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Corning SMF-28 ULL 9/125/242±5μm Optical Fiber per km Spool

Corning SMF-28 ULL 9/125/242±5μm Optical Fiber per km Spool

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Part Number: CORNING-SMF28-ULL

Corning SMF-28 ULL Optical Fibers, ultra-low-loss fiber, 1km to 50.4km optional per roll

Lowest loss of any 80 µm2 terrestrial-grade, single-mode fiber


Corning’s SMF-28 ULL optical fiber portfolio has the lowest-loss 80 µm2 terrestrial-grade fibers available in the market – with millions of kilometers sold and deployed worldwide in the harshest environments and most demanding terrestrial core networks.

Compliant to ITU-T G.654.C, this ultra-low-loss fiber can be leveraged to extend network span lengths, skip amplification sites, upgrade to faster bit rates, add network components for improved flexibility, and/or lengthen the distance between regenerators.

Ultra-low loss optical fiber allows carriers and cloud operators to extend optical reach at very high data rates and makes networks scalable for higher capacities as the demand for bandwidth continues to grow.

All products in the SMF-28 ULL fiber portfolio are also available in a smaller 200 μm outer diameter for use in high-density cable designs. SMF28 ULL fiber, compliant to G.654.C, is also available with advanced bend capability, meeting the fiber macrobend loss requirements of the ITU-T G.657.A1 standard.

SMF-28 ULL fiber 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.




This product belongs to F-tone Networks' optical components product line. For detailed specifications, please contact our sales team. Thank you!
Important Notice:
Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by F-tone Networks before they become applicable to any particular order or contract. In accordance with the F-tone Networks policy of continuous improvement specifications may change without notice.
The publication of information in this data sheet does not imply freedom from patent or other protective rights of F-tone Networks or others. Further details are available from any F-tone Networks sales representative.

Power and Wavelength Testing

Test the signal delivering strength and wavelength, to ensure the signal decoding capacity of the receiver, and the wavelength remains consistent from the transmitter to the receiver.

Power and Wavelength Testing

Traffic Testing

Test the bit error rate and packet loss rate, to make them meet the corresponding standards and ensure the performance of transceivers.

Traffic Testing

Optical Performance Testing

Test the transceivers' eye diagram situation, receiving sensitivity, extinction ratio, wavelength, light-emitting, light-receiving, current and voltage, to ensure the signal quality, stability and reliability of the transmission.

Optical Performance Testing

End Face Testing

Check the end face of the transceivers and keep them clean for more stable data transmission, better performance, and durability.

End Face Testing

Various Switch Tests

Every module is quality tested for compatibility in the multi-brand switches environment, guaranteeing flawless operations.

Various Switch Tests

About F-tone Networks

F-tone Networks is now a world leader in development of optical transceivers and provide a wide range of high-speed optical solutions for optical communication networking, especially for AI, Data Center, enterprise data networking, Industry, aerospace, mining, shipbuilding, railway, metro, long haul transport networking, and mobile access networking applications
F-tone Networks invested in foundational photonics technologies and extensive product development and engineering with global presence in many area also.