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

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30 Day Warranty

Technical Support

NIST Traceable Calibration

Net-30 Terms

21 in stock

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

Dispersion-shifted fiber (DSF), specified in ITU-T G. 653, is a type of single-mode optical fiber with a core-clad index profile tailored to shift the zero-dispersion wavelength from the natural 1300 nm in silica-glass fibers to the minimum-loss window at 1550 nm.


dispersion-shifted fiber (DS,DSF) spool.

Also we can re-spool to any distance you may desire. We have the fiber in <=1 to 25 km available. Fiber spool will show both ends. Please let us know if you desire to have connectors on the end of the spool/s. 

You may request a price on the connectors. 

This unit is in good working condition and comes with a 30 day warranty.  We also offer a 14 day ROR.  We have been in business for over 15 years, our main focus is customer satisfaction through excellent service and providing high quality test equipment.  Please let us know if you have any questions or other test equipment needs.


We offer fast domestic and international Shipping.  Shipping using the customer’s fedex, ups, or dhl account is available upon request.  Overseas customers please consider freight / customs charges before bidding.  Lead time for most units is usually between 1-3 business days.



Additional information

Weight 60 lbs
Dimensions 24 × 24 × 20 in




Product Type