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Proceedings Paper

Structural peculiarities of phosphate glasses for fiber optic applications
Author(s): Anatolii Anan'ev; Viktor Bogdanov; Leonid Maksimov; Vyacheslav Rusan; Sergei Smerdin; Oleg Yanush
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Paper Abstract

Alkali phosphate, phosphate-silicate, and phosphate-germanate glasses were studied by means of high-temperature acoustics and Rayleigh-Mandelstam-Brillouin (RMBS) and Raman scattering (RS) spectroscopies. Temperature-temporal dependences of the ultrasound velocity in the glass melts were measured at temperatures up to 1550°C. From the RMBS spectra the Landau-Placzek ratio and frequency shifts were found. A theory of the fluctuations fieezing at the cooling of the glass melt was applied to separate the contributions of the frozen-in density and concentration fluctuations to the Rayleigh scattering losses. A comparison was drawn with the losses in silica glass. The RS spectra allowed the identification of the constant-stoichiometry groups. The feasibility of the system xNa2O-(40 - x)K20-30Al203-30P205 for the fabrication of low-scattering glasses was ascertained.

Paper Details

Date Published: 12 June 2006
PDF: 9 pages
Proc. SPIE 5946, Optical Materials and Applications, 594602 (12 June 2006); doi: 10.1117/12.639054
Show Author Affiliations
Anatolii Anan'ev, State Optical Institute (Russia)
Viktor Bogdanov, St. Petersburg State Univ. (Russia)
Leonid Maksimov, State Optical Institute (Russia)
Vyacheslav Rusan, State Optical Institute (Russia)
Sergei Smerdin, Railway Engineering Univ. (Russia)
Oleg Yanush, St. Petersburg State Technological Univ. of Plant Polymers (Russia)

Published in SPIE Proceedings Vol. 5946:
Optical Materials and Applications
Arnold Rosental, Editor(s)

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