Title :
Amplification of discrete vector solitons by means of polarization instability
Author :
Vicencio, Rodrigo A. ; Molina, Mario I. ; Kivshar, Yuri S.
Author_Institution :
Dept. de Fisica, Chile Univ., Santiago, Chile
Abstract :
We study the dynamics of discrete vector solitons using the standard coupled-mode theory within the slowly-varying envelope approximation, but including four-wave mixing terms. First, we find approximate analytical solutions in the form of strongly localized vectorial modes. Next, we use these modes to find a closed expression for the average power transfer between the TE and the TM modes, as a function of their initial phase difference. We suggest a novel mechanism for achieving simultaneous switching and amplification (gain from 70% to 6000%) of a weak signal (TE) by a strong pump of the other polarization (TM) by means of a judicious choice of the pump input angle and the pump power.
Keywords :
coupled mode analysis; light polarisation; multiwave mixing; optical solitons; optical waveguides; vectors; approximate analytical solution; discrete vector soliton amplification; four-wave mixing; optical waveguide; phase difference; polarization instability; power transfer; pump input angle; pump power; signal switching; slowly-varying envelope approximation; standard coupled-mode theory; strongly localized vectorial mode; Nonlinear optics; Optical arrays; Optical devices; Optical mixing; Optical solitons; Optical waveguides; Photorefractive materials; Polarization; Semiconductor waveguides; Tellurium;
Conference_Titel :
Lasers and Electro-Optics Europe, 2005. CLEO/Europe. 2005 Conference on
Print_ISBN :
0-7803-8974-3
DOI :
10.1109/CLEOE.2005.1568037
