Fiber optic components for HV/MV cables
Our FIMTs are the backbone of modern power and communication networks.
FIMT for high voltage/medium voltage cables
We provide specialized Fiber in Metal Tubes (FIMTs) as a fundamental component for companies manufacturing cables for High Voltage/Medium Voltage applications. Our FIMTs stand out in the market with their exceptional fiber density, accommodating up to 192 fibers in a single tube. This capability allows for a more efficient use of space while maximizing data transmission potential. Additionally, our FIMTs are available in long continuous lengths of up to 50 kilometers, significantly reducing the need for splicing and ensuring smoother, more reliable cable performance. Behind every product is NBG’s commitment to high-quality manufacturing and rigorous quality control, ensuring that every FIMT component you receive is of the highest standard, ready to be integrated into your sophisticated cable systems.
Example configurations
All our products are custom and designed to spec. Below are just a few examples to demonstrate our production capabilities.
FIMT outer diameter
from 1.10mm / 0.043 ″
to 7mm / 0.276 ″
Fiber count
1-144 (250μm)
1-192 (200μm)
Armouring
Diameter starting from 0.6mm
Outer insulation
PA / LD / HD / XLPE / PVC FRNC / TPE / Semi-conductive PE
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Frequently asked questions
What are Fiber in Metal Tubes (FIMTs)?
FIMTs are specialized tubes made from metal that encapsulate optical fibers. These tubes protect the fibers from external physical and environmental conditions, ensuring secure and reliable data transmission, especially in high voltage and medium voltage cable applications.
How do FIMTs enhance the efficiency of high voltage/medium voltage cables?
FIMTs enhance efficiency by providing a robust protective environment for optical fibers, which are used for monitoring and communication purposes alongside the electrical transmission. This dual functionality allows for real-time monitoring and control, leading to optimized operational performance and reduced downtime.
Can FIMTs be customized for specific project needs?
FIMTs enhance efficiency by providing a robust protective environment for optical fibers, which are used for monitoring and communication purposes alongside the electrical transmission. This dual functionality allows for real-time monitoring and control, leading to optimized operational performance and reduced downtime.
What metals are used to manufacture FIMTs?
FIMTs are typically made from stainless steel or superalloys, offering high resistance to corrosion and physical stresses. Specific materials include common stainless steel variants and superalloys such as Alloy 625, Alloy 825, etc.
How are FIMTs integrated into high voltage/medium voltage cables?
FIMTs are integrated into the cable structure either as part of the core or layered within the cable, depending on the cable design. This integration provides added protection for the optical fibers and contributes to the overall strength and durability of the cable.
Are there specific sensing applications where FIMTs prove particularly beneficial?
Yes, FIMTs are ideal for sensing applications such as Distributed Temperature Sensing (DTS), Distributed Acoustic Sensing (DAS), and Distributed Strain Sensing (DSS). These applications are crucial for monitoring the integrity and performance of high voltage/medium voltage cables.