Title :
Correlation between dopant concentration and vibrational anharmonicity in silica-based fibers
Author :
Alexandrov, Igor V. ; Melchor, Gaston Melo ; Vinogradov, Dmitry N.
Author_Institution :
NITIOM Res. Center, S.I. Vavilov State Opt. Inst., St. Petersburg, Russia
Abstract :
The multiwavelength picosecond stimulated Raman scattering (SRS) in germania-doped silica fibers was studied in the 5-45 mole% dopant concentration range. Based on an overtone band positions the vibrational anharmonicity constants were calculated. The "harmonization" effect for the silica tetrahedron vibrations in highly Ge-doped fibers was discovered and interpreted. Some practical applications of picosecond SRS spectroscopy for microstructural glass studies were discussed.
Keywords :
anharmonic lattice modes; doping profiles; germanium compounds; high-speed optical techniques; micro-optics; optical fibres; optical glass; silicon compounds; stimulated Raman scattering; vibrational states; dopant concentration; germania-doped silica fibers; microstructural glass; multiwavelength picosecond stimulated Raman scattering spectroscopy; overtone band positions; silica tetrahedron vibrations; vibrational anharmonicity constant; Electronic mail; Fiber nonlinear optics; Glass; Optical fiber communication; Optical fiber networks; Optical scattering; Raman scattering; Silicon compounds; Spectroscopy; Ultraviolet sources;
Conference_Titel :
Lasers and Electro-Optics Europe, 2003. CLEO/Europe. 2003 Conference on
Print_ISBN :
0-7803-7734-6
DOI :
10.1109/CLEOE.2003.1313694
