Temperature-independent silicon subwavelength grating waveguides

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DOIResolve DOI: http://doi.org/10.1364/OL.36.002110
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TypeArticle
Journal titleOptics Letters
Volume36
Issue11
Pages21102112; # of pages: 3
AbstractWe demonstrate, by experiment and numerical calculations, temperature-independent subwavelength grating waveguides with a periodic composite core composed of alternating regions of silicon and SU-8 polymer. The polymer has a negative thermo-optic (TO) material coefficient that cancels the large positive TO effect of the silicon. Measurements and Bloch mode calculations were carried out over a range of silicon–polymer duty ratios. The lowest measured TO coefficient at a wavelength of 1550nm is 1.8 × 10−6 K−1; 2 orders of magnitude smaller than a conventional silicon photonic wire waveguide. Calculations predict the possibility of complete cancellation of the silicon waveguide temperature dependence.
Publication date
PublisherOptical Society of America
LanguageEnglish
AffiliationNRC Institute for Microstructural Sciences; National Research Council Canada
Peer reviewedYes
NPARC number19302705
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Record identifier523844b8-a7f0-4172-b4f0-3047e0b5e01c
Record created2012-01-20
Record modified2016-05-09
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