Title :
Simultaneous measurements of lifetime, gain and emission cross section in a neodymium-doped fiber
Author :
Dussardier, Bernard ; Monnom, Gérard ; Maurice, Eric ; Saïssy, André ; Ostrowsky, D.B.
Author_Institution :
Nice Univ., France
fDate :
4/1/1993 12:00:00 AM
Abstract :
A method for measuring the gain and the emission cross section of the four-level neodymium system in doped waveguides is presented. The method is based on a temporal analysis of the fluorescence decay occurring when the pump is switched off, after establishing a steady-state with high levels of absorbed power. For the case of doped fibers, results obtained using this method are compared with the usual low signal amplification technique, using a launched signal in the fiber, and the agreement is good. It is shown that the technique allows a rapid, simple method of determining low signal gain.<>
Keywords :
fibre lasers; fluorescence; luminescence of inorganic solids; neodymium; optical fibres; stimulated emission; SiO/sub 2/-GeO/sub 2/-P/sub 2/O/sub 5/:Nd; absorbed power; doped waveguides; emission cross section; fluorescence decay; fluorescence lifetime; four-level neodymium system; low signal gain; optical fibre gain; steady-state; stimulated emission; temporal analysis; Fluorescence; Gain measurement; Metastasis; Mirrors; Neodymium; Optical fiber amplifiers; Optical waveguides; Spontaneous emission; Steady-state; Wavelength measurement;
Journal_Title :
Photonics Technology Letters, IEEE
