A fibre-optic low-coherence quasi-distributed strain sensing system with multi-configurations

作者：Yuan Libo^*; Yang Jun

来源：Measurement Science and Technology, 2007, 18(9): 2931-2937.

DOI：10.1088/0957-0233/18/9/024

• fibre optic sensor
• multiplexed sensor array
• low-coherence interferometer
• strain sensor

A Michelson- based fibre optic low- coherence interferometric quasi- distributed sensing system is proposed, permitting absolute length measurement in the sensor array. The main part of the sensing system is a fibre optic 3 x 3 star coupler. The architecture of the fibre optic sensor can easily be 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 six- sensor array has been demonstrated.

• 出版日期2007-9
• 单位哈尔滨工程大学