Abstract
Laser-self-mixing has been successfully applied to measuring both mechanical and
thermal deformations in single-mode optical fibers attached to a solid bar. Strain
resolution of 5 x 10<sup>-7</sup> Δ L /L has been achieved in a continuous range
spanning three orders of magnitude. Temperature compensation is not necessary if
deformations/vibrations occurred on a time scale faster than environmental thermal
changes. A calibrated fiber thermometer has been implemented to correct for the
temperature induced phase drift in case of thermal deformations.
© 2010 IEEE
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