Singlemode fibers G.657.A2 (250µm u. 200µm)

The fiber for connection technology involving extreme requirements for bending properties

  • The fiber of choice for demanding service connection cabling applications (FTTB, FTTD, FTTO)
  • Designed to minimize attenuation growth due to bending (macrobending)
  • Optionally available in 16 colors plus flexible ring marking
  • Available as a mini version with 200 µm coating for increased fiber count in cable
  • Optionally available with alternative coatings for an extended temperature range – high-temperature fibers
  • Made in Germany

Your advantages at a glance

  • Can be used anywhere applications require many tight bends (structured cabling to workplace, electrical enclosure, etc.)
  • Reduced sensitivity to macrobending: increase in attenuation cut by 10x
    (at 1,625 nm) compared with standard singlemode fibers
  • Standards-compatible for use with 1,310 nm, 1,550 nm, and 1,625 nm
  • Lower attenuation across the entire range (Low Water Peak), enables a wide choice of wavelength-selective transmission channels (CWDM/DWDM, OS2 level)
  • Optimized coating system ensures very good microbending behavior, making it a proven solution for all cable designs, e.g. loose tubes, central loose tubes, slotted core cable, patch cords, j-fiber Units
  • Mini-version (200 µm) allows significantly higher fiber counts for a specified core diameter

Range of products and services

Product portfolio

  • Field-tested singlemode fibers as cost-effective and reliable fiber solutions for distribution cabling
    • Fiber-to-the-Building (FTTB)
    • Fiber-to-the-Office (FTTO)
    • Fiber-to-the-Desk (FTTD)
  • Compatibility with the installed base network
  • Optimized bending properties for rugged and flexible applications with lowest attenuation, perfect fiber geometry, and lowest diameter tolerances at the same time

Product properties

  • Lowest attenuation sensitivity for bends
  • Compatibility with standard singlemode fibers G.652.D and G.657.A1

Ordering options

  • Various lengths
  • Various attenuation classes available
  • Available with 250 µm and 200 µm coating diameters
  • Available uncolored or in 16 IEC colors
  • Additional ring marking possible (please clarify coding)
  • Various proof test levels on request
  • Available as fiber set (FiberUnit) with 6/8/12 fibers

Fields of use

  • Structured cabling
  • Data centers (rack)
  • Laying to terminal device
  • Device cabling
  • Indoor distribution-level (breakout) cable
  • Service connection outdoor cable
  • General FTTB/FTTO/FTTD applications





Please contact us for further information. We look forward to your inquiry.

Phone +49 3641-352-100

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Low Bend Loss Singlemode Fiber j-LBL G.657.A2

Low Bend Loss Singlemode Fiber j-LBL G.657.A2