One is the distribution based on the principle of microbend loss is the optical fiber sensing system, the other is the sensing system of the optical fiber grating which is based on coupling theory.

• 目前有可能用于煤矿井壁安全监测的光纤传感系统有2种:一是基于光纤微弯损耗原理的分布式光纤传感系统;二是基于耦合模理论的光纤光栅传感系统。