| DOI | Resolve DOI: https://doi.org/10.1117/12.2576945 |
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| Author | Search for: Kamandar Dezfouli, Mohsen1; Search for: Grinberg, Yuri2; Search for: Melati, Daniele; Search for: Schmid, Jens H.1; Search for: Cheben, Pavel1; Search for: Janz, Siegfried1; Search for: Xu, Danxia1 |
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| Editor | Search for: García-Blanco, Sonia M.; Search for: Cheben, Pavel1 |
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| Affiliation | - National Research Council Canada. Advanced Electronics and Photonics
- National Research Council Canada. Digital Technologies
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| Format | Text, Article |
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| Conference | Integrated Optics: Devices, Materials, and Technologies XXV, March 6-12, 2021, Online Only, United States |
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| Subject | optical design; machine learning; diffraction gratings; waveguides; integrated optics; optical fibers; silicon; interfaces; packaging; reflection |
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| Abstract | We present fully apodized and perfectly vertical surface grating couplers in 300 nm silicon waveguides. We achieve ultrahigh coupling efficiency of -0.35 dB at 1550 nm for an optical fiber with 10.4 µm mode-fiber-diameter. To this end, we followed a two stage process in which, we first optimized a pool of periodic grating couplers using machine learning techniques, and then apodized them over 100 parameters using the gradient based adjoint- method. Using a simple fabrication tolerance analysis, we also show that segment variations mostly causes a wavelength shift for the maximum coupling efficiency of the apodized grating couplers, similar to those typically observed for periodic grating couplers. |
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| Publication date | 2021-03-05 |
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| Publisher | SPIE |
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| In | |
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| Series | |
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| Language | English |
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| Peer reviewed | Yes |
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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 | 57a9ef06-2e16-4d29-a00d-6395b599438c |
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| Record created | 2021-07-28 |
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| Record modified | 2021-07-28 |
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