Rugate filter sidelobe suppression using half-apodization.
Rugate filters reflectance spectra were calculated for various index profiles with half-Gaussian modulation; graded-index as well as step-index profiles were used. The results show excellent sidelobe suppression around the stopbands, relatively high optical density, and good flatness in the reflectance band.
Abu-Safia
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Al-Sharif
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Abu Aljarayesh
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