We study the interaction of a mode propagating in a planar waveguide with a three–dimensional rectangular defect (protrusion or notch) in the structure. The scattering by the defect disturbes the propagation of the mode and light is coupled out of the waveguide. To investigate these phenomena we compute electric field distributions with the Green’s tensor technique and show movies with varying defect geometries and different mode polarizations. These calculations should be useful for optimizing specific elements in complex photonic circuits.

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1. R.G. Hunsperger, Integrated Optics: Theory and Technology, 3rd ed. (Springer, Berlin, 1991).
2. T. Tamir and S. T. Peng, "Analysis and Design of Grating Couplers," Appl. Phys. 14, 235-254 (1977). [CrossRef]
3. M. Paulus, P. Gay-Balmaz, and O. J. F. Martin, "Accurate and efficient computation of the Green's tensor for stratified media," Phys. Rev. E 62, 5797-5807 (2000). [CrossRef]
4. M. Paulus and O. J. F. Martin, "Light propagation and scattering in stratified media: A Green's tensor approach," J. Opt. Soc. Am. A 18, 854-861 (2001). [CrossRef]
5. D. Marcuse, Light transmission optics, 2nd ed. (Krieger, Malabar, 1989).
6. M. Born and E. Wolf, Principles of Optics, 6th. ed. (Pergamon Press, Oxford, 1987).

Other

• R.G. Hunsperger, Integrated Optics: Theory and Technology, 3rd ed. (Springer, Berlin, 1991).
• T. Tamir and S. T. Peng, "Analysis and Design of Grating Couplers," Appl. Phys. 14, 235-254 (1977). [CrossRef]
• M. Paulus, P. Gay-Balmaz, and O. J. F. Martin, "Accurate and efficient computation of the Green's tensor for stratified media," Phys. Rev. E 62, 5797-5807 (2000). [CrossRef]
• M. Paulus and O. J. F. Martin, "Light propagation and scattering in stratified media: A Green's tensor approach," J. Opt. Soc. Am. A 18, 854-861 (2001). [CrossRef]
• D. Marcuse, Light transmission optics, 2nd ed. (Krieger, Malabar, 1989).
• M. Born and E. Wolf, Principles of Optics, 6th. ed. (Pergamon Press, Oxford, 1987).

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