In this paper, Raman induced polarization dependent gain (PDG) in orthogonally pumped optical parametric amplifiers is investigated. Based on the Manakov Eqs., complete coupled Eqs. are derived and numerically solved. Analytical approximate solutions are derived. The simulation results show that in orthogonally pumped optical parametric amplifiers, the Raman effect between the pump and the signal contributes more prominently to the PDG than that induced by asymmetrical pump depletion.
© 2006 Optical Society of America
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