--- type: product schema_version: 1 stock_number: "56011-6" canonical_url: "https://www.artisantg.com/TestMeasurement/56011-6/Corning-SMF-28-20km-Optical-Fiber-Spool" json_url: "https://www.artisantg.com/TestMeasurement/56011-6/Corning-SMF-28-20km-Optical-Fiber-Spool.json" generated_at: "2026-11-07T07:45:05.881Z" last_updated: "2026-10-30T19:05:41.383-05:00" --- # Corning SMF-28 20km Optical Fiber Spool _Summary and Categories are this item's record. The description sections and FAQ are machine-assisted and can contain errors; where they disagree with the record, the record is correct, and where description sections disagree with each other, Details wins._ ## Summary - Manufacturer: Corning - Model: SMF-28 - Condition: New From Surplus Stock - Price: Quote only - Availability: Not in Stock - Warranty: No Warranty - ITAR restricted: No - Shipping weight: 15 lb - Shipping dimensions: 18X18X12 in ## Categories - Test Equipment > Optical Test > Fiber Spools (primary) ## Details This item is a spool of Corning SMF-28 fiber. The SMF-28 ULL fiber, fully compatible with legacy single-mode fibers (G.652 compatible), has the lowest loss of any terrestrial grade fiber with maximum attenuation available between 0.17 and 0.18 dB/km at 1550 nm as well as the lowest PMD of any ITU-T G.652 compliant optical fiber featuring a ≤ 0.04 ps/vkm PMDQ link design specification. Combined, these features provide additional network margin that can be leveraged to extend span lengths between amplifiers, skip amplification sites, upgrade to faster bit rates, or lengthen the unregenerated reach. Length: >20km This unit is being sold new from surplus stock without a warranty. It has been priced accordingly. ## Images -