These products are made by Lightera™, but are marketed by Furukawa Electric.
（April 9, 2025 News release：About “Lightera™”, new brand of optical fiber/cable related products. 
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- Smallest cable diameter, Highest core density
- Up to 6912 fiber count
- Central core structure
Rollable Ribbon technology
Imagine a technology leap that doubles a cable’s fiber optic density while reducing the size of that same cable. Furukawa Electric Rollable Ribbon high density optical fiber cable are delivering that advance today. Furukawa Electric Rollable Ribbon Cables have the smallest diameter and highest core density *. At the same time, these cables allow installers to double the density of vital pathways versus standard cable designs. This makes Rollable Ribbon fiber cables an ideal choice for indoor and outdoor use, connecting data centers, or serving as the distribution for dense FTTx and mobility networks.
We create these Rollable Ribbons by partially bonding single 200 µm fibers or 250 µm fibers to each other to form a flexible cable. This design allows for a highly efficient ribbon splicing and easy single or multiple fiber breakout. These completely gel-free cable designs also help to reduce the time required for splicing preparation.
Above all, doubling the density of your fiber means doubling your transmission capacity, doubling your capability, and doubling your ability to get the job done.
Advantages
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Smallest cable diameter &
Highest core density * with a proven track recordFurukawa Electric has a proven track record in providing the smallest diameter and highest density cables for high fiber count applications. 6912F OSP cable, with a diameter of 29 mm, is the world's smallest cable of its kind, demonstrating the highest core density of 10.5 cores/mm2.
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Space saving
Highest density optical fiber cables provide maximum capacity in limited space.
Furukawa Electric has achieved the world's first installation of the 6912F cable into a 1.25 inch diameter conduit.
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Installatin time saving
Totally jell free dry structure achieves faster cable preparation in field.
Rollable Ribbon mass fusion splicing reduces splicing time.
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Total cost saving
Compared to the installation of conventional cables, using one Rollable Ribbon Cable reduces construction time, resulting in lower costs and minimizing the overall expenses.
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Long cable length per reel reduces splice points
The small cable diameter enables an extended cable length per reel.
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Environmentally friendly
Optical fiber and cable production at the Mie Works to be powered entirely by substantially renewable energy
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Outdoor/Indoor cable (UL type/CPR type) available
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Blowing installation cable type available
Product Lineup
| Application | OSP (Outside plant) | OSP (Outside plant) Blown installable |
Outdoor/Indoor UL rated |
Outdoor/Indoor CPR rated |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fiber count | 1728 | 3456 | 6912 | 1728 | 3456 | 6912 | 1728 | 3456 | 6912 | 1728 | 3456 | 6912 |
| Optical fiber | ITU-T G.652.D and ITU-T G.657.A1 | |||||||||||
| Outer diameter [mm] |
19.5 | 23.5 | 29 | 20.5 | 25 | 31.5 | 19.5 | 24 | 31 | 18.5 | 25 | 33.5 |
| Weight [kg/km] |
290 | 400 | 640 | 310 | 460 | 710 | 380 | 540 | 920 | 330 | 580 | 1040 |
| Flame retardant | – | – | – | – | – | – | UL1666 | UL1666 | UL1666 | B2ca-s1b, d0,a1 |
Cca-s1b, d0, a1 |
B2ca-s1b, d0, a1 |
The above cables use 200 μm fiber Rollable Ribbons.
Other fiber count Rollable Ribbon cables are also available.
* As of December 2023, Furukawa Electric 3456F & 6912F OSP cables have the smallest cable diameter and highest core density among cables using 200 μm fiber in the 3456F & 6912F series.
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