Fis Single Mode fiber DSF Optical Bare Fiber 20000 m / 20km

The FIS DSF (Dispersion-Shifted Fiber) is a single-mode bare optical fiber engineered for long-haul, high-speed communication networks. It shifts zero-dispersion to the 1550 nm wavelength region, aligning with the minimum attenuation window and enabling efficient signal transmission over extended distances with minimal distortion. Supplied on a 20 km spool, this ITU-T G.653 compliant fiber delivers the optical performance required for DWDM, telecommunications, and CATV deployments.

– Technical Specifications

Fiber Type & Standard
• Dispersion-Shifted Fiber (DSF), single-mode
• ITU-T Standard G.653

Optical Characteristics
• Zero-Dispersion Wavelength: nominally shifted to 1550 nm region
• Chromatic Dispersion: minimized across 1550 nm to 1600 nm operating range
• Attenuation: optimized for 1550 nm window
• Operating Wavelength: 1550 nm to 1600 nm; suitable for SDH and WDM applications above 1550 nm

Geometrical Characteristics
• Cladding Diameter: 125.0 ± 1.0 µm
• Coating Diameter: 245 ± 7 µm (mechanically strippable)

Mechanical & Environmental
• Operating Temperature: −40°C to +85°C
• Storage Temperature: −70°C to +85°C
• Minimum Installation Bend Radius: 5.5 cm
• Minimum Operating Bend Radius: 2.8 cm
• Bend Loss: <0.5 dB increase for 100 turns at 37.5 mm radius at 1550 nm

Delivery Format
• Length: 20,000 m (20 km) spool
• Configuration: bare fiber; connectorization available upon request

– Key Features

• Zero-dispersion wavelength aligned to minimum attenuation window
• Optimized performance for long-distance, high-bandwidth transmission
• Standard ITU-T G.653 compliance ensures interoperability
• Flexible spool length supports custom splicing and cabling

– Typical Applications

• Long-haul, high-speed communication networks
• Dense Wavelength Division Multiplexing (DWDM)
• Telecommunications infrastructure
• CATV networks
• OTDR testing and launch cable applications

– Compatibility & Integration

DSF fiber is engineered for 1550 nm operation and integrates into networks optimized for that wavelength region. Bare fiber configuration allows custom termination and splicing for field installations.