Temperature-independent silicon waveguides comprising bridged subwavelength gratings

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DOIResolve DOI: http://doi.org/10.1117/12.2001480
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TypeArticle
Proceedings titleSPIE - International Society for Optical Engineering. Proceedings
ConferencePhotonics North 2012, 6 June 2012 through 8 June 2012, Montreal, QC
ISSN0277-786X
ISBN9780819490902
Volume8412
Article number84120Z
SubjectAthermal; Grating duty cycle; Silicon photonics; Sub-wave length grating; Thermo-optic coefficients; Electric losses; Photonics; Silicon; Waveguides
AbstractAthermal operation of silicon waveguides for the TM and TE mode is achieved using the bridged subwavelength grating (BSWG) waveguide geometry. For the TM mode the experimental results show that the temperature-induced wavelength shift (dλ/dT) is an order of magnitude smaller for the BSWG waveguides with grating duty cycle, waveguide and bridge widths of 42%, 490 nm and 220 nm, respectively, as compared to standard photonics wires (PW). For the TE mode similar results are achieved by using the bridge width of 200 nm and similar duty cycle and waveguide width. A temperature-induced shift of only -2.5 pm/°C is reported for the TM polarized light. Propagation losses of BSWG waveguides for both polarizations were measured to be about 8 dB/cm, comparable to that of PWs. © 2012 SPIE.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for Microstructural Sciences
Peer reviewedYes
NPARC number21269399
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Record identifierba120e3d-7fe7-49ed-b59e-5af7f14248cf
Record created2013-12-12
Record modified2017-04-24
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