14 February 2005 Distributed fiber optic white light interferometric strain sensors array with a 3×3 star coupler
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Abstract
A Michelson based fiber optic low-coherence interferometric quasi-distributed sensing system permitting absolute length measurement in the sensors array is proposed. The main part of the sensing system is a fiber optic 3x3 star coupler. The architecture of the fiber optic sensors can be easy realized as a linear sensor array, twin sensor arrays or a loop sensor array. 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 6 sensors array has been demonstrated.
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Libo Yuan, Jun Yang, "Distributed fiber optic white light interferometric strain sensors array with a 3×3 star coupler", Proc. SPIE 5634, Advanced Sensor Systems and Applications II, (14 February 2005); doi: 10.1117/12.570129; https://doi.org/10.1117/12.570129
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