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Er-yb Co-doped Phosphate Waveguide Lasers Numerical Analysis And Optimization Of The Waveguide Production

Posted on:2007-04-14Degree:MasterType:Thesis
Country:ChinaCandidate:Z B XingFull Text:PDF
GTID:2208360185456479Subject:Optical Engineering
Abstract/Summary:PDF Full Text Request
The general development, characteristics and applications of Er3+/Yb3+ co-doped phosphate glass waveguide laser were summarized. The characteristics of Er3+/Yb3+ co-doped phosphate glass were introduced. Meanwhile, main methods of fabricating optical waveguide were presented briefly.Several factors in influencing the capabilities of Er3+/Yb3+ co-doped phosphate glass waveguide laser were introduced. Ignored the amplified spontaneous emission (ASE) and ESA, rate equations and propagations equations for continuous wave Er3+/Yb3+ co-doped phosphate glass waveguide laser were calculated using Runge-Kutta algorithm. Propagation characteristics of signal and pump light in the waveguide were analyzed too. Effects of different ratios of Er3+ to Yb3+ concentration, reflectivity and waveguide length were studied. Experiment results demonstrate the optimal length and reflectivity of waveguide laser were obtained at a given ratio of Er3+ to Yb3+ concentration and the output pump power. Note that the optimized design of fabricating waveguide laser was obtained.The basic principles of FD-BPM of the tow-dimensional and three-dimensional waveguides were demonstrated. The TBC boundary conditions of FD-BPM were described. The successful simulations of the 1.54-μm signal and the 0.98-μm pump were performed in the Er3+-Yb3+ co-doped phosphate glass waveguide with FD-BPM. The curly waveguide was simulated with FD-BPM too. It was important to optimize the waveguide structure and S waveguide laser.A new equipment which could be used in field-assisted ion exchange process was designed and the blueprints of the equipment were drawn. Feasibly experimental projects of fabricating buried waveguides by field-assisted ion-exchanged technology using this equipment were designed. Used thermal ion-exchange and the silver film ion-exchange technology, the planar and channel waveguides were fabricated. The mode refractive index of the 632.8-nm wavelength laser in the ion-exchange planar waveguide was calculated by m line technology. The curve of index profile of planar waveguide was drawn by WKB method. The near field figure of channel waveguide at...
Keywords/Search Tags:Er3+/Yb3+co-doped phosphate glass, optical waveguide laser, FD-BPM, ion-exchange, planar waveguide, channel waveguide
PDF Full Text Request
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