High Power Fiber Cables
Typically, fiber patch cables with connectors like SMA are limited to tolerating approximately 1 W of power. When several hundred milliwatts of power leaks, it can cause the epoxy inside the ferrule to liquefy and cover the end face, resulting in attenuation, localized heating, and rapid power degradation. In contrast, high-power fiber cables are specifically designed for high-power applications. They incorporate air gap ferrule technology, which eliminates energy-absorbing materials around the fiber end faces. Additionally, both ends of the cables are coated with an anti-reflection coating in the 400-700 nm range. The coating has a damage threshold exceeding 1 MW/cm2, although this threshold may vary depending on launch conditions and operating wavelength.
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