| DOI | Resolve DOI: https://doi.org/10.1002/lpor.201200106 |
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| Author | Search for: Ortega-Moñux, Alejandro; Search for: Alonso-Ramos, Carlos; Search for: Maese-Novo, Alejandro; Search for: Halir, Robert; Search for: Zavargo-Peche, Luis; Search for: Pérez-Galacho, Diego; Search for: Molina-Fernández, Iñigo; Search for: Wangüemert-Pérez, J. Gonzalo; Search for: Cheben, Pavel1ORCID identifier: https://orcid.org/0000-0003-4232-9130; Search for: Schmid, Jens H.1; Search for: Lapointe, Jean1; Search for: Xu, Danxia1; Search for: Janz, Siegfried1 |
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| Affiliation | - National Research Council of Canada. Information and Communication Technologies
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| Format | Text, Article |
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| Subject | fundamental building blocks; multimode interference couplers; photonic integrated circuits; practical realizations; silicon-on-insulator substrates; silicon-on-insulators; silicon-wire; subwavelength grating; fabrication; light extinction; photonic devices; photonic integration technology; integrated optics |
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| Abstract | Multimode interference couplers (MMIs) are fundamental building blocks in photonic integrated circuits. Here it is experimentally demonstrated, for the first time, a two-fold length reduction in an MMI coupler without any penalty on device performance. The design is based on a slotted 2 × 2 MMI fabricated on a commercial silicon-on-insulator (SOI) substrate. The slot is implemented with a subwavelength grating (SWG) comprising holes fully etched down to the oxide cladding, thereby allowing single etch step fabrication. The device has been designed using an in-house tool based on the Fourier Eigenmode Expansion Method. It has a footprint of only 3.5 μm x 23 μm and it exhibits a measured extinction ratio better than 15 dB within the full C-band (1530 nm-1570 nm). SWG engineered slots thus offer excellent perspectives for the practical realization of MMIs couplers with substantially reduced footprint yet with outstanding performance. Multimode interference couplers (MMIs) are fundamental building blocks in photonic integrated circuits. Here it is experimentally demonstrated, for the first time, a two-fold length reduction in an MMI coupler without any penalty on device performance. The design is based on a slotted 2 × 2 MMI fabricated on a commercial silicon-on-insulator (SOI) substrate. The slot is implemented with a subwavelength grating (SWG) comprising holes fully etched down to the oxide cladding, thereby allowing single etch step fabrication. The device has been designed using an in-house tool based on the Fourier Eigenmode Expansion Method. It has a footprint of only 3.5 μm x 23 μm and it exhibits a measured extinction ratio better than 15 dB within the full C-band (1530 nm-1570 nm). SWG engineered slots thus offer excellent perspectives for the practical realization of MMIs couplers with substantially reduced footprint yet with outstanding performance. © 2013 by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
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| Publication date | 2013 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21270655 |
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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 | a075e520-4991-4733-889c-a03a8ad1e0bb |
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| Record created | 2014-02-17 |
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| Record modified | 2020-04-22 |
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