.1060 Nm Nd-doped Phosphate Waveguide Amplifier Research And Preparation

The characteristic and applications of neodymium-doped phosphate laser glass and neodymium-doped phosphate waveguide amplifier is summarized. Based on 4 level-system equation, The rate equations for integrated neodymium-doped phosphate waveguide laser amplifier (NDWA) pumped with 802nm wavelength is analyzed using overlapping methods in this paper. The model is based on time-independent laser rate equations. The effects of neodymium-doped concentration, pump power, signal power and amplifier length are discussed relation with the gain characteristic of NDWA's. Numerical results was demonstrated, and it is possible to fabricate higher gain and super-shorter (centimeter order) NDWA's.Using ion-exchanged technique, the planar waveguides and channel waveguides were fabricated in neodymium doped phosphate glass substrate. Optimization of proportion used ion-exchangd Nd3+-doped phosphate waveguide is acquired, which AgNO3 and KNO3 is 6% :94%, and ion-exchangd time is about 40 minute. The mode refractive index at 632.8nm of planar waveguide was calculated with parameters that measured by m line technology. The curve of index profile of planar waveguide was drawn with inverse WKB method. Finally, the curve of the predicted waveguide thickness as the function of exchanged-time was obtained. The curve of the predicted waveguide thickness as the function of silver ion concentration was obtained. The curve of the predicted waveguide thickness as the function of exchanged-temperature was obtained.The basic principles of FD-BPM of the two-dimensional and three-dimensional waveguides were demonstrated. The TBC boundary conditions of FD-BPM were described. The successful simulations of the 1060nm signal and the 802nm pump were performed in the neodymium-doped phosphate glass waveguide with FD-BPM. It was important to optimize the waveguide structure.