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Modulational instability in a silicon-on-insulator directional coupler: Role of the coupling-induced group velocity dispersion


Reference:

Ding, W., Staines, O. K., Hobbs, G. D., Gorbach, A. V., De Nobriga, C., Wadsworth, W. J., Knight, J. C., Skryabin, D. V., Strain, M. J., Sorel, M. and De La Rue, R. M., 2012. Modulational instability in a silicon-on-insulator directional coupler: Role of the coupling-induced group velocity dispersion. Optics Letters, 37 (4), pp. 668-670.

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    Official URL:

    http://dx.doi.org/10.1364/ol.37.000668

    Abstract

    We report frequency conversion experiments in silicon-on-insulator (SOI) directional couplers. We demonstrate that the evanescent coupling between two subwavelength SOI waveguides is strongly dispersive and significantly modifies modulational instability (MI) spectra through the coupling induced group velocity dispersion (GVD). As the separation between two 380-nm-wide silicon photonic wires decreases, the increasing dispersion of the coupling makes the GVD in the symmetric supermode more normal and suppresses the bandwidth of the MI gain observed for larger separations.

    Details

    Item Type Articles
    CreatorsDing, W., Staines, O. K., Hobbs, G. D., Gorbach, A. V., De Nobriga, C., Wadsworth, W. J., Knight, J. C., Skryabin, D. V., Strain, M. J., Sorel, M. and De La Rue, R. M.
    DOI10.1364/ol.37.000668
    DepartmentsFaculty of Science > Physics
    Research CentresCentre for Photonics and Photonic Materials
    Publisher StatementDing_Optics_Letters_2012_37_4_668.pdf: This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OL.37.000668 Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
    RefereedYes
    StatusPublished
    ID Code29112

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