Thick Wall Aluminum Layered FIMT

OPGW: Thriving in Harsh Environments

OPGW is often subject to harsh climate conditions such as wind, ice, and rain. The 3 mm outer aluminum casting of the Thick Wall Aluminum Layered FIMT (ATT) makes it suitable for deployments in the harshest environments. A stainless-steel tube protects the optical fibers from mechanical stress. Additionally, an aluminum layer protects the steel, preventing galvanic corrosion within the cable, which is a common cause for OPGW failure.

We can produce the Thick Wall Aluminum Layered FIMT with as many as 144 fibers at 250μm or 192 fibers at 200μm. The combination of its high optical fiber count, performance, and durability makes the cable one of the most financially sound solutions on the market.

Our ability to offer custom solutions further enhance the potential of our protected OPGW to thrive in any situation. Get in touch and speak to one of our experts today to see if our customizable Thick Wall Aluminum Layered FIMT is suitable for your project.


Product abbreviation ATT
Cable usage Data Transmission
Outer diameter up to 8.5 mm
Aluminum wall thickness 0.95 mm up to 3.0 mm
Aluminum weight up to 140 kg per km
Operational temperature range -40°C up to +80°C
Maximum fiber count 144 (250µm), 192 (200µm)
Maximum continuous length Up to 15 km
Filling compound H2 absorbing optionally
High electrical performance Acc. latest datasheet
Perfect usage for OPGW, OPPC, special cables

All values, product specifications and other given data are subject to change without notice to improve reliability, function, design or otherwise. Information contained in this data sheet are up-to-date as at the date of issue. As NBG cannot control or anticipate the conditions under which this product may be used, each user should review the information in specific context of the planned use. To the maximum extent permitted by law, NBG will not be responsible for damages of any nature resulting from the use or reliance upon the information contained in this data sheet.

Product overview created by Patrick Weissinger – 21.03.2019

Optical fibers

Metal tube

Aluminum tube


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