Abstract

This paper presents two-dimensional (2-D) finite difference time domain (FDTD) simulations of low-loss right-angle waveguide bends, T-junctions and crossings, based on high index-contrast waveguides. Such structures are essential for the dense integration of optical components. Excellent performance characteristics are obtained by designing the waveguide intersection regions as low-Q resonant cavities with certain symmetries and small radiation loss. A simple analysis, based on coupled mode theory in time, is used to explain the operation principles and agrees qualitatively with the numerical results.

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References

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  1. M. G. Daly, P. E. Jessop, and D. Yevick, "Crosstalk reduction in intersecting rib waveguides," J. Lightwave Technol., vol. 14, pp. 1695-1698, July 1996.

J. Lightwave Technol. (1)

M. G. Daly, P. E. Jessop, and D. Yevick, "Crosstalk reduction in intersecting rib waveguides," J. Lightwave Technol., vol. 14, pp. 1695-1698, July 1996.

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