Title :
Evaluation of parasitic upconversion mechanisms in Er3+-doped silica-glass fibers by analysis of fluorescence at 980 nm
Author :
Nilsson, J. ; Blixt, P. ; Jaskorzynska, B. ; Babonas, J.
Author_Institution :
Dept. of Phys. II, R. Inst. of Technol., Stockholm, Sweden
fDate :
3/1/1995 12:00:00 AM
Abstract :
The behavior of modulated and unmodulated upconversion fluorescence in Er3+-doped silica-glass optical fibers pumped at 1480 nm has been experimentally and theoretically investigated. It is found to be consistent with a model where the upconversion fluorescence is generated by homogeneous and inhomogeneous energy-transfer upconversion. Model calculations indicate an upper limit of a homogeneous upconversion coefficient of 10-23 m3/s in fiber, and a negligible cross-section for excited-state absorption at 1480 mn
Keywords :
erbium; excited states; fibre lasers; fluorescence; infrared spectra; infrared spectroscopy; optical fibre testing; optical modulation; optical pumping; 1480 nm; 980 nm; Er-doped fiber amplifers; Er3+-doped silica-glass fibers; Er3+-doped silica-glass optical fibers; excited-state absorption; fluorescence; homogeneous energy-transfer upconversion; homogeneous upconversion coefficient; inhomogeneous energy-transfer upconversion; modulated upconversion fluorescence; negligible cross-section; optical pumping; parasitic upconversion mechanisms; unmodulated upconversion fluorescence; Absorption; Energy exchange; Erbium; Fabrication; Fluorescence; Metastasis; Optical amplifiers; Optical pumping; Physics; Steady-state;
Journal_Title :
Lightwave Technology, Journal of
