Stability-enhanced low-frequency fiber optic hydrophone based on an extrinsic Fabry-Perot interferometer.
Opt Express
; 32(8): 13408-13418, 2024 Apr 08.
Article
em En
| MEDLINE
| ID: mdl-38859312
ABSTRACT
Fiber optic hydrophones (FOHs) offer the notable advantage of electromagnetic interference resistance. Nevertheless, overcoming the challenge of sustaining stable, high-performance operation in intricate underwater settings at a low cost remains a considerable obstacle for them. To circumvent the restrictions noted above, we employed a miniaturized FOH, utilizing an easily fabricated extrinsic Fabry-Perot interferometer (EFPI) which is made up of a composite chromium-aluminum (Cr-Al) membrane and fiber. The linear demodulation also suppresses the drift issue in the output spectrum. The average sound pressure sensitivity of the sensor, according to experimental findings, is around -139.15â
dB re 1â
V/µPa, while the equivalent noise sound pressure at 1 kHz is 51.52â
dB re 1 µPa/Hz1/2. This sensor has a lot of potential because of features like sensitive low-frequency response and noise performance.
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01-internacional
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MEDLINE
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article