干涉型全光纤加速度地震检波器

An all-fiber interference type acceleration seismic detector

以全光纤迈克尔逊干涉仪为基础,研制出由地震敏感元件组成的单分量双光路加速度地震检波器样机,并提出了三分量检波器的设计方案。为了考察缠绕光纤前后顺变柱体弹性模量的变化,做了拉伸和压缩实验,以确定其作为敏感元件的关键特性。该检波器可用于检测小到0.01g的加速度。

With all-fiber Michelson interferometer as a basis, an acceleration seismic detector prototype with single component and dual-optical path consisting of seismic sensitive elements is developed, and a design scheme with three-component detector is proposed. In order to evaluate the elastic modulus variations of the compliant cylinder before and after being wrapped by fiber, Stretching and compression test are carried out to determine whether its critical properties are suitable for using as a sensitive element. The detector can be applied to detection an acceleration that is as small as 0.01g.