Eur. Phys. J. AP
Volume 3, Number 1, July 1998
|Page(s)||5 - 8|
|Published online||15 July 1998|
Measurement of pump induced refractive index change in Er3+ doped fiber by two-mode interferometry
Laboratoire de Physique de la Matière
Condensée (CNRS-UMR 6622), Université
de Nice-Sophia Antipolis, Parc Valrose,
06108 Nice Cedex, France
Corresponding author: email@example.com
Revised: 15 April 1998
Accepted: 30 April 1998
Published online: 15 July 1998
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.
PACS: 42.81.-i – Fiber optics / 07.60.Ly – Interferometers
© EDP Sciences, 1998
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