Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 19, Issue 17-20, Pages 1389-1391Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2007.903341
Keywords
Brilouin scattering; nonlinear acoustics; optical fiber fabrication; optical fiber measurements; optical fibers
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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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