1. Super-high-strength metal-coated low-hydroxy low-chlorine all-silica optical fibers
- Author
-
Bogatyrjov, V.A., Cheremisin, I.I., Dianov, E.M., Golant, K.M., and Tomashuk, A.L.
- Subjects
Fiber optics -- Research ,Business ,Electronics ,Electronics and electrical industries - Abstract
High-purity KS-4V synthetic silica developed in the Silicate Chemistry Institute of the Russian Academy of Sciences is tested as the core material for radiation hardened optical fibers. Pure-silica-core fluorine-doped-silica-cladding optical fibers with polymer (acrylate) or metal (aluminum) coating are produced as the experimental samples. The light-reflecting fluorine-doped silica cladding is synthesized by the plasma outside deposition process. The aluminum coating technology used provides a very high strength of the fibers, unattainable for polymer coatings, and expands the fiber operating range up to 400 [degrees] C. It is established that the metal coating application can result in the annealing of the drawing-induced color centers with an absorption peak at 630 nm. Post-[Gamma]-irradiation loss spectra in KS-4V-based fibers measured in 1-2 hours after 2 MGy irradiation at a dose rate of 8.3 Gy/s in the spectral range 350-700 nm are discussed. The 630 nm absorption peak is practically absent from the post-irradiation loss spectra of aluminum-coated KS-4V-based fibers.
- Published
- 1996