Title :
Guided modes of nonlinear slot waveguides
Author :
Fujisawa, T. ; Koshiba, M.
Author_Institution :
Div. of Media & Network Technol., Hokkaido Univ., Sapporo, Japan
fDate :
7/1/2006 12:00:00 AM
Abstract :
Guided modes of nonlinear slot waveguides are investigated for the first time and their unusual modal properties are demonstrated. Nonlinear phase shifts of slot waveguides induced by optical Kerr effect exhibit saturable behavior for strong optical intensity. This is because a self-localization effect of electromagnetic fields induced by optical Kerr effect is compensated with a field broadening originating from a unique confinement mechanism of slot waveguides. Nonlinear phase shifts on various structural parameters are thoroughly investigated. All the results presented in this letter are obtained by using a rigorous full-vector finite-element method to ensure accurate analysis.
Keywords :
finite element analysis; optical Kerr effect; optical saturation; optical waveguide theory; finite-element method; guided modes; nonlinear phase shifts; nonlinear slot waveguides; optical Kerr effect; optical saturation; self-localization effect; Electromagnetic waveguides; Kerr effect; Nonlinear optical devices; Nonlinear optics; Optical interferometry; Optical refraction; Optical signal processing; Optical variables control; Optical waveguides; Ultrafast optics; Finite-element method (FEM); nonlinear optical waveguide; optical Kerr effect; slot waveguide;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.877593
