Detecting broadside acoustic signals with a fiber optical distributed acoustic sensing (das) assembly

A distributed fiber optic acoustic sensing system includes a cable having a cable length. The cable has an elongated body having an outer surface, and at least one straight optical fiber extending parallel to a longitudinal axis of the cable along the cable length; and one or more non-straight optic...

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Bibliographic Details
Main Authors William Birch, Jeffery Joseph Mestayer, Boris Nikolaevich Kuvshinov, Albena Alexandrova Mateeva, Johannis Josephus Den Boer, Jorge Louis Lopez, Kees Hornman, Jeremiah Glen Pearce
Format Patent
LanguageEnglish
Published 25.09.2019
Subjects
ANALOGOUS ARRANGEMENTS USING OTHER WAVES
DETECTING MASSES OR OBJECTS
DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES
MEASURING
PHYSICS
RADIO DIRECTION-FINDING
RADIO NAVIGATION
TESTING
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Summary:A distributed fiber optic acoustic sensing system includes a cable having a cable length. The cable has an elongated body having an outer surface, and at least one straight optical fiber extending parallel to a longitudinal axis of the cable along the cable length; and one or more non-straight optical fibers, such as two orthogonal sinusoidal optical fibers extending along the cable length, or a helically wrapped optical fiber extending along the cable length. The sensing system further has light transmitting and receiving means optically connected to the optical fibers.
Bibliography:Application Number: GB20140007676