Title :
Theoretical Analysis of Multimodal Four-Wave Mixing in Optical Microwires
Author :
Fernandes, Gil M. ; Almeida, Álvaro J. ; Niehus, Manfred ; Pinto, Armando Nolasco
Author_Institution :
Inst. de Telecomun., Univ. of Aveiro, Aveiro, Portugal
Abstract :
Optical fiber microwires (OFMs) are nonlinear optical waveguides that support several spatial modes. The multimodal generalized nonlinear Schrödinger 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.
Keywords :
Schrodinger equation; micro-optics; multiwave mixing; optical phase matching; optical waveguides; intermode phase matching; intramode phase matching; multimodal four-wave mixing; multimodal generalized nonlinear Schrodinger equation; nonlinear modal coupling; nonlinear optical waveguides; optical microwires; Couplings; Equations; Frequency conversion; Indexes; Mathematical model; Nonlinear optics; Optical pumping; Multimode four-wave mixing; nonlinear coefficient; optical microwires; phase-matching;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2012.2224320
