中文摘要：

利用光纤3×3耦合器和光纤光栅（FBG）,构成能有效补偿环境干扰的光纤干涉位移测量系统。测量系统含干涉臂几乎重合的两个光纤迈克尔逊干涉仪,其中一个通过反馈环节补偿环境干扰的影响,实现对测量系统的稳定,使系统适合于在线测量;另一个用于完成测量工作。利用零差干涉相位测量技术对位移进行测量,测量结果的线性相关系数达0.999。

英文摘要：

A self-compensating fiber interferometric displacement measurement system which is made with a fiber 3×3 coupler and fiber Bragg gratings（FBGs） is presented.The measurement system includes two fiber Michelson interferometers.One is used to stabilise the system by using an electronic feedback loop to compensate the environmental disturbances,while the other one is used to perform the measurement task.By means of phase-tracking homodyne technique,the linear regression coefficient of the measurement displacement has been 0.999.