50-125-155um High-Temperature Gold-Coated Graded-Index Multimode Fiber

The high-temperature gold-coated graded-index multimode fiber is manufactured using high-purity germanium-doped silica core, pure silica cladding, and a 24-karat gold coating. It is specifically designed for high-temperature, high-vacuum, high-power laser, and harsh industrial environments. The metallic coating offers excellent high-temperature resistance, electrical conductivity, and hermetic sealing capability, allowing direct soldering to vacuum feedthroughs and optoelectronic devices. It maintains stable optical and mechanical performance even under extreme conditions, making it widely used in aerospace, high-temperature sensing, semiconductor manufacturing, laser transmission, and nuclear industry applications.