Detection of seismic wave signal using singlemodemultimode-singlemode fiber probe
Document Type
Article
Publication Date
1-1-2022
Abstract
A fiber-optic sensor based on singlemode-multimode-singlemode (SMS) fiber structure was proposed and demonstrated for measuring both amplitude and frequency of seismic wave signal. This sensor system consisted of an amplified spontaneous emission (ASE), SMS fiber probe and photodiode detector. A seismic wave generator was used as a seismograph stimulator. The SMS fiber probe was attached onto a loudspeaker to gather an acoustic pressure which was modulated by a seismograph signal from the audio generator. The proposed seismic wave sensor has the capability to measure the seismograph signal operating within a frequency range from 2.0-2.6 Hz with a linearity of more than 98. This sensor is advantageous due to its simplicity of the design and low fabrication cost while exhibiting good sensitivity and dynamic range. It is also suitable to be applied in real field to detect volcano eruption. © 2022 National Institute of Optoelectronics. All rights reserved.
Keywords
Energy efficiency, Fiber optic, Seismograph signal, SMS fiber structure
Divisions
sch_ecs
Funders
Universitas Airlangga
Publication Title
Journal of Optoelectronics and Advanced Materials
Volume
24
Issue
5-6
Publisher
National Institute of Optoelectronics