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Proceedings Paper

Frequency characteristics of a semi-closed structure in a guided-wave optical pressure sensor for detection of tsunami formation: investigation based on numerical simulations and experiments
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Paper Abstract

Our group is developing a guided-wave optical pressure sensor to detect minute pressure fluctuations occurring during tsunami formation. The sensor consists of a diaphragm as a pressure-sensitive structure and a semi-closed structure with a small hole under the diaphragm which provides a unique high-pass filter function. Cutoff frequency of the high-pass characteristic is an important factor to detect pressure fluctuations due to tsunami formation. In this study, investigations were carried out on frequency characteristics and cutoff frequencies, which vary according to the semiclosed structure dimensions and pressure vibration amplitude, by numerical simulations and experiments in order to further establish design details of the sensor

Paper Details

Date Published: 2 March 2020
PDF: 8 pages
Proc. SPIE 11274, Physics and Simulation of Optoelectronic Devices XXVIII, 112741P (2 March 2020); doi: 10.1117/12.2541707
Show Author Affiliations
Taiju Triyama, Niigata Univ. (Japan)
Hana Ono, Niigata Univ. (Japan)
Naoto Takaoka, Niigata Univ. (Japan)
Masashi Ohkawa, Niigata Univ. (Japan)

Published in SPIE Proceedings Vol. 11274:
Physics and Simulation of Optoelectronic Devices XXVIII
Bernd Witzigmann; Marek Osiński; Yasuhiko Arakawa, Editor(s)

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