Bend Performance and Compatibility
Corning® ClearCurve® ZBL Optical Fiber delivers the best macrobending performance in the industry while maintaining compatibility with current optical fibers, equipment, practices and procedures.
This full-spectrum single-mode optical fiber when subjected to smaller radii bends experiences virtually no signal loss. ClearCurve fiber exceeds the most stringent bend performance requirements of ITU-T Recommendations G.657.B3, while remaining fully compliant with ITU-T Recommendation G.652.D and the installed base of Corning® SMF-28e® and SMF-28e+® fiber.
Now network planners and designers can design optical fiber into much more challenging installations and environments, and cable designers can offer optical cables with unmatched ruggedness for easier installation and handling.
Spec Sheet:
Download Corning ClearCurve ZBL SM Fiber Spec Sheet (pdf)
Maximum Attenuation (dB/km)
- 0.33 – 0.35 (1310nm)
- 0.31 – 0.35 (1383nm)
- 0.21 – 0.24 (1490nm)
- 0.19 – 0.20 (1550nm)
- 0.21 – 0.23 (1625nm)
Attenuation vs. Wavelength:
Range (nm) Ref. λ (nm) Max. α Difference (dB/km)
1285 – 1330 1310 0.03
1525 – 1575 1550 0.02
Mode-Field Diameter
Wavelength (nm) MFD (μm)
1310 8.6 ± 0.4
1550 9.65 ± 0.5
Cable Cutoff Wavelength
λccf ≤1260 nm
Macrobend Loss
Mandrel Radius (mm) Number of Turns Wavelength(nm) Induced Attenuation(dB)
5 1 1550 ≤0.10
5 1 1625 ≤0.30
Polarization Mode Dispersion (PMD)
Value (ps/√km)
PMD Link Design Value ≤0.06
Maximum Individual Fiber ≤0.2
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