Experimental Validation of the Sensitivity of Waveguide Grating Based Refractometric (Bio)sensors
Despite the fact that the theoretical foundations of the sensitivity of waveguide grating based (bio)sensors are well-known, understood and their implications anticipated by the scientific community since several decades, to our knowledge, no prior publication has experimentally confirmed waveguide...
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| Format: | Article |
| Language: | English |
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MDPI AG
2015-04-01
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| Series: | Biosensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/2079-6374/5/2/187 |
| _version_ | 1818541435501150208 |
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| author | Thomas E. Gartmann Florian Kehl |
| author_facet | Thomas E. Gartmann Florian Kehl |
| author_sort | Thomas E. Gartmann |
| collection | DOAJ |
| description | Despite the fact that the theoretical foundations of the sensitivity of waveguide grating based (bio)sensors are well-known, understood and their implications anticipated by the scientific community since several decades, to our knowledge, no prior publication has experimentally confirmed waveguide sensitivity for multiple film thicknesses, wavelengths and polarization of the propagating light. In this paper, the bulk refractive index sensitivity versus waveguide thickness of said refractometric sensors is experimentally determined and compared with predictions based on established theory. The effective refractive indices and the corresponding sensitivity were determined via the sensors’ coupling angles at different cover refractive indices for transverse electric as well as transverse magnetic polarized illumination at various wavelengths in the visible and near-infrared. The theoretical sensitivity was calculated by solving the mode equation for a three layer waveguide. |
| first_indexed | 2024-12-11T22:09:15Z |
| format | Article |
| id | doaj.art-edb4d80e8de44569ac9c30e50a8158b3 |
| institution | Directory Open Access Journal |
| issn | 2079-6374 |
| language | English |
| last_indexed | 2024-12-11T22:09:15Z |
| publishDate | 2015-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Biosensors |
| spelling | doaj.art-edb4d80e8de44569ac9c30e50a8158b32022-12-22T00:48:51ZengMDPI AGBiosensors2079-63742015-04-015218719810.3390/bios5020187bios5020187Experimental Validation of the Sensitivity of Waveguide Grating Based Refractometric (Bio)sensorsThomas E. Gartmann0Florian Kehl1CSEM Centre Suisse d'Electronique et de Microtechnique SA, Bahnhofstrasse 1, Landquart CH-7302, SwitzerlandCSEM Centre Suisse d'Electronique et de Microtechnique SA, Bahnhofstrasse 1, Landquart CH-7302, SwitzerlandDespite the fact that the theoretical foundations of the sensitivity of waveguide grating based (bio)sensors are well-known, understood and their implications anticipated by the scientific community since several decades, to our knowledge, no prior publication has experimentally confirmed waveguide sensitivity for multiple film thicknesses, wavelengths and polarization of the propagating light. In this paper, the bulk refractive index sensitivity versus waveguide thickness of said refractometric sensors is experimentally determined and compared with predictions based on established theory. The effective refractive indices and the corresponding sensitivity were determined via the sensors’ coupling angles at different cover refractive indices for transverse electric as well as transverse magnetic polarized illumination at various wavelengths in the visible and near-infrared. The theoretical sensitivity was calculated by solving the mode equation for a three layer waveguide.http://www.mdpi.com/2079-6374/5/2/187waveguide grating sensorgrating couplerintegrated opticsbulk refractive index sensitivity |
| spellingShingle | Thomas E. Gartmann Florian Kehl Experimental Validation of the Sensitivity of Waveguide Grating Based Refractometric (Bio)sensors Biosensors waveguide grating sensor grating coupler integrated optics bulk refractive index sensitivity |
| title | Experimental Validation of the Sensitivity of Waveguide Grating Based Refractometric (Bio)sensors |
| title_full | Experimental Validation of the Sensitivity of Waveguide Grating Based Refractometric (Bio)sensors |
| title_fullStr | Experimental Validation of the Sensitivity of Waveguide Grating Based Refractometric (Bio)sensors |
| title_full_unstemmed | Experimental Validation of the Sensitivity of Waveguide Grating Based Refractometric (Bio)sensors |
| title_short | Experimental Validation of the Sensitivity of Waveguide Grating Based Refractometric (Bio)sensors |
| title_sort | experimental validation of the sensitivity of waveguide grating based refractometric bio sensors |
| topic | waveguide grating sensor grating coupler integrated optics bulk refractive index sensitivity |
| url | http://www.mdpi.com/2079-6374/5/2/187 |
| work_keys_str_mv | AT thomasegartmann experimentalvalidationofthesensitivityofwaveguidegratingbasedrefractometricbiosensors AT floriankehl experimentalvalidationofthesensitivityofwaveguidegratingbasedrefractometricbiosensors |