نوع مقاله : مقاله پژوهشی
نویسندگان
چکیده
کلیدواژهها
عنوان مقاله [English]
In this paper, a /2-phase shifted distributed feedback Raman fiber (DFB-RF) laser above threshold condition is
analyzed theoretically. The cross phase modulation (XPM) and self phase modulation (SPM) nonlinear effects are
considered in the presented model. Numerical results show that the XPM and SPM increase the output power of DFB-
Raman fiber laser. Variation of wavelength of structure for different values of pump power has been evaluated in the
presence and absence of nonlinear effects. It is found that in the absence of nonlinear effects wavelength of laser is
constant. However, in the presence of nonlinear effects a red shift about 5×10-2nm with increasing pump power is
observed. Simulation is performed by using transfer matrix method to solve three coupled nonlinear wave equations
which describe the propagation of pump, forward and backward Stokes waves. The transfer matrix used for DFB
Raman fiber laser, is introduced for the first time in this paper.
کلیدواژهها [English]
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