The Corning MetroCor™ Optical Bare Fiber 4 KM is a non-zero dispersion-shifted single-mode optical fiber engineered for high-capacity DWDM transmission in metropolitan and regional networks. Operating within the EDFA window, this fiber delivers low negative dispersion across the C-band and L-band, significantly reducing the need for expensive dispersion compensation modules and extending optical signal reach. The result is lower network operating costs and extended performance from standard DM-DFB lasers without DCM support.
Technical Specifications
Optical Performance
• Attenuation: ≤0.50 dB/km at 1310 nm; ≤0.25 dB/km at 1550 nm and 1605 nm
• Dispersion: -10.0 to -1.0 ps/(nm·km) over 1530–1605 nm range
• Polarization Mode Dispersion (PMD): ≤0.1 ps/√km link value; ≤0.2 ps/√km maximum individual fiber
• Mode-Field Diameter (MFD): 7.60–8.60 µm at 1550 nm
• Cable Cutoff Wavelength: ≤1260 nm
• Water Peak Attenuation: ≤0.40 dB/km at 1383 ± 3 nm
• Point Discontinuity: ≤0.10 dB at 1310 nm and 1550 nm
Physical Specifications
• Cladding Diameter: 125 µm ± 0.5 µm
• Coating Outside Diameter: 245 µm ± 10 µm (acrylate, 250 µm typical)
• Core-to-Cladding Offset: ≤0.3 µm
• Full-length proof test applied
Environmental
• Operating Temperature: -60 °C to 85 °C
– Key Features
• Low negative dispersion minimizes DCM requirements and total cost of ownership
• Optimized for dense wavelength division multiplexing in C-band and L-band windows
• Tight PMD specifications enable long-distance, high-capacity deployments
• Compliant with IEC SC 86A/WG1 PMD measurement standards
– Typical Applications
• Metro and regional network emulation
• System-level DWDM simulations
• Transmission path testing in telecom laboratories and educational facilities
– Compatibility & Integration
Designed for DWDM systems operating within the EDFA window. Compatible with standard single-mode fiber connector and termination practices.
