Disorder effects in subwavelength grating metamaterial waveguides

Download
  1. (PDF, 1 MB)
  2. Get@NRC: Disorder effects in subwavelength grating metamaterial waveguides (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1364/OE.25.012222
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleOptics Express
ISSN1094-4087
Volume25
Issue11
Pages1222212236
AbstractSubwavelength grating (SWG) waveguides are integrated photonic structures with a pitch substantially smaller than wavelength for which they are designed, so that diffraction effects are suppressed. SWG operates as an artificial metamaterial with an equivalent refractive index which depends on the geometry of the structure and the polarization of the propagating wave. SWG waveguides have been advantageously used in silicon photonics, resulting in significant performance improvements for many practical devices, including highly efficient fiber-chip couplers, waveguide crossings, broadband multimode interference (MMI) couplers, evanescent field sensors and polarization beam splitters, to name a few. Here we present a theoretical and experimental study of the influence of disorder effects in SWG waveguides. We demonstrate via electromagnetic simulations and experimental measurements that even a comparatively small jitter (~5 nm) in the position and size of the SWG segments may cause a dramatic reduction in the transmittance for wide (multimode) SWG waveguides, while for narrow (single mode) waveguides this effect is negligible. Our study shows that the impact of the jitter on SWG waveguide performance is directly related to the modal confinement.
Publication date
PublisherOptical Society of America
LanguageEnglish
AffiliationMedical Devices; National Research Council Canada
Peer reviewedYes
NPARC number23002302
Export citationExport as RIS
Report a correctionReport a correction
Record identifierb4c49737-9400-445d-bebc-e07acf4f2635
Record created2017-10-12
Record modified2017-10-12
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)