Research on absorption test methods of Yb-doped double cladding fiber

Pupu Wang; Rundong Li; Liang Rong; Wei Ji; Yankun Gao; Cong Jiang; Shaoyi Gu

doi:10.1117/12.2229724

26 January 2016 Research on absorption test methods of Yb-doped double cladding fiber

Pupu Wang, Rundong Li, Liang Rong, Wei Ji, Yankun Gao, Cong Jiang, Shaoyi Gu

Proceedings Volume 9796, Selected Papers of the Photoelectronic Technology Committee Conferences held November 2015; 97962H (2016) https://doi.org/10.1117/12.2229724
Event: Selected Proceedings of the Chinese Society for Optical Engineering Conferences held November 2015, 2015, Various, China

Abstract

Absorption coefficient is a very useful feature for active fiber. In fiber laser system, the length of active fiber is chosen according to absorption coefficient. And the length of fiber can directly influence the feature of fiber laser. Therefore, how to obtain an accurate absorption coefficient is very important. Because fiber exists re-emission in typical absorption band pumped by power. It is difficult to accurately measure absorption coefficient. The absorption coefficients of Yb-doped double cladding fiber at 975 nm measured by several methods were compared. In conclusion, for the fibers with same length pumped by white light, the absorption coefficient is the highest when cutback only once. Meanwhile, when fibers with different length were measured by the same method, the absorption coefficient is inversely proportional to optical fiber length.

Citation Download Citation

Pupu Wang, Rundong Li, Liang Rong, Wei Ji, Yankun Gao, Cong Jiang, and Shaoyi Gu "Research on absorption test methods of Yb-doped double cladding fiber", Proc. SPIE 9796, Selected Papers of the Photoelectronic Technology Committee Conferences held November 2015, 97962H (26 January 2016); https://doi.org/10.1117/12.2229724

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