Recent advances in silicon waveguide devices using sub-wavelength gratings

Download
  1. Get@NRC: Recent advances in silicon waveguide devices using sub-wavelength gratings (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1109/JSTQE.2013.2293754
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleIEEE Journal on Selected Topics in Quantum Electronics
ISSN1077-260X
Volume20
Issue4
Article number6678715
Pages113; # of pages: 13
SubjectDispersion engineering; Fiber-to-chip grating couplers; Multimode interference couplers; Silicon photonics; Sub-wave length grating; Diffraction gratings; Fixed platforms; Integrated optics; Photonics; Refractive index; Silicon; Waveguide components; Wavelength; Dispersion (waves)
AbstractAs most integrated optics platforms, silicon offers only a fixed set of material refractive indices for designing devices. The ability of sub-wavelength patterned structures to synthesize arbitrary equivalent index values between nSi ~ 3.5 and nair = 1 has thus enabled completely new design approaches that have led to silicon waveguide devices with breakthrough performance. This review covers the latest advances in sub-wavelength structured fiber-to-chip grating couplers and multimode interference couplers. We discuss, among others, single-etch grating couplers with high coupling efficiency -1.8 dB), and broad bandwidth (115 nm at 3 dB), as well as ultra-short, high performance multi-mode interference couplers. We furthermore introduce the concept of dispersion engineering with sub-wavelength structures, showing its potential to increase the bandwidth of waveguide devices, including multi-mode interference couplers covering a 450 nm wavelength span.
Publication date
LanguageEnglish
AffiliationInformation and Communication Technologies; National Research Council Canada
Peer reviewedYes
NPARC number21272766
Export citationExport as RIS
Report a correctionReport a correction
Record identifierf97c0443-1c9c-46bb-854f-1136555c488c
Record created2014-12-03
Record modified2016-05-09
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)
Date modified: