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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.
Original language | English |
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Pages (from-to) | 668-670 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 37 |
Issue number | 4 |
DOIs | |
Publication status | Published - 15 Feb 2012 |
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Dive into the research topics of 'Modulational instability in a silicon-on-insulator directional coupler: Role of the coupling-induced group velocity dispersion'. Together they form a unique fingerprint.Projects
- 1 Finished
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Nonlinear Photonics in Silicon-on-Insulator Nanostructures
Skryabin, D. (PI), Knight, J. (CoI) & Wadsworth, W. (CoI)
Engineering and Physical Sciences Research Council
1/09/09 → 28/02/13
Project: Research council