Abstract

Waveguide Bragg grating structures with strong index corrugations are analyzed by the complex mode-matching method. As the index corrugation increases, the peak wavelength of the reflection spectrum is shifted towards shorter wavelength from the conventional Bragg condition due to the energy storage effect. It is shown that the peak wavelength corresponds to the center of the stop-band of the Floquet–Bloch mode. An efficient and reliable iterative method is proposed for design of grating structures with strong corrugations.

© 2008 IEEE

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