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High-density integrated optics

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6 Author(s)
Manolatou, C. ; Dept. of Electr. Eng. & Comput. Sci., MIT, Cambridge, MA, USA ; Johnson, S.G. ; Shanhui Fan ; Villeneuve, Pierre R.
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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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Lightwave Technology, Journal of  (Volume:17 ,  Issue: 9 )