Alkatel smf-28 Optical Bare Fiber 26.5km

The Alcatel SMF-28 Optical Bare Fiber is a single-mode fiber supplied on a 26.5 km spool, designed for telecommunications network simulation, testing, and training applications. It delivers low attenuation and high transmission quality across extended distances, making it ideal for long-haul optical system development and verification.

– Technical Specifications

Optical Characteristics
• Fiber Type: Single-Mode Fiber (SMF)
• Compliance: ITU-T G.652.D (backward compatible with legacy G.652); exceeds ITU-T G.657.A1
• Attenuation at 1310 nm: ≤ 0.32 dB/km
• Attenuation at 1550 nm: ≤ 0.18 dB/km (typical 0.16 dB/km)
• Attenuation at 1625 nm: ≤ 0.20 dB/km
• Chromatic Dispersion at 1550 nm: ≤ 18.0 ps/(nm•km)
• Chromatic Dispersion at 1625 nm: ≤ 22.0 ps/(nm•km)
• Zero Dispersion Wavelength: 1300–1324 nm
• Zero Dispersion Slope: ≤ 0.092 ps/(nm²•km)
• Polarization Mode Dispersion (PMD) Link Design Value: ≤ 0.04 ps/√km
• Mode-Field Diameter at 1310 nm: 9.2 ± 0.4 µm
• Mode-Field Diameter at 1550 nm: 10.4 ± 0.5 µm
• Core Diameter: 8.2 µm
• Cladding Diameter: 125.0 ± 0.7 µm
• Coating Diameter: 245 ± 5 µm
• Numerical Aperture: 0.14 (at 1310 nm)
• Cutoff Wavelength: ≤ 1260 nm
• Point Discontinuity: ≤ 0.05 dB (at 1310 nm and 1550 nm)

Mechanical Properties
• Proof Test: ≥ 100 kpsi (0.7 GPa)

Environmental Performance
• Operating Temperature Range: −60°C to +85°C
• Induced Attenuation (temperature): ≤ 0.05 dB/km (−60°C to +85°C)
• Induced Attenuation (temperature-humidity cycling): ≤ 0.05 dB/km (−10°C to +85°C, up to 98% RH)

– Key Features

• Extended spool length enables long-haul transmission testing without splicing
• Minimal attenuation across C-band and L-band windows
• Tight mode-field diameter tolerances support low-loss connections
• Temperature-stable performance across industrial operating ranges

– Typical Applications

• Long-distance optical network simulation and characterization
• Transmission system testing and validation
• Fiber optic training and laboratory setups
• Extended-reach system development

– Compatibility & Integration

Full backward compatibility with G.652 legacy installations. Performance exceeds G.657.A1 requirements, supporting both conventional and bend-insensitive applications.