• Rafailov, Edik U.
• Dianov, Evgueni M.
• Yadav, Amit
• Chichkov, Nikolay B.
• Melkumov, Mikhail A.
• Gumenyuk, Regina
• Zherebtsov, Evgeny
• Yashkov, Mikhail V.

Abstract

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.

Topics

• impedance spectroscopy
• chemical vapor deposition