interferometric hydrophone [´in·tǝr¦fir·ǝ¦me·trik ´hī·drǝ´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. |