Side hole Packaged -Shell Encapsulated etched FBG Hydrophone

V.R. Anand; S. Raja Ramanan; T. Santhanakrishnan; S. Asokan

doi:10.1109/jsen.2023.3308378

Side hole Packaged -Shell Encapsulated etched FBG Hydrophone

V.R. Anand
, S. Raja Ramanan
, T. Santhanakrishnan
, S. Asokan

Research output: Contribution to journal › Article › peer-review

Abstract

An underwater acoustic sensor based on side hole packaged (SHP) shell-encapsulated etched fiber Bragg grating (eFBG) has been developed and demonstrated. The packaged shell cavity provides enhancement of acoustic sensitivity as well as better mechanical protection to eFBG. First, the acoustically driven mechanical behavior of SHP-FBG hydrophone configurations has been characterized using the finite element method (FEM) simulation model. The FEM parametric analysis enables the proper selection of hydrophone’s resonant frequency by a suitable choice of the SHP length. Based on the simulations, the SHP shell-encapsulated eFBG hydrophone is fabricated and experimentally characterized over the frequency range of 0.7–2.4 kHz; a very good responsivity of $\sim $ 210 nm/MPa has been obtained.

Original language	English
Pages (from-to)	24526-24532
Number of pages	7
Journal	IEEE Sensors Journal
Volume	23
Issue number	20
DOIs	https://doi.org/10.1109/jsen.2023.3308378
Publication status	Published - 2023
Externally published	Yes

Keywords

Clad-etched fiber Bragg grating (FBG) sensor
FBG sensor
side hole packaging
underwater acoustic sensing

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10.1109/jsen.2023.3308378Licence: Other

Cite this

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title = "Side hole Packaged -Shell Encapsulated etched FBG Hydrophone",

abstract = "An underwater acoustic sensor based on side hole packaged (SHP) shell-encapsulated etched fiber Bragg grating (eFBG) has been developed and demonstrated. The packaged shell cavity provides enhancement of acoustic sensitivity as well as better mechanical protection to eFBG. First, the acoustically driven mechanical behavior of SHP-FBG hydrophone configurations has been characterized using the finite element method (FEM) simulation model. The FEM parametric analysis enables the proper selection of hydrophone{\textquoteright}s resonant frequency by a suitable choice of the SHP length. Based on the simulations, the SHP shell-encapsulated eFBG hydrophone is fabricated and experimentally characterized over the frequency range of 0.7{\textendash}2.4 kHz; a very good responsivity of \$\textbackslash{}sim \$ 210 nm/MPa has been obtained.",

keywords = "Clad-etched fiber Bragg grating (FBG) sensor, FBG sensor, side hole packaging, underwater acoustic sensing",

author = "V.R. Anand and Ramanan, \{S. Raja\} and T. Santhanakrishnan and S. Asokan",

note = "Publisher Copyright: {\textcopyright} 2001-2012 IEEE.",

year = "2023",

doi = "10.1109/jsen.2023.3308378",

language = "English",

volume = "23",

pages = "24526--24532",

journal = "IEEE Sensors Journal",

issn = "1530-437X",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "20",

}

TY - JOUR

T1 - Side hole Packaged -Shell Encapsulated etched FBG Hydrophone

AU - Anand, V.R.

AU - Ramanan, S. Raja

AU - Santhanakrishnan, T.

AU - Asokan, S.

PY - 2023

Y1 - 2023

N2 - An underwater acoustic sensor based on side hole packaged (SHP) shell-encapsulated etched fiber Bragg grating (eFBG) has been developed and demonstrated. The packaged shell cavity provides enhancement of acoustic sensitivity as well as better mechanical protection to eFBG. First, the acoustically driven mechanical behavior of SHP-FBG hydrophone configurations has been characterized using the finite element method (FEM) simulation model. The FEM parametric analysis enables the proper selection of hydrophone’s resonant frequency by a suitable choice of the SHP length. Based on the simulations, the SHP shell-encapsulated eFBG hydrophone is fabricated and experimentally characterized over the frequency range of 0.7–2.4 kHz; a very good responsivity of $\sim $ 210 nm/MPa has been obtained.

AB - An underwater acoustic sensor based on side hole packaged (SHP) shell-encapsulated etched fiber Bragg grating (eFBG) has been developed and demonstrated. The packaged shell cavity provides enhancement of acoustic sensitivity as well as better mechanical protection to eFBG. First, the acoustically driven mechanical behavior of SHP-FBG hydrophone configurations has been characterized using the finite element method (FEM) simulation model. The FEM parametric analysis enables the proper selection of hydrophone’s resonant frequency by a suitable choice of the SHP length. Based on the simulations, the SHP shell-encapsulated eFBG hydrophone is fabricated and experimentally characterized over the frequency range of 0.7–2.4 kHz; a very good responsivity of $\sim $ 210 nm/MPa has been obtained.

KW - Clad-etched fiber Bragg grating (FBG) sensor

KW - FBG sensor

KW - side hole packaging

KW - underwater acoustic sensing

UR - https://www.scopus.com/pages/publications/85170556666

U2 - 10.1109/jsen.2023.3308378

DO - 10.1109/jsen.2023.3308378

M3 - Article

SN - 1530-437X

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SP - 24526

EP - 24532

JO - IEEE Sensors Journal

JF - IEEE Sensors Journal

IS - 20

ER -

Side hole Packaged -Shell Encapsulated etched FBG Hydrophone

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Keywords

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