Grating couplers for thick SOI rib waveguides

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DOIResolve DOI: http://doi.org/10.1007/s11082-012-9569-9
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TypeArticle
Journal titleOptical and Quantum Electronics
ISSN0306-8919
1572-817X
Volume44
Issue12-13
Pages535540; # of pages: 6
Subjectgrating coupler; planar waveguide; rib waveguide; SOI; FT spectrometer
AbstractThe use of grating couplers in high index contrast waveguides like silicon on insulator (SOI) offers several advantages over other coupling approaches, including better alignment tolerances and allowing for wafer-scale testing. The grating couplers were developed for nanometric SOI waveguides (Si-wires), and recently also for micrometric rib waveguides. In this paper we review our work in fiber-to-chip grating couplers for thick SOI rib waveguides, where a coupling efficiency of −2.2 dB was demonstrated experimentally. We also discuss the use of grating couplers to improve optical throughput (étendue) of a planar waveguide Fourier-Transform (FT) spectrometer implemented in thick rib waveguides.
Publication date
LanguageEnglish
AffiliationNRC Institute for Microstructural Sciences; National Research Council Canada
Peer reviewedYes
Identifier9569
NPARC number21268396
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Record identifier33b872f4-6fff-49fc-8be1-21d6481b9960
Record created2013-07-10
Record modified2016-05-09
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