Plasmonic sensors based on tilted Bragg gratings in multicore optical fibers
Bare and gold-coated tilted fiber Bragg gratings (TFBGs) can nowadays be considered as a mature technology for volume and surface refractometric sensing, respectively. As for other technologies, a continuous effort is made towards the production of even more sensitive sensors, thereby enabling a high-resolution screening of the surroundings and the possible detection of rare events. To this aim, we study in this work the development of TFBG refractometers in 4-core fibers. In particular, we show that the refractometric sensitivity of the cut-off mode can reach 100 nm/RIU for a bare grating. Using another demodulation method, a tenfold sensitivity increase is obtained when tracking the extremum of the SPR (surface plasmon resonance) envelope for a gold-coated TFBG configuration. Immobilization of DNA probes was performed as a proof-of-concept to assess the high surface sensitivity of the device.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2021 |
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| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:29 |
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| Enthalten in: |
Optics express - 29(2021), 12 vom: 07. Juni, Seite 18469-18480 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Ortega-Gomez, Angel [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Revised 22.06.2021 published: Print Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1364/OE.430181 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM327015160 |
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| 520 | |a Bare and gold-coated tilted fiber Bragg gratings (TFBGs) can nowadays be considered as a mature technology for volume and surface refractometric sensing, respectively. As for other technologies, a continuous effort is made towards the production of even more sensitive sensors, thereby enabling a high-resolution screening of the surroundings and the possible detection of rare events. To this aim, we study in this work the development of TFBG refractometers in 4-core fibers. In particular, we show that the refractometric sensitivity of the cut-off mode can reach 100 nm/RIU for a bare grating. Using another demodulation method, a tenfold sensitivity increase is obtained when tracking the extremum of the SPR (surface plasmon resonance) envelope for a gold-coated TFBG configuration. Immobilization of DNA probes was performed as a proof-of-concept to assess the high surface sensitivity of the device | ||
| 650 | 4 | |a Journal Article | |
| 700 | 1 | |a Loyez, Médéric |e verfasserin |4 aut | |
| 700 | 1 | |a Lobry, Maxime |e verfasserin |4 aut | |
| 700 | 1 | |a Chah, Karima |e verfasserin |4 aut | |
| 700 | 1 | |a Zubia, Joseba |e verfasserin |4 aut | |
| 700 | 1 | |a Villatoro, Joel |e verfasserin |4 aut | |
| 700 | 1 | |a Caucheteur, Christophe |e verfasserin |4 aut | |
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