integration
Fullly compatible with SMF-28 and SMF-28e fiber specifications. Meets or exceeds ITU-T Recommendation G.652, TIA/EIA-492CAAA, IEC 60793-2, and GR-20-CORE requirements.
