Design of a Label-Free, Distributed Bragg Grating Resonator Based Dielectric Waveguide Biosensor
In this work, we present a resonant, dielectric waveguide device based on distributed Bragg gratings for label-free biosensing applications. The refractive index sensitive optical transducer aims at improving the performance of planar waveguide grating sensor systems with limited Q-factor and dynami...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2015-01-01
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| Series: | Photonics |
| Subjects: | |
| Online Access: | http://www.mdpi.com/2304-6732/2/1/124 |
| _version_ | 1819157391491465216 |
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| author | Florian Kehl David Bischof Markus Michler Mirjad Keka Ross Stanley |
| author_facet | Florian Kehl David Bischof Markus Michler Mirjad Keka Ross Stanley |
| author_sort | Florian Kehl |
| collection | DOAJ |
| description | In this work, we present a resonant, dielectric waveguide device based on distributed Bragg gratings for label-free biosensing applications. The refractive index sensitive optical transducer aims at improving the performance of planar waveguide grating sensor systems with limited Q-factor and dynamic range by combing the advantages of resonant cavities, such as a multitude of resonance peaks with high finesse, with the manageable complexity of waveguide grating couplers. The general sensor concept is introduced and supported by theoretical considerations as well as numerical simulations based on Coupled Mode Theory. In contrast to a single Bragg grating reflector, the presented Fabry-Pérot type distributed Bragg resonator exhibits an extended measurement range as well as relaxed fabrication tolerances. The resulting, relatively simple sensor structure can be fabricated with standard lithographic means and is independent of expensive light-sources and/or detectors, making an affordable but sensitive device, potentially suitable for point-of-care applications. |
| first_indexed | 2024-12-22T16:08:00Z |
| format | Article |
| id | doaj.art-424cabd41adf4b7cae620415dda743e0 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-12-22T16:08:00Z |
| publishDate | 2015-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-424cabd41adf4b7cae620415dda743e02022-12-21T18:20:32ZengMDPI AGPhotonics2304-67322015-01-012112413810.3390/photonics2010124photonics2010124Design of a Label-Free, Distributed Bragg Grating Resonator Based Dielectric Waveguide BiosensorFlorian Kehl0David Bischof1Markus Michler2Mirjad Keka3Ross Stanley4Laboratory of Biosensors and Bioelectronics (LBB), Swiss Federal Institute of Technology ETH, Gloriastrasse 35, Zürich CH-8092, SwitzerlandUniversity of Applied Sciences and Technology NTB, Werdenbergstrasse 4, Buchs CH-9470, SwitzerlandUniversity of Applied Sciences and Technology NTB, Werdenbergstrasse 4, Buchs CH-9470, SwitzerlandUniversity of Applied Sciences and Technology NTB, Werdenbergstrasse 4, Buchs CH-9470, SwitzerlandCSEM Centre Suisse d'Electronique et de Microtechnique SA, Rue Jaquet-Droz 1, Neuchâtel CH-2002, SwitzerlandIn this work, we present a resonant, dielectric waveguide device based on distributed Bragg gratings for label-free biosensing applications. The refractive index sensitive optical transducer aims at improving the performance of planar waveguide grating sensor systems with limited Q-factor and dynamic range by combing the advantages of resonant cavities, such as a multitude of resonance peaks with high finesse, with the manageable complexity of waveguide grating couplers. The general sensor concept is introduced and supported by theoretical considerations as well as numerical simulations based on Coupled Mode Theory. In contrast to a single Bragg grating reflector, the presented Fabry-Pérot type distributed Bragg resonator exhibits an extended measurement range as well as relaxed fabrication tolerances. The resulting, relatively simple sensor structure can be fabricated with standard lithographic means and is independent of expensive light-sources and/or detectors, making an affordable but sensitive device, potentially suitable for point-of-care applications.http://www.mdpi.com/2304-6732/2/1/124diffraction gratingswaveguide grating couplersoptical resonatorsfabry-pérotBragg reflectorsplanar waveguideslabel-free biosensing |
| spellingShingle | Florian Kehl David Bischof Markus Michler Mirjad Keka Ross Stanley Design of a Label-Free, Distributed Bragg Grating Resonator Based Dielectric Waveguide Biosensor Photonics diffraction gratings waveguide grating couplers optical resonators fabry-pérot Bragg reflectors planar waveguides label-free biosensing |
| title | Design of a Label-Free, Distributed Bragg Grating Resonator Based Dielectric Waveguide Biosensor |
| title_full | Design of a Label-Free, Distributed Bragg Grating Resonator Based Dielectric Waveguide Biosensor |
| title_fullStr | Design of a Label-Free, Distributed Bragg Grating Resonator Based Dielectric Waveguide Biosensor |
| title_full_unstemmed | Design of a Label-Free, Distributed Bragg Grating Resonator Based Dielectric Waveguide Biosensor |
| title_short | Design of a Label-Free, Distributed Bragg Grating Resonator Based Dielectric Waveguide Biosensor |
| title_sort | design of a label free distributed bragg grating resonator based dielectric waveguide biosensor |
| topic | diffraction gratings waveguide grating couplers optical resonators fabry-pérot Bragg reflectors planar waveguides label-free biosensing |
| url | http://www.mdpi.com/2304-6732/2/1/124 |
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