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<p>the optical signal<br/>
# converting it into an electrical signal</p>

<p><big> Applications </big></p>
<p><a href="page.php?w=Optical_fiber">Optical fiber</a> is used by telecommunications companies to transmit telephone signals, Internet communication and cable television signals. It is also used in other industries, including medical, defense, government, industrial and commercial. In addition to serving the purposes of telecommunications, it is used as light guides, for imaging tools, lasers, hydrophones for seismic waves, SONAR, and as sensors to</p><p>
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