Mapping the refractive index changes along Yb-doped fibers pumped at 976 nm based on acousto-optic interaction

E. P. Alcusa-Sáez; A. Díez; M. V. Andrés

doi:10.1117/12.2059514

2 June 2014 Mapping the refractive index changes along Yb-doped fibers pumped at 976 nm based on acousto-optic interaction

E. P. Alcusa-Sáez, A. Díez, M. V. Andrés

Author Affiliations +

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 915771 (2014) https://doi.org/10.1117/12.2059514
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

In-fiber acousto-optic interaction is used to investigate the refractive index changes generated along an Yb-doped fiber by a 976 nm pump. The transmission notch created by the acoustic-induced coupling between the core mode and a cladding mode shifts to longer wavelengths when the pump is delivered to the fiber. Thermal and electronic contributions of the refractive index change are analyzed from the wavelength shift. Additionally, the non-uniform distribution of pump absorption along the fiber length is investigated by a time-resolved acousto-optic technique.

Citation Download Citation

E. P. Alcusa-Sáez, A. Díez, and M. V. Andrés "Mapping the refractive index changes along Yb-doped fibers pumped at 976 nm based on acousto-optic interaction", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 915771 (2 June 2014); https://doi.org/10.1117/12.2059514

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