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Instrumentation Science & Technology Volume 49, 2021 - Issue 4
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Original Articles

Preparation and characterization of a silver-magnesium fluoride bi-layers based fiber optic surface plasmon resonance sensor

Vicky KapoorDepartment of Physics and Materials Science and Engineering, Jaypee Institute of Information Technology, Noida, IndiaView further author information
&
Navneet K. SharmaDepartment of Physics and Materials Science and Engineering, Jaypee Institute of Information Technology, Noida, IndiaCorrespondence[email protected]
ORCID Iconhttps://orcid.org/0000-0002-6771-2075View further author information
ORCID Icon
Pages 395-403 | Published online: 13 Jan 2021
 
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Abstract

The influence of thickness of silver-magnesium fluoride bi-layers on the sensitivity of SPR based fiber optic sensor has been experimentally examined. The sensitivity is enhanced with increasing magnesium fluoride layer thickness up to 30 nm and decreases at values exceeding 30 nm. The optimum thickness of magnesium fluoride layer was determined to be 30 nm. A sensor fabricated from bi-layers of 40 nm thick silver and 30 nm thick magnesium fluoride demonstrated favorable sensing behavior.

Acknowledgement

The authors are grateful to Defense Research and Development Organization (DRDO), India for providing a grant through project number ERIP/ER/DG-ECS/990116205/M/01/1687.

Additional information

Funding

Defence Research and Development Organisation.

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