SMF-28® Ultra Faser | Singlemode-Glasfaser | Corning

Industry-leading attenuation with ITU-T G.657.A1 bend and 9.2 µm mode field diameter in traditional and reduced diameters

Corning® SMF-28® Ultra Optical Fibers

Corning® SMF-28® Ultra Optical Fibers

SMF-28® Ultra single-mode optical fibers combine industry-leading attenuation, macrobend performance that exceeds ITU-T G.657.A1, and favored 9.2 µm mode field diameter. These fibers are designed for carrier (access, mobile, FTTH) and data center (indoors, DCI) applications and are fully backward compatible with the installed base of legacy single-mode fibers. With SMF-28 Ultra fibers, network operators have the freedom to deploy fiber-rich cables to address capacity and congestion.

SMF-28 Ultra fiber is available in a traditional 242 µm diameter as well as a reduced 200 µm diameter option for smaller, lighter, high-fiber-count cables. 

How To Order SMF-28® Ultra Optical Fibers

SMF-28® Ultra fibers can be purchased natural or colored. Fibers with Corning® ColorPro® identification technology, our coloring solution, enable cable manufacturers to reduce cost, minimize footprint, and leverage an enhanced product offering.

To learn more about our products or to place an order, please contact your sales representative, call our Customer Service Department at 1-607-248-2000 (U.S. and Canada) / +44-1244-525-320 (Europe), or email us at