FBG filter with minimal dispersion |
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Authors: | O. V. Belai D. A. Shapiro |
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Affiliation: | (1) Institute of Automation and Electrometry, Siberian Branch, Russian Academy of Sciences, Pr. Akademika Koptyuga 1, Novosibirsk, 630090, Russia |
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Abstract: | An optimal filter for super-fast fiber-optic communication lines should cause minimal phase distortions. The simplest case of Bragg grating with a symmetric profile is considered. A distortion functional is presented, which is the mean square group delay over the Bragg reflection band at a fixed integral reflectivity. The functional is minimized analytically in the simplest limiting case. Numerical calculations confirm that the optimal reflection spectrum is realizable. |
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