Title :
Soliton switching in triangular three-core nonlinear directional fiber coupler
Author :
da Silva, M.G. ; Teles, A.F. ; Sombra, A.S.B.
Author_Institution :
Dept. de Engenharia Eletrica, Univ. Fed. do Ceara, Fortaleza, Brazil
Abstract :
We present an analytical investigation of the propagation and the switching of fundamental solitons in a triangular three-core nonlinear fiber coupler with a variational method using the Lagrangian density formulation. The analytical solutions were directly obtained from the coupled nonlinear Schrodinger equations. The transmission characteristics of first-order solitons obtained by the analytical procedure agree well with the results from numerical analysis. Taking into account the length of the coupler and the critical power a comparative study between this geometry and planar geometries were done. The triangular geometry has a shorter device length compared with planar geometries
Keywords :
Schrodinger equation; light propagation; optical directional couplers; optical fibre couplers; optical solitons; optical switches; variational techniques; Lagrangian density formulation; coupled nonlinear Schrodinger equations; device length; nonlinear fiber coupler; planar geometries; propagation; soliton switching; three-core nonlinear fiber coupler; transmission characteristics; triangular geometry; variational method; Fiber nonlinear optics; Nonlinear equations; Nonlinear optics; Optical coupling; Optical fiber couplers; Optical refraction; Optical sensors; Optical solitons; Optical variables control; Ultrafast optics;
Conference_Titel :
Telecommunications Symposium, 1998. ITS '98 Proceedings. SBT/IEEE International
Conference_Location :
Sao Paulo
Print_ISBN :
0-7803-5030-8
DOI :
10.1109/ITS.1998.718463
