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MANJUNATH MANUVINAKURAKE1,* , UMAGANDHI2, UMAPATHYMANGALANATHAN2, SUNEETHA SEBASTIAN3, ASOKAN SUNDARRAJAN3, DHANANJAYYADAV1, MANJUNATHANAYAK1
- Centre for Nano Science and Engineering,Indian Institute of Science, Bangalore, 560012,India
- Department of Instrumentation and Control Engineering, National Institute of Technology, Tiruchirappalli, 620015, India
- Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore, 560012, India
In the proposed work we would like to present astainless 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 maximumstress to the fiber, resulting in improved sensitivity.The sensor is fabricated and tested for its performancefor both staticas well asdynamic pressureand is also benchmarkedwith 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'sdynamic sensing characteristics of peak output,risetime were4.94 nm and1.2 ms respectively..
Pressure sensor, Flat diaphragm, Split boss diaphragm, Fiber Bragg grating.
Submitted at: Jan. 20, 2020
Accepted at: April 8, 2021
MANJUNATH MANUVINAKURAKE, UMAGANDHI, UMAPATHYMANGALANATHAN, SUNEETHA SEBASTIAN, ASOKAN SUNDARRAJAN, DHANANJAYYADAV, MANJUNATHANAYAK, Split boss diaphragm based fiber Bragg grating pressure sensor with increased sensitivity, Journal of Optoelectronics and Advanced Materials Vol. 23, Iss. 3-4, pp. 134-144 (2021)
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