All-Fiber DBR-Based Sensor Interrogation System for Measuring Acoustic Waves

<table>Effect of changing the distance <svg height="10.325" id="M11" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 15.175 10.325" width="15.175" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,10.325)">
<g transform="translate(72,-63.74)">
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<tspan style="font-size: 12.50px; " x="0" y="0">𝐻</tspan>
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</svg> between the spark and detection surface on the detected signal when the DBR is placed on (a) a plastic plate and (b) a metal plate. <svg height="10.325" id="M12" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 11.1875 10.325" width="11.1875" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,10.325)">
<g transform="translate(72,-63.74)">
<text transform="matrix(1,0,0,-1,-71.95,63.79)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝐿</tspan>
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</svg> is fixed at 0.3 cm.</table>

Journal of Sensors

fig8

Figure 8

Figure 8: All-Fiber DBR-Based Sensor Interrogation System for Measuring Acoustic Waves 