Ding, W. et al. (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. (doi: 10.1364/OL.37.000668)
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Publisher's 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.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Sorel, Professor Marc and De La Rue, Professor Richard and Strain, Dr Michael |
| Authors: | 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. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | Optics Letters |
| Publisher: | Optical Society of America |
| ISSN: | 0146-9592 |
| Published Online: | 14 February 2012 |
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