Yuan Libo, Yang Jun
Department of Physics, School of Science, Harbin Engineering University, Harbin 150001, China.
Opt Lett. 2005 May 1;30(9):961-3. doi: 10.1364/ol.30.000961.
A Michelson-based fiber-optic low-coherence interferometric quasi-distributed sensing system permitting absolute length measurement in a sensor array is proposed. The main part of the sensing system is a fiberoptic 3 x 3 star coupler. The architecture of fiber-optic sensors can be easily 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. A six-sensor array is demonstrated experimentally.
提出了一种基于迈克尔逊干涉仪的光纤低相干干涉准分布式传感系统，该系统能够在传感器阵列中进行绝对长度测量。传感系统的主要部分是一个光纤3×3星形耦合器。光纤传感器的架构可以很容易地实现为线性传感器阵列、双传感器阵列或环形传感器阵列。所提出的传感方案将有助于应变分布的测量。一个重要的应用可能是智能结构中的变形传感。通过实验展示了一个六传感器阵列。
