fa Dynamics of multi-wavelength Brillouin-Raman fiber laser assisted by multiple four-wave mixing processes in a ring cavity تخصصی Special پژوهشي Research Dynamics of a multi-wavelength Brillouin-Raman fiber laser (MBRFL) assisted by four-wave mixing has been investigated through the development of Stokes and anti-Stokes lines under different combinations of Brillouin and Raman pump power levels and different Raman pumping schemes in a ring cavity. The threshold power of a Stokes line of order higher than 3 has appeared sooner than the saturation power of the last Stokes line due to degenerate FWM processes involved in the MBRFL generation. It is interesting to note that the nth order anti-Stokes and (n+4)th order Stokes power levels increased unexpectedly almost the same before the Stokes wave reached at its threshold power. Dynamics of a multi-wavelength Brillouin-Raman fiber laser (MBRFL) assisted by four-wave mixing has been investigated through the development of Stokes and anti-Stokes lines under different combinations of Brillouin and Raman pump power levels and different Raman pumping schemes in a ring cavity. The threshold power of a Stokes line of order higher than 3 has appeared sooner than the saturation power of the last Stokes line due to degenerate FWM processes involved in the MBRFL generation. It is interesting to note that the nth order anti-Stokes and (n+4)th order Stokes power levels increased unexpectedly almost the same before the Stokes wave reached at its threshold power. Stimulated Brillouin Scattering, Fiber lasers, Nonlinear Optics Stimulated Brillouin Scattering, Fiber lasers, Nonlinear Optics 1563 1568 http://opsi.ir/browse.php?a_code=A-10-1-829&slc_lang=fa&sid=1 Mohammadreza Rezazadeh Shirazi Mohammadreza Rezazadeh Shirazi behshirazi@gmail.com 10031947532846003885 10031947532846003885 Yes Physics Department, Kerman Branch, Islamic Azad University, Kerman, Iran Physics Department, Kerman Branch, Islamic Azad University, Kerman, Iran