Supermode dispersion and waveguide-to-slot mode transition in arrays of silicon-on-insulator waveguides

Charles E De Nobriga, Gareth D Hobbs, William J Wadsworth, Jonathan C Knight, Dmitry V Skryabin, A Samarelli, M Sorel, R M De La Rue

Research output: Contribution to journalArticle

9 Citations (Scopus)
139 Downloads (Pure)

Abstract

In this Letter, we report group index measurements of the supermodes of an array of two strongly coupled silicon-on-insulator waveguides. We observe coupling-induced dispersion that is greater than the material and waveguide dispersion of the individual waveguides. We demonstrate that the system transforms from supporting the two supermodes associated with two coupled waveguides to the single mode of a slot waveguide within the investigated spectral range. During the cutoff of the antisymmetric supermode, an anti-crossing between the symmetric TM and antisymmetric TE supermodes has been observed.
Original languageEnglish
Pages (from-to)3925-3927
Number of pages3
JournalOptics Letters
Volume35
Issue number23
DOIs
Publication statusPublished - 2010

Fingerprint Dive into the research topics of 'Supermode dispersion and waveguide-to-slot mode transition in arrays of silicon-on-insulator waveguides'. Together they form a unique fingerprint.

  • Projects

  • Cite this