In-fiber temperature measurement during optical pumping of Yb-doped laser fibers

Julia Fiebrandt; Martin Leich; Manfred Rothhardt; Hartmut Bartelt

doi:10.1117/12.922334

25 April 2012 In-fiber temperature measurement during optical pumping of Yb-doped laser fibers

Julia Fiebrandt, Martin Leich, Manfred Rothhardt, Hartmut Bartelt

Proceedings Volume 8426, Microstructured and Specialty Optical Fibres; 84260B (2012) https://doi.org/10.1117/12.922334
Event: SPIE Photonics Europe, 2012, Brussels, Belgium

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.

Citation Download Citation

Julia Fiebrandt, Martin Leich, Manfred Rothhardt, and Hartmut Bartelt "In-fiber temperature measurement during optical pumping of Yb-doped laser fibers", Proc. SPIE 8426, Microstructured and Specialty Optical Fibres, 84260B (25 April 2012); https://doi.org/10.1117/12.922334

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