The fabrication of Cr-doped fibers (CDFs) using fiber drawing-tower combined with non-silica powder-in-tube (PIT) technique to achieve the active application of chromium ions in fiber is demonstrated for the first time. The fluorescence enhancement, transmission loss, and fewmode operation are disussed in the paper. The success in fabrication of CDFs with PIT method may open the possibility for utilizing CDFs as broadband fiber light source.
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