The fabrication and performance of CeDFs using drawing tower and powder-in-tube technique are reported. The fluorescence spectrum of CeDFs exhibited a 160-nm near-Gaussian broadband emission with 41.4-dB SNR and 1.47-μm axial resolution, which was better than any other light sources to achieve axial resolution. These novel CeDFs may be functioned as a high-resolution source for use in fiber optical coherence tomography applications.

© 2015 Optical Society of America

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