Abstract
A Fiber Optic Distributed Differential Displacement Sensor (FODDDS) that
is temperature insensitive is modelled and experimentally verified to
determine shape. Created using a steel tape, 9/125 <i>μ</i>m single-mode fiber, and
adhesive, the FODDDS can be used to determine the shape or displacement of
any object to which it is attached. The sensitivity of the FODDDS, for the
substrate thickness used in this experiment, is specified as a maximum
measurable radius of curvature of 103 m. The error of the sensor is examined
and the sources of this error are examined. The FODDDS is designed around a
Brillouin Optical Time-Domain Analysis system, but is compatible with both
correlation and frequency domain based systems.
© 2011 IEEE
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