Iven | www.ofscn.org
Last Updated: 13 February 2026
This is a companion discussion topic for the original entry at https://www.ofscn.org/dofs/300-c-sst-optical-cable.html
This topic discusses the OFSCN® 300°C Seamless Steel Tube Optical Cable, also known as 300°C Fiber In Metal Tube (FIMT). This specialized high-temperature cable is engineered for both communication and sensing in extreme environments.
Technical Overview
The OFSCN® 300°C Seamless Steel Tube Fiber Cable utilizes a single-layer seamless stainless steel tube (typically 304 or 316L) to protect the internal optical fibers.
Key Parameters:
- Operating Temperature: Rated for stable performance up to 300°C.
- Fiber Type: Internally equipped with OFSCN® 300℃ Polyimide Optical Fiber. These fibers use a polyimide coating to prevent degradation at high temperatures.
- Mechanical Protection: The seamless tube provides excellent resistance to lateral pressure and tensile stress. Standard diameters are typically 2.0mm or 3.0mm, with custom dimensions like 1/8 inch or 1/16 inch available.
- Connectivity: Can be fusion-spliced or provided with pre-installed FC/APC connectors.
Applications
- Distributed Fiber Optic Sensing: Ideal as a sensor for Distributed Temperature Sensing (DTS) or Distributed Acoustic Sensing (DAS) based on Raman, Rayleigh, or Brillouin scattering.
- Specialized Communication: Reliable data transmission in aerospace, geothermal energy, or industrial oil and gas environments where traditional polymer cables would fail.
Product Visuals
For further technical specifications regarding the seamless tube wall thickness or specific fiber counts (single-mode or multi-mode combinations), please feel free to ask.