Asymmetric Concentric Microring Resonator Label-Free Biosensors
A study of label-free silicon nitride asymmetric double-microring resonators is presented. The use of highly accurate 3D vector modal techniques permits an extensive exploration of the parameter space defining the architecture of the proposed device in the search for optimal geometries and reaching...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/9/1/27 |
| _version_ | 1797491094352560128 |
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| author | Pedro Chamorro-Posada |
| author_facet | Pedro Chamorro-Posada |
| author_sort | Pedro Chamorro-Posada |
| collection | DOAJ |
| description | A study of label-free silicon nitride asymmetric double-microring resonators is presented. The use of highly accurate 3D vector modal techniques permits an extensive exploration of the parameter space defining the architecture of the proposed device in the search for optimal geometries and reaching configurations not addressed in previous studies that had been limited to symmetrical configurations. Asymmetry, on the other hand, permits to access resonances that exploit the radiation-quenching properties of the structure in an optimal way. The analysis presented also includes the effect of absorption in the sensor aqueous cladding that is generally omitted. The results of the numerical survey indicate that the optimized geometries bring about a substantive performance improvement at small microring radii that are impractical for more conventional single-ring geometries due to the high radiation losses. Therefore, lower footprint devices, and a larger scale of integration, can be attained with the proposed structure. |
| first_indexed | 2024-03-10T00:42:16Z |
| format | Article |
| id | doaj.art-b3d7233188d54942a2a08b0c461e4df1 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-10T00:42:16Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-b3d7233188d54942a2a08b0c461e4df12023-11-23T15:06:14ZengMDPI AGPhotonics2304-67322022-01-01912710.3390/photonics9010027Asymmetric Concentric Microring Resonator Label-Free BiosensorsPedro Chamorro-Posada0Dpto. de Teoría de la Señal y Comunicaciones e Ingeniería Telemática, Campus Miguel Delibes, Universidad de Valladolid, ETSI Telecomunicación, Paseo de Belén 15, 47011 Valladolid, SpainA study of label-free silicon nitride asymmetric double-microring resonators is presented. The use of highly accurate 3D vector modal techniques permits an extensive exploration of the parameter space defining the architecture of the proposed device in the search for optimal geometries and reaching configurations not addressed in previous studies that had been limited to symmetrical configurations. Asymmetry, on the other hand, permits to access resonances that exploit the radiation-quenching properties of the structure in an optimal way. The analysis presented also includes the effect of absorption in the sensor aqueous cladding that is generally omitted. The results of the numerical survey indicate that the optimized geometries bring about a substantive performance improvement at small microring radii that are impractical for more conventional single-ring geometries due to the high radiation losses. Therefore, lower footprint devices, and a larger scale of integration, can be attained with the proposed structure.https://www.mdpi.com/2304-6732/9/1/27microring resonatorsbiosensorssilicon photonicssilicon nitride |
| spellingShingle | Pedro Chamorro-Posada Asymmetric Concentric Microring Resonator Label-Free Biosensors Photonics microring resonators biosensors silicon photonics silicon nitride |
| title | Asymmetric Concentric Microring Resonator Label-Free Biosensors |
| title_full | Asymmetric Concentric Microring Resonator Label-Free Biosensors |
| title_fullStr | Asymmetric Concentric Microring Resonator Label-Free Biosensors |
| title_full_unstemmed | Asymmetric Concentric Microring Resonator Label-Free Biosensors |
| title_short | Asymmetric Concentric Microring Resonator Label-Free Biosensors |
| title_sort | asymmetric concentric microring resonator label free biosensors |
| topic | microring resonators biosensors silicon photonics silicon nitride |
| url | https://www.mdpi.com/2304-6732/9/1/27 |
| work_keys_str_mv | AT pedrochamorroposada asymmetricconcentricmicroringresonatorlabelfreebiosensors |