期刊
IEEE PHOTONICS TECHNOLOGY LETTERS
卷 19, 期 17-20, 页码 1389-1391出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2007.903341
关键词
Brilouin scattering; nonlinear acoustics; optical fiber fabrication; optical fiber measurements; optical fibers
The dependence of Brillouin frequency shift (BFS) in optical fibers on the residual elastic and inelastic strains induced by different draw tensions during fiber fabrication is investigated experimentally and theoretically. The BFS is linearly proportional to the draw tension with a measured coefficient of -42.0 MHz/100 g, which agrees with the theoretical value of -41.96 MHz/100 g. Theoretical analysis further shows that the elastic strain in fiber core influences predominantly the BFS due to the second-order nonlinearity of Young's modulus while the effect of the inelastic strain in fiber cladding is less than 1.0%.
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