OF6806 Polyimide-Coated Fiber

Polyimide-Coated Fiber Description

Polyimide-Coated Fiber is a high-performance optical fiber that features a polyimide outer coating, known for its exceptional thermal stability, mechanical strength, and chemical resistance. Polyimide is a high-performance polymer capable of withstanding temperatures up to 400°C, with a long-term operating range of –200°C to +300°C, making this fiber ideal for extreme environments.

Key Features

• High-Temperature Resistance: Reliable operation at continuous high temperatures up to 300°C, and short-term exposure up to 400°C.
• Radiation Resistance: Maintains optical and mechanical performance in radiation environments.
• Chemical Resistance: Excellent resistance to acids, solvents, and corrosive chemicals.
• Superior Mechanical Properties: High tensile strength and robust coating integrity under thermal and mechanical stress.

Polyimide-Coated Fiber Applications

• Fiber Optic Sensing: For temperature, pressure, and strain monitoring in extreme conditions
• Aerospace and Defense: High-temperature and radiation-resistant data transmission
• Oil & Gas: Downhole and pipeline sensing applications
• Medical: Interventional procedures in demanding environments
• Nuclear and Radiation Zones: Resistant to high levels of ionizing radiation

Polyimide-Coated Fiber Packaging

Our products are packaged in customized cartons of various sizes based on the material dimensions. Small items are securely packed in PP boxes, while larger items are placed in custom wooden crates. We ensure strict adherence to packaging customization and the use of appropriate cushioning materials to provide optimal protection during transportation.

Packaging: Carton, Wooden box, Paper barrel, Iron barrel, or Customized.

Structure of Optical Fiber

Core

• Position: Located at the center of the optical fiber.
• Material: High-purity SiO₂, doped with trace amounts of GeO₂ or P₂O₅ to increase the refractive index (n₁), enabling light signal transmission.

Cladding

• Position: Surrounds the core.
• Material: High-purity SiO₂, with trace dopants such as B₂O₃ used to slightly lower the refractive index (n₂) so that it is slightly less than that of the core. This ensures that the light signal remains confined within the core for transmission.

Coating Layer

• Position: The outermost layer of the optical fiber.
• Structure and Material: Includes a primary coating, a buffer layer, and a secondary coating.

a) The primary coating is typically made of acrylate, silicone, or silicone rubber.

b) The buffer layer generally consists of a high-performance filling gel (for water resistance).

c) The secondary coating is usually composed of high polymers such as polypropylene or nylon.

• Function: To protect the optical fiber from moisture and mechanical abrasion, while also enhancing its mechanical strength and flexibility. This extends the service life of the fiber.

Customization Options

We offer tailored core sizes, numerical apertures, coatings, and connector types to meet your specific system requirements. Custom-designed fiber-optic devices based on square core fibers are available upon request. Samples are for testing only.