Synthesis of ideal window filter response in grating-assisted couplers
- 15 May 1996
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 21 (10) , 725-727
- https://doi.org/10.1364/ol.21.000725
Abstract
Synthesizing ideal windowlike spectral response in codirectional grating-assisted couplers is considered. The method of variational optimization is used to design couplers theoretically with near 100% power transfer efficiency over the passband width and with sidelobes suppressed to −40 dB. The physical role of the π-phase-reversal sections for passband flattening is explained.Keywords
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