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Title: Diamond coated fiber optic interferometric sensors: fabrication and application
Author: Kyatam, Shusmitha
Oliveira, Ricardo
Rocha, Ana M.
Mukherjee, Debarati
Neto, Miguel A.
Oliveira, Filipe J.
Khan, Muhammad A.
Correia, Maria R. P.
Mendes, Joana C.
Issue Date: 1-Nov-2023
Publisher: Optica Publishing Group
Abstract: Diamond films were deposited by chemical vapor deposition (CVD) on the tip of Fabry-Perot (FPI) and multi-mode (MMI) optical fiber interferometers. Diamond provides a robust interface capable of forming covalent bonds between atoms on its surface and receptor molecules, required for biosensing applications. The films were characterized by optical and scanning electron microscopy (SEM), optical profilometry and Raman spectroscopy. The diamond-coated interferometers were tested with different refractive index solutions. The sensors response was 40 ± 1 dB/RIU and −987 ± 70 pm/ RIU for the FPI and −11 ± 1 dB/RIU for the MMI.
Peer review: yes
DOI: 10.1364/OME.500100
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