High-temperature optical fiber protection with DeSolite® system
Why are high-temperature environments challenging for optical fibers?
Modern optical fibers must increasingly operate at high temperatures, but conventional single-layer, high-temperature resistant coatings struggle to balance them.
High temperatures can weaken traditional acrylate coatings, reducing fiber protection.
Comparatively, temperature-resistant polyimide coatings withstand higher heat, but sacrifice lateral pressure resistance and can be difficult to handle.
How does the DeSolite® dual-layer system merge heat resistance, signal protection, and easy handling?
The DeSolite® DP-10HT and DS-20HT combo prevents signal attenuation loss up to 200 °C, while maintaining good mechanical properties and enabling easy handling. Together, these properties remove the traditional compromise between heat resistance and ease of processing forced by single-layer solutions.
What roles are performed by DeSolite® DP-10HT and DS-20HT?
Primary layer: DeSolite® DP-10HT
DeSolite® DP-10HT is a soft, low-modulus primary coating that protects the optical fiber’s signal integrity.
Designed to remove thermally weak links while remaining flexible at elevated temperatures, this layer preserves signal transmission even when fibers are exposed to heat and mechanical stress.
Secondary layer: DeSolite® DS-20HT
DeSolite® DS-20HT is the outer layer, engineered to provide both additional thermal stabilization and mechanical protection. This layer protects against external forces while enabling good handling during field preparation. In this way, it simplifies fiber handling.
As fiber networks expand into more demanding environments, coatings must protect signal performance without compromising handling. The dual-layer system based on DeSolite® DP-10HT and DS-20HT helps customers achieve reliable high-temperature performance while supporting efficient fiber installation.
Which applications benefit most from high-temperature dual-layer coatings?
The DeSolite® dual-layer system supports the protection of optical fibers in environments where both temperature stability and signal reliability are critical.
Typical applications include:
- AI and hyperscale data centers
- Aerospace and satellites
- Automotive sensing systems
- High-power lasers
- Nuclear facilities
- Oil rigs
Why does coating expertise from Covestro matter for reliable fiber production?
Reliable fiber protection depends on both proven chemistry and deep application expertise.
With more than 45 years of optical fiber coating innovation, Covestro offers batch-to-batch consistency, dedicated technical service teams, extensive testing capabilities, and global supply capabilities to ensure consistent coating performance.
Key benefits
- Heat-resistant: Reliable fiber protection across a wide temperature range up to 200 °C
- Enhances microbending protection: Soft primary layer cushions fibers to reduce microbending sensitivity
- Signal integrity: Dual-layer design preserves signal quality under heat and mechanical stress
- Strong Tough outer layer protects fibers during handling and installation
