Tunable Fabry-Perot-resonator-based fiber-optic white-light interferometric sensor array. 
A tunable Fabry-Perot-resonator-based fiber-optic white-light interferometric quasi-distributed sensing system permitting absolute length measurement in a remote reflective sensor array is proposed and demonstrated.  The sensor reflective signals characteristics have been analyzed, and the relationship between light signal intensities and sensors number was given for multiplexing potential evaluation.  The proposed sensing scheme will be useful for the measurement of strain distribution.  An important application could be deformation sensing in smart structures.  Experimentally, a four-sensor array has been demonstrated.