Abstract

The geometrical conditions required for single-mode propagation in large cross-section silicon-on-insulator (SOI) waveguides were investigated using the beam propagation method (BPM). The cases of both vertical-walled and sloping-walled (trapezoidal) rib structures were considered. In the trapezoidal case some approximate methods were compared with the simulated results. Expressions for the single-mode condition for both types of waveguide were defined.

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Appl. Opt. (1)

J. Lightwave Technol. (3)

S. P. Pogossian, L. Vescan and A. Vonsovici, "The single-mode condition for semiconductor rib waveguides with large cross section", J. Lightwave Technol., vol. 16, pp. 1851-53, 1998.

A. G. Rickman, G. T. Reed and F. Namavar, "Silicon-on-insulator optical rib waveguide loss and mode characteristics", J. Lightwave Technol., vol. 12, pp. 1771-76, 1994.

C. K. Tang, G. T. Reed, A. J. Walton and A. G. Rickman, "Low-loss and single-mode phase modulator in SIMOX material", J. Lightwave Technol., vol. 12, pp. 1394-1400, 1994.

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