Enhancing the Scattering Induced by Gold Periodic Arrays Over Optical Waveguides Through Indium Tin Oxide Buffer Layers
This article presents the optical analysis on how the light coupling performance between optical channel waveguides and gold periodic nanoarrays in the visible spectrum can be improved using an indium tin oxide (ITO) thin film as buffer layer. Coupling efficiency, out-of-plane scattering and far-fie...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2024-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10458297/ |
| _version_ | 1797215096432230400 |
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| author | Rita Asquini Alessio Buzzin Nicolas Hanine Alessia Mannetta Badrul Alam Vincenzo Ferrara |
| author_facet | Rita Asquini Alessio Buzzin Nicolas Hanine Alessia Mannetta Badrul Alam Vincenzo Ferrara |
| author_sort | Rita Asquini |
| collection | DOAJ |
| description | This article presents the optical analysis on how the light coupling performance between optical channel waveguides and gold periodic nanoarrays in the visible spectrum can be improved using an indium tin oxide (ITO) thin film as buffer layer. Coupling efficiency, out-of-plane scattering and far-field projected beam focus and diffraction angle are evaluated using Finite-Difference Time-Domain (FDTD) method and scattering theory for different nanogratings and nanocylinders array patterns. The implementation of ITO enables up to a 12 fold increase in coupling efficiency, a 6.4 fold enhancement of light scattered out of the array plane and consequent improvements in the diffracted beam radiation intensity peaks, without compromising the beam's focus or altering its deflection angle. This configuration provides a cheap and simple solution to increase the device performance without changing the array features, for integrated biosensing and scattering-related applications. |
| first_indexed | 2024-04-24T11:24:38Z |
| format | Article |
| id | doaj.art-8206c77d30cc4a06a27c5e697d741d4f |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-04-24T11:24:38Z |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-8206c77d30cc4a06a27c5e697d741d4f2024-04-10T23:00:02ZengIEEEIEEE Photonics Journal1943-06552024-01-011621610.1109/JPHOT.2024.337128910458297Enhancing the Scattering Induced by Gold Periodic Arrays Over Optical Waveguides Through Indium Tin Oxide Buffer LayersRita Asquini0https://orcid.org/0000-0002-2898-9047Alessio Buzzin1https://orcid.org/0000-0002-8071-5406Nicolas Hanine2https://orcid.org/0009-0002-7999-3529Alessia Mannetta3https://orcid.org/0009-0002-7147-1582Badrul Alam4https://orcid.org/0000-0002-3052-7423Vincenzo Ferrara5https://orcid.org/0000-0001-8625-4308Department of Information Engineering, Electronics and Telecommunications, “Sapienza” University of Rome, Rome, ItalyDepartment of Information Engineering, Electronics and Telecommunications, “Sapienza” University of Rome, Rome, ItalyDepartment of Information Engineering, Electronics and Telecommunications, “Sapienza” University of Rome, Rome, ItalyDepartment of Information Engineering, Electronics and Telecommunications, “Sapienza” University of Rome, Rome, ItalyDepartment of Information Engineering, Electronics and Telecommunications, “Sapienza” University of Rome, Rome, ItalyDepartment of Information Engineering, Electronics and Telecommunications, “Sapienza” University of Rome, Rome, ItalyThis article presents the optical analysis on how the light coupling performance between optical channel waveguides and gold periodic nanoarrays in the visible spectrum can be improved using an indium tin oxide (ITO) thin film as buffer layer. Coupling efficiency, out-of-plane scattering and far-field projected beam focus and diffraction angle are evaluated using Finite-Difference Time-Domain (FDTD) method and scattering theory for different nanogratings and nanocylinders array patterns. The implementation of ITO enables up to a 12 fold increase in coupling efficiency, a 6.4 fold enhancement of light scattered out of the array plane and consequent improvements in the diffracted beam radiation intensity peaks, without compromising the beam's focus or altering its deflection angle. This configuration provides a cheap and simple solution to increase the device performance without changing the array features, for integrated biosensing and scattering-related applications.https://ieeexplore.ieee.org/document/10458297/ArraysFDTDgoldgratingsindium tin oxideoptical coupling |
| spellingShingle | Rita Asquini Alessio Buzzin Nicolas Hanine Alessia Mannetta Badrul Alam Vincenzo Ferrara Enhancing the Scattering Induced by Gold Periodic Arrays Over Optical Waveguides Through Indium Tin Oxide Buffer Layers IEEE Photonics Journal Arrays FDTD gold gratings indium tin oxide optical coupling |
| title | Enhancing the Scattering Induced by Gold Periodic Arrays Over Optical Waveguides Through Indium Tin Oxide Buffer Layers |
| title_full | Enhancing the Scattering Induced by Gold Periodic Arrays Over Optical Waveguides Through Indium Tin Oxide Buffer Layers |
| title_fullStr | Enhancing the Scattering Induced by Gold Periodic Arrays Over Optical Waveguides Through Indium Tin Oxide Buffer Layers |
| title_full_unstemmed | Enhancing the Scattering Induced by Gold Periodic Arrays Over Optical Waveguides Through Indium Tin Oxide Buffer Layers |
| title_short | Enhancing the Scattering Induced by Gold Periodic Arrays Over Optical Waveguides Through Indium Tin Oxide Buffer Layers |
| title_sort | enhancing the scattering induced by gold periodic arrays over optical waveguides through indium tin oxide buffer layers |
| topic | Arrays FDTD gold gratings indium tin oxide optical coupling |
| url | https://ieeexplore.ieee.org/document/10458297/ |
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