A methodical approach to design adiabatic waveguide couplers for heterogeneous integrated photonics
We present an elegant and effective approach for the design of adiabatic waveguide couplers tailored for the heterogeneous integration of photonic building blocks. This method empowers users to incorporate the shortest taper(s) in their designs, while upholding optimal coupling efficiency. The techn...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | JPhys Photonics |
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| Online Access: | https://doi.org/10.1088/2515-7647/ad7cae |
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| author | Jef Van Asch Ahmed Kandeel Junwen He Jeroen Missinne Peter Bienstman Dries Van Thourhout Geert Van Steenberge Joris Van Campenhout |
| author_facet | Jef Van Asch Ahmed Kandeel Junwen He Jeroen Missinne Peter Bienstman Dries Van Thourhout Geert Van Steenberge Joris Van Campenhout |
| author_sort | Jef Van Asch |
| collection | DOAJ |
| description | We present an elegant and effective approach for the design of adiabatic waveguide couplers tailored for the heterogeneous integration of photonic building blocks. This method empowers users to incorporate the shortest taper(s) in their designs, while upholding optimal coupling efficiency. The technique assesses mode overlap between a minimum of two waveguides within the cross-section of any heterogeneous material stack, determining the necessary waveguide cross-sectional dimension to achieve optimal coupling efficiency. Two illustrative design applications are showcased and compared to a linear, concave, and convex taper for reference: a SiN-to-polymer structure exhibiting a 40% coupling improvement and a Si-to-GeSi structure having a 2.2 up to 5 times shorter length. |
| format | Article |
| id | doaj-art-5b47f2939cd846beadb8702d08fa241e |
| institution | OA Journals |
| issn | 2515-7647 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | JPhys Photonics |
| spelling | doaj-art-5b47f2939cd846beadb8702d08fa241e2025-08-20T01:56:01ZengIOP PublishingJPhys Photonics2515-76472024-01-016404501310.1088/2515-7647/ad7caeA methodical approach to design adiabatic waveguide couplers for heterogeneous integrated photonicsJef Van Asch0https://orcid.org/0000-0002-0784-1131Ahmed Kandeel1https://orcid.org/0009-0005-0663-5714Junwen He2Jeroen Missinne3https://orcid.org/0000-0002-3470-620XPeter Bienstman4https://orcid.org/0000-0001-6259-464XDries Van Thourhout5https://orcid.org/0000-0003-0111-431XGeert Van Steenberge6https://orcid.org/0000-0001-8574-1235Joris Van Campenhout7https://orcid.org/0000-0003-0778-2669Imec , Kapeldreef 75, 3001, Leuven, Belgium; Centre for Microsystems Technology (CMST), imec and Ghent University , Technologiepark 126, 9052 Gent, BelgiumImec , Kapeldreef 75, 3001, Leuven, Belgium; Photonics Research Group (PRG), imec and Ghent University , Technologiepark 126, 9052 Gent, BelgiumImec , Kapeldreef 75, 3001, Leuven, Belgium; Currently at Huawei TechnologiesCentre for Microsystems Technology (CMST), imec and Ghent University , Technologiepark 126, 9052 Gent, BelgiumPhotonics Research Group (PRG), imec and Ghent University , Technologiepark 126, 9052 Gent, BelgiumPhotonics Research Group (PRG), imec and Ghent University , Technologiepark 126, 9052 Gent, BelgiumCentre for Microsystems Technology (CMST), imec and Ghent University , Technologiepark 126, 9052 Gent, BelgiumImec , Kapeldreef 75, 3001, Leuven, BelgiumWe present an elegant and effective approach for the design of adiabatic waveguide couplers tailored for the heterogeneous integration of photonic building blocks. This method empowers users to incorporate the shortest taper(s) in their designs, while upholding optimal coupling efficiency. The technique assesses mode overlap between a minimum of two waveguides within the cross-section of any heterogeneous material stack, determining the necessary waveguide cross-sectional dimension to achieve optimal coupling efficiency. Two illustrative design applications are showcased and compared to a linear, concave, and convex taper for reference: a SiN-to-polymer structure exhibiting a 40% coupling improvement and a Si-to-GeSi structure having a 2.2 up to 5 times shorter length.https://doi.org/10.1088/2515-7647/ad7caephotonic integrated circuitsheterogeneous integrationadiabatic couplingoptical design‘Mono’ taper |
| spellingShingle | Jef Van Asch Ahmed Kandeel Junwen He Jeroen Missinne Peter Bienstman Dries Van Thourhout Geert Van Steenberge Joris Van Campenhout A methodical approach to design adiabatic waveguide couplers for heterogeneous integrated photonics JPhys Photonics photonic integrated circuits heterogeneous integration adiabatic coupling optical design ‘Mono’ taper |
| title | A methodical approach to design adiabatic waveguide couplers for heterogeneous integrated photonics |
| title_full | A methodical approach to design adiabatic waveguide couplers for heterogeneous integrated photonics |
| title_fullStr | A methodical approach to design adiabatic waveguide couplers for heterogeneous integrated photonics |
| title_full_unstemmed | A methodical approach to design adiabatic waveguide couplers for heterogeneous integrated photonics |
| title_short | A methodical approach to design adiabatic waveguide couplers for heterogeneous integrated photonics |
| title_sort | methodical approach to design adiabatic waveguide couplers for heterogeneous integrated photonics |
| topic | photonic integrated circuits heterogeneous integration adiabatic coupling optical design ‘Mono’ taper |
| url | https://doi.org/10.1088/2515-7647/ad7cae |
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