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Split boss diaphragm based fiber Bragg grating pressure sensor with increased sensitivity

Manuvinakurake, M and Gandhi, U and Mangalanathan, U and Sebastian, S and Sundarrajan, A and Yadav, D and Nayak, M (2021) Split boss diaphragm based fiber Bragg grating pressure sensor with increased sensitivity. In: Journal of Optoelectronics and Advanced Materials, 23 (3-4). pp. 134-144.

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In the proposed work we would like to present a stainless steel (SS) based pressure sensor using a split boss diaphragm mounted with a fiber Bragg grating (FBG) at its centre. This proposed stress transfer mechanism provides maximum stress to the fiber, resulting in improved sensitivity. The sensor is fabricated and tested for its performance for both static as well as dynamic pressure and is also benchmarked with a flat diaphragm pressure sensor. The developed sensor exhibits an enhanced pressure sensitivity of 0.742 nm/bar, which is ~10 times higher than the flat diaphragm based sensor. The sensor's dynamic sensing characteristics of peak output, rise time were 4.94 nm and 1.2 ms respectively. © 2021 National Institute of Optoelectronics. All rights reserved.

Item Type: Journal Article
Publication: Journal of Optoelectronics and Advanced Materials
Publisher: National Institute of Optoelectronics
Additional Information: The copyright for this article belongs to National Institute of Optoelectronics
Keywords: Pressure sensors; Steel fibers, Diaphragm based sensors; Diaphragm pressure; Dynamic pressures; Dynamic sensing; Maximum stress; Pressure sensitivities; Risetimes; Stress transfer mechanisms, Fiber Bragg gratings
Department/Centre: Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited: 20 Nov 2021 12:41
Last Modified: 20 Nov 2021 12:41
URI: http://eprints.iisc.ac.in/id/eprint/69911

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