Fernandes, Gil M.Almeida, Alvaro J.Niehus, ManfredPinto, Armando Nolasco2013-10-252013-10-252013-01-15FERNANDES, Gil M.; [et al] – Theoretical analysis of multimodal four-wave mixing in optical microwires. Journal of Lightwave Technology. ISSN 0733-8724. Vol. 31, N.º 2 (2013), pp. 195-202.0733-8724http://hdl.handle.net/10400.21/2787Optical fiber microwires (OFMs) are nonlinear optical waveguides that support several spatial modes. The multimodal generalized nonlinear Schrodinger equation (MM-GNLSE) is deduced taking into account the linear and nonlinear modal coupling. A detailed theoretical description of four-wave mixing (FWM) considering the modal coupling is developed. Both, the intramode and the intermode phase-matching conditions is calculated for an optical microwire in a strong guiding regime. Finally, the FWM dynamics is studied and the amplitude evolution of the pump beams, the signal and the idler are analyzed.engMultimode four-wave mixingNonlinear coefficientOptical microwiresPhase-matchingjournal article10.1109/JLT.2012.2224320