A pure Ce-doped silica fiber is fabricated using modified chemical vapor deposition (MCVD) technique. Fluorescence characteristics of a Ce-doped silica fiber are experimentally investigated with continuous wave pumping from 440 nm to 405 nm. Best pump absorption and broad fluorescence spectrum is observed for ~ 405 nm laser. Next, the detailed analysis of spectral response as a function of pump power and fiber length is performed. It is observed that a -10dB spectral width of ~ 280 mn can be easily achieved with different combinations of the fiber length and pump power. Lastly, we present, for the first time to the best of our knowledge, a broadband fluorescence spectrum with -10dB spectral width of 301 nm, spanning from ~ 517.36 nm to ~ 818 nm, from such fibers with non-UV pump lasers.

© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

Amit Yadav, Nikolay B. Chichkov, Regina Gumenyuk, Evgeny Zherebtsov, Mikhail A. Melkumov, Mikhail V. Yashkov, Evgeny M. Dianov, and Edik U. Rafailov, "405-nm pumped Ce3+-doped silica fiber for broadband fluorescence from cyan to red," Proc. SPIE 10914, Optical Components and Materials XVI, 1091406 (Presented at SPIE OPTO: February 04, 2019; Published: 27 February 2019); https://doi.org/10.1117/12.2509599.