| DOI | Resolve DOI: https://doi.org/10.1364/OE.20.013470 |
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| Author | Search for: Halir, R.; Search for: Maese-Novo, A.; Search for: Ortega-Monux, A.; Search for: Molina-Fernández, I.; Search for: Wangüemert-Pérez, J.G.; Search for: Cheben, P.1ORCID identifier: https://orcid.org/0000-0003-4232-9130; Search for: Xu, D.-X.1; Search for: Schmid, J.H.1; Search for: Janz, S.1 |
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| Affiliation | - National Research Council of Canada. NRC Institute for Microstructural Sciences
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| Format | Text, Article |
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| Subject | 3D FDTD; dispersive properties; operation bandwidth; phase response; silicon-on-insulators; sub-wave length grating; sub-wavelength structures; wavelength ranges; diffraction gratings; dispersion (waves); optical waveguides; three dimensional computer graphics; directional couplers |
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| Abstract | Directional couplers are extensively used devices in integrated optics, but suffer from limited operational wavelength range. Here we use, for the first time, the dispersive properties of sub-wavelength gratings to achieve a fivefold enhancement in the operation bandwidth of a silicon-oninsulator directional coupler. This approach does not compromise the size or the phase response of the device. The sub-wavelength grating based directional coupler we propose covers a 100nm bandwidth with an imbalance of =0.6dB between its outputs, as supported by full 3D FDTD simulations. © 2012 Optical Society of America. |
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| Publication date | 2012 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21269368 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 1d548ffc-1e82-458b-8efd-045dab7b0432 |
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| Record created | 2013-12-12 |
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| Record modified | 2020-04-21 |
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