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Proceedings Paper

In-fiber temperature measurement during optical pumping of Yb-doped laser fibers
Author(s): Julia Fiebrandt; Martin Leich; Manfred Rothhardt; Hartmut Bartelt
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Paper Abstract

We report on the inscription of FBGs in rare earth doped optical fibers, the reduction of inherent absorption effects in the FBGs and the FBG-based temperature measurement within the core of actively doped fiber samples during core pumping. Besides a temperature increase due to the quantum defect of Yb-ions a change in temperature during pumping was observed and fits qualitatively well to the parallel measured photodarkening evolution.

Paper Details

Date Published: 25 April 2012
PDF: 8 pages
Proc. SPIE 8426, Microstructured and Specialty Optical Fibres, 84260B (25 April 2012); doi: 10.1117/12.922334
Show Author Affiliations
Julia Fiebrandt, Institute of Photonic Technology (Germany)
Martin Leich, Institute of Photonic Technology (Germany)
Manfred Rothhardt, Institute of Photonic Technology (Germany)
Hartmut Bartelt, Institute of Photonic Technology (Germany)

Published in SPIE Proceedings Vol. 8426:
Microstructured and Specialty Optical Fibres
Kyriacos Kalli; Alexis Mendez, Editor(s)

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