The buffer coating, also known as the primary coating, is a protective layer applied on the cladding, typically made of plastic material. This coating provides mechanical protection to the optical fiber, insulates it from environmental factors, and also offers some degree of. For a standard-size fiber with a 125-µm cladding diameter and a 250-µm coating diameter, 75% of the fiber's three-dimensional volume is the polymer coating. Coatings play a key role in helping the fiber. Market leader Covestro uses unique technical capabilities to identify solutions and deliver high performance fiber coatings for the world's telecommunications market. Our innovative solutions are built on 40 years of technical experience, research and development and close partnerships that enable. The coating is a non-glass layer (s) applied to the optical fiber with the objective of offering mechanical protection to the glass. The coating protects the glass fiber from mechanical and environmental stresses in application. All desired wavelengths, such as, for example, 532 nm, 808 nm, 980 nm, 1064 nm, 1310 nm, 1480 nm, and 1550 nm can be implemented.
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