Fibercloud's carbon-coated fiber is a specialty optical fiber designed and developed for use in complex and harsh environments. A dense carbon coating is deposited on the fiber's cladding, effectively preventing moisture and hydrogen from damaging its mechanical and optical properties, thereby significantly extending its service life and mechanical reliability. This fiber is widely used in submarine cables, ocean exploration, and oil exploration.

• Enhanced photosensitivity
• Gratings can be written without the need for hydrogen carriers