A novel idea is proposed to suppress the soliton self-frequency shift of femtosecond soliton pulse in dispersion-decreasing fibers.The expression of the soliton self-frequency shift as a function of the pulse width an...A novel idea is proposed to suppress the soliton self-frequency shift of femtosecond soliton pulse in dispersion-decreasing fibers.The expression of the soliton self-frequency shift as a function of the pulse width and the fiber dispersion parameter is derived.The numerical simulation is also given,and is in agreement with analytical results.展开更多
A new method is proposed to compress soliton pulses in the normal dispersive optical fibers through cross-phase-modulation of two pulses.The optimum fiber length for optimum compression is obtained for given values of...A new method is proposed to compress soliton pulses in the normal dispersive optical fibers through cross-phase-modulation of two pulses.The optimum fiber length for optimum compression is obtained for given values of the pulses and fiber parameters.展开更多
Timefluorescence decays were first performed on hematoporphyrin derivative laser No.3 in buffer at different micelles concentration.The flu.orescence lifetime constants,measured with a time-correlated single photon co...Timefluorescence decays were first performed on hematoporphyrin derivative laser No.3 in buffer at different micelles concentration.The flu.orescence lifetime constants,measured with a time-correlated single photon counting system;could be fitted by two or three exponential components with different relative peak amplitudes depending on the observation wavelength^thus indicating the presence of different emitting molecular species and/or of molecular species in different aggregational states.展开更多
Based on the constant coefficients of Ginzburg-Landau equation that considers the influence of the doped fiber retarded time on the evolution of self-similar pulse,the parabolic asymptotic self-similar solutions were ...Based on the constant coefficients of Ginzburg-Landau equation that considers the influence of the doped fiber retarded time on the evolution of self-similar pulse,the parabolic asymptotic self-similar solutions were obtained by the symmetry reduc-tion algorithm. The parabolic asymptotic amplitude function,phase function,strict linear chirp function and the effective temporal pulse width of self-similar pulse are given in this paper. And these theoretical results are consistent with the numerical simulations.展开更多
文摘A novel idea is proposed to suppress the soliton self-frequency shift of femtosecond soliton pulse in dispersion-decreasing fibers.The expression of the soliton self-frequency shift as a function of the pulse width and the fiber dispersion parameter is derived.The numerical simulation is also given,and is in agreement with analytical results.
基金Supported by the National Post-doctoral Science Foundation of China,and Post-doctoral Science Foundation of Guangdong.
文摘A new method is proposed to compress soliton pulses in the normal dispersive optical fibers through cross-phase-modulation of two pulses.The optimum fiber length for optimum compression is obtained for given values of the pulses and fiber parameters.
文摘Timefluorescence decays were first performed on hematoporphyrin derivative laser No.3 in buffer at different micelles concentration.The flu.orescence lifetime constants,measured with a time-correlated single photon counting system;could be fitted by two or three exponential components with different relative peak amplitudes depending on the observation wavelength^thus indicating the presence of different emitting molecular species and/or of molecular species in different aggregational states.
基金the Natural Science Foundation of Guangdong Province of China (Grant No. 04010397)
文摘Based on the constant coefficients of Ginzburg-Landau equation that considers the influence of the doped fiber retarded time on the evolution of self-similar pulse,the parabolic asymptotic self-similar solutions were obtained by the symmetry reduc-tion algorithm. The parabolic asymptotic amplitude function,phase function,strict linear chirp function and the effective temporal pulse width of self-similar pulse are given in this paper. And these theoretical results are consistent with the numerical simulations.
