Design of a high-sensitivity polymer double-slot waveguide sensor for point-of-care biomedical applications
Silicon photonics is a rapidly developing field that offers cost-effective biosensors with improved sensitivity and the potential for interconnecting with other electronic devices for instant disease diagnosis. The Mach Zehnder interferometer architecture (MZI) is a key technology for biosensors, as...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2024-01-01
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| Series: | Sensors International |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666351123000293 |
| _version_ | 1797652505726812160 |
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| author | S. Prasanna Kumaar A. Sivasubramanian |
| author_facet | S. Prasanna Kumaar A. Sivasubramanian |
| author_sort | S. Prasanna Kumaar |
| collection | DOAJ |
| description | Silicon photonics is a rapidly developing field that offers cost-effective biosensors with improved sensitivity and the potential for interconnecting with other electronic devices for instant disease diagnosis. The Mach Zehnder interferometer architecture (MZI) is a key technology for biosensors, as it detects changes in refractive index (RI) caused by the presence of biomolecules. In this study, a silicon-polymer double-slot waveguide-based MZI was designed, with a small mode area and a large evanescent field to enhance light-analyte interaction. The waveguide was optimized by converting a normal slot waveguide into a double-slot waveguide with varying slot widths. In transmission spectrum, the wavelength shift was measured for both normal and disease samples. Additionally, the loss at a specific wavelength was analyzed to understand the impact of the biomolecule on the sensor performance. The results show that this sensor has a high sensitivity of 2.39 X10^5 nm/RIU, making it a promising candidate for biosensing applications. |
| first_indexed | 2024-03-11T16:30:51Z |
| format | Article |
| id | doaj.art-118c5885e9c84758bcca5931d21e8b90 |
| institution | Directory Open Access Journal |
| issn | 2666-3511 |
| language | English |
| last_indexed | 2024-03-11T16:30:51Z |
| publishDate | 2024-01-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Sensors International |
| spelling | doaj.art-118c5885e9c84758bcca5931d21e8b902023-10-24T04:07:01ZengKeAi Communications Co., Ltd.Sensors International2666-35112024-01-015100255Design of a high-sensitivity polymer double-slot waveguide sensor for point-of-care biomedical applicationsS. Prasanna Kumaar0A. Sivasubramanian1School of Electronics Engineering, Vellore Institute of Technology, Chennai, 600127, IndiaCorresponding author.; School of Electronics Engineering, Vellore Institute of Technology, Chennai, 600127, IndiaSilicon photonics is a rapidly developing field that offers cost-effective biosensors with improved sensitivity and the potential for interconnecting with other electronic devices for instant disease diagnosis. The Mach Zehnder interferometer architecture (MZI) is a key technology for biosensors, as it detects changes in refractive index (RI) caused by the presence of biomolecules. In this study, a silicon-polymer double-slot waveguide-based MZI was designed, with a small mode area and a large evanescent field to enhance light-analyte interaction. The waveguide was optimized by converting a normal slot waveguide into a double-slot waveguide with varying slot widths. In transmission spectrum, the wavelength shift was measured for both normal and disease samples. Additionally, the loss at a specific wavelength was analyzed to understand the impact of the biomolecule on the sensor performance. The results show that this sensor has a high sensitivity of 2.39 X10^5 nm/RIU, making it a promising candidate for biosensing applications.http://www.sciencedirect.com/science/article/pii/S2666351123000293 |
| spellingShingle | S. Prasanna Kumaar A. Sivasubramanian Design of a high-sensitivity polymer double-slot waveguide sensor for point-of-care biomedical applications Sensors International |
| title | Design of a high-sensitivity polymer double-slot waveguide sensor for point-of-care biomedical applications |
| title_full | Design of a high-sensitivity polymer double-slot waveguide sensor for point-of-care biomedical applications |
| title_fullStr | Design of a high-sensitivity polymer double-slot waveguide sensor for point-of-care biomedical applications |
| title_full_unstemmed | Design of a high-sensitivity polymer double-slot waveguide sensor for point-of-care biomedical applications |
| title_short | Design of a high-sensitivity polymer double-slot waveguide sensor for point-of-care biomedical applications |
| title_sort | design of a high sensitivity polymer double slot waveguide sensor for point of care biomedical applications |
| url | http://www.sciencedirect.com/science/article/pii/S2666351123000293 |
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