期刊
OPTICS EXPRESS
卷 18, 期 18, 页码 18852-18865出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.18.018852
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- Joint Technology Office (JTO) through their High Energy Laser Multidisciplinary Research Initiative (HEL-MRI) [F014252]
Boron co-doped germanosilicate fibers are investigated via the Brillouin light scattering technique using two wavelengths, 1534nm and 1064nm. Several fibers are investigated, including four drawn from the same preform but at different draw temperatures. The Stokes' shifts and the Brillouin spectral widths are found to increase with increasing fiber draw temperature. A frequency-squared law has adequately described the wavelength dependence of the Brillouin spectral width of conventional Ge-doped fibers. However, it is found that unlike conventional Ge-doped fibers these fibers do not follow the frequency-squared law. This is explained through a frequency-dependent dynamic viscosity that modifies this law. (C) 2010 Optical Society of America
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