Photonic crystal waveguides for coarse-selectivity devices |
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Authors: | M. Ayre C. Cambournac O. Khayam H. Benisty T. Stomeo T.F. Krauss |
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Affiliation: | aLaboratoire Charles Fabry de l’Institut d’Optique, CNRS, Univ Paris-Sud, Campus Polytechnique, RD 128, F-91127 Palaiseau, France;bSchool of Physics & Astronomy, University of St. Andrews, St. Andrews KY16 9SS, UK |
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Abstract: | We discuss devices based on photonic crystal planar waveguides for use as wavelength-selective applications via the mini-stopband extraction mechanism. We present experimental data for the core of a compact demux system. We show that spatial and spectral behaviours are as intended from coupled-mode theory, as well as from the finite-difference time-domain approach. Finally, we propose architectures with large crosstalk and some inherent fabrication-related advantages achieved by duplicating the basic multimode waveguide and using it as a spectral filter. |
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Keywords: | Photonic crystals Demultiplexing Multimode waveguide |
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