Effective-index method and coupled-mode theory for almost-periodic waveguide gratings: a comparison.
نویسنده
چکیده
Contradirectional propagation through active, first-order, almost-periodic, corrugated waveguide gratings is analyzed by using both coupled-mode theory and a combined effective-index/impedance-matching matrix technique. For TE-mode operation, which is near the first-order Bragg wavelength, the equivalence of the two techniques is analytically demonstrated for shallow surface corrugations.
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عنوان ژورنال:
- Applied optics
دوره 31 6 شماره
صفحات -
تاریخ انتشار 1992