Analysis of power-dependent switching between radiatively coupled planar waveguides

Autor(en): Shamonin, M
Lohmeyer, M
Hertel, P
Stichwörter: Engineering; Engineering, Electrical & Electronic; integrated optics; NONLINEAR DIRECTIONAL COUPLER; OPTICAL WAVE-GUIDE; Optics; power-dependent switch; radiatively coupled waveguides; Telecommunications
Erscheinungsdatum: 1997
Herausgeber: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Journal: JOURNAL OF LIGHTWAVE TECHNOLOGY
Volumen: 15
Ausgabe: 6
Startseite: 983
Seitenende: 989
Zusammenfassung: 
Effective coupling between two remote optical waveguides without branching sections can be achieved in a three-guide system with multimode central waveguide, We investigate the nonlinear power switching of cw, laser radiation by such radiatively coupled waveguides, It is shown that effective all-optical switches with spatially well separated input/output channels can be realized although the influence of multimode interference on the switching characteristics becomes more pronounced for increasing thickness of the central guide. Different coupling regimes are specified, and the changes in switching characteristics during the transformation from one regime to another is studied, Numerical calculations for the critical power are compared with an approximate analytical expression, It Is also shown that, at a moderate input power, a small number of modes determines the switching behavior.
ISSN: 07338724
DOI: 10.1109/50.588671

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