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Measurement of pump induced refractive index change in Er3+ doped fiber by two-mode interferometry
Published online by Cambridge University Press: 15 July 1998
Abstract
We α present and demonstrate a method to determine the refractive index and absorption changes in a two mode fiber interferometer. Measurement on the 632 nm transitions in Er3+ silica fiber shows that refractive index and absorption changes result from ground and excited state transitions respectively. The GSA/ESA cross-sections ratio was found to be 14.
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- © EDP Sciences, 1998
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