300 degree high temperature resistant optical fiber - Single mode polyimide optical fiber - Sensing/Communication Fiber - Picture Parameters - Manufacturer Brand Price - DCYS - ofscn.org

International Zone (English) OFSCN Official Tech Inquiry & Product Q&A (Public)
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Iven | www.ofscn.org Last Updated: 01 March 2026

This product is a single-mode polyimide optical fiber that can withstand high temperatures and low temperatures. The coating material is polyimide, with options for doped/pure silicon core.

This is a companion discussion topic for the original entry at https://www.ofscn.org/optical-fibers/polyimide-coated-sm-300.html%20%e8%bf%99%e4%b8%80%e6%ac%be
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This high-temperature resistant optical fiber is a core product in our specialty fiber line, specifically designed for extreme environments where standard acrylate coatings would fail.

Technical Overview of OFSCN® 300℃ SM Polyimide Optical Fiber

The OFSCN® 300℃ SM Polyimide Optical Fiber utilizes a specialized polyimide coating that maintains structural integrity and optical performance across a vast temperature gradient.

Key Technical Specifications:

  • Operating Temperature: -200℃ to +350℃ (Excursions up to 400℃).
  • Fiber Geometry: 9μm Core / 125μm Cladding / 155μm Coating.
  • Core Material: Standard doped core (pure silica core available for radiation resistance or specific sensing needs).
  • Standards: Based on G.652D; bend-insensitive versions (G.657 A2/B3) are also available upon request.

Product Visuals:

OFSCN® 300℃ Polyimide Fiber
OFSCN® 300℃ Polyimide Fiber768×144 35.2 KB

OFSCN® High Temp Fiber Detail
OFSCN® High Temp Fiber Detail768×144 35.2 KB

Why Polyimide Coating?

Unlike traditional buffers, polyimide is chemically bonded to the glass cladding. This prevents the “piston effect” and ensures minimal signal attenuation even at 300°C. It is the industry standard for:

  1. Distributed Fiber Optic Sensing (DTSS/DTS): Providing accurate strain and temperature transfer.
  2. Aerospace & Oil/Gas: Reliable communication in high-heat zones.
  3. Medical Sterilization: Withstanding repeated autoclaving cycles.

For applications requiring even higher mechanical protection, this fiber is often integrated into our OFSCN® 300°C Distributed Fiber Temperature Sensor, which adds a seamless stainless steel tube jacket.