Title :
Modeling, characterization, and experimental/numerical comparison of signal and fluorescence amplification in Ti,Er:LiNbO3 waveguides
Author :
Lázaro, J.A. ; Rebolledo, M.A. ; Vallés, J.A.
Author_Institution :
Alcatel SEL, Stuttgart, Germany
fDate :
11/1/2001 12:00:00 AM
Abstract :
A complete model for signal and fluorescence amplification in Ti,Er:LiNbO3 waveguides under 1480 and 980 nm excitation, which includes transitions involving high energy levels, is presented. Most of the waveguide parameters that the model requires have been determined or checked in situ. In order to numerically solve the proposed model, the overlapping factors method has been adapted to these waveguides and improved, obtaining a large computing time reduction with sufficiently accurate results. Finally, results from signal gain and ASE spectral measurements and numerical simulations have been compared. The remarkable agreement confirms both the model assumptions and the used characterization techniques. Moreover, the unusually short computing time which is consumed makes the model suitable for design and optimization processes
Keywords :
erbium; fluorescence; laser theory; laser transitions; optical design techniques; optical waveguide theory; optimisation; solid lasers; stimulated emission; superradiance; titanium; waveguide lasers; 1480 nm; 980 nm; ASE spectral measurements; LiNbO3:Ti,Er; Ti,Er:LiNbO3 waveguide laser amplifiers; fluorescence amplification; high energy levels; large computing time reduction; optimization processes; overlapping factors method; signal gain; waveguide parameters; Energy states; Erbium; Fiber nonlinear optics; Fluorescence; Gain measurement; Nonlinear optics; Optical pumping; Optical waveguides; Stimulated emission; Waveguide transitions;
Journal_Title :
Quantum Electronics, IEEE Journal of
