Abstract
Fiber‐optic sensors are finding wide use in underwater and seismic applications due to their ease of construction, wide useful acoustic bandwidth, sensor deployment ranges from the light source of 10 km or more, robust temperature and static pressure tolerance, and immunity from requiring supporting electronics near the measurement points. The theoretical sensitivity for a number of optical sensor designs are compared with experimental data. Their signal‐to‐noise performance is assessed from the standpoint of minimum detectable signal, environmental background, and optical noise source.
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