interferometric hydrophone

interferometric hydrophone

[‚in·tər¦fir·ə¦me·trik ‚hī·drə‚fōn]
(engineering)
A hydrophone in which pressure changes act directly or indirectly to deform an optical fiber and thus produce a phase change in light from a laser or light-emitting diode; the phase change is detected in an interferometer. Also known as fiber-optic hydrophone.
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