The Raman spectra of phosphosilicate core (P<sub>2</sub>O<sub>5</sub>–SiO<sub>2</sub>) fibers were investigated. Significant changes in the spectra were observed after UV irradiation of the fibers. An interpretation of the photostructural changes confirmed by computer simulation of phosphorus-related centers is proposed.
© 1998 Optical Society of America
V. G. Plotnichenko, V. O. Sokolov, V. V. Koltashev, V. B. Sulimov, and E. M. Dianov, "UV-irradiation-induced structural transformation in phosphosilicate glass fiber," Opt. Lett. 23, 1447-1449 (1998)