中文摘要：

根据有低粘性系数的液体的表面是为一根宽带光横梁的一架好思考飞机的事实，在测微计分辨率的液体级的测量在反映的轻横梁的米切尔森 configuration.The 波浪前面基于光纤的低连贯干涉仪被设计足够好形成 interferogram ，一根横梁从在 interferogram 的中央山峰作为一项措施被读的走的 scanning-motor.The 上装的一面眼的镜子思考了液体

英文摘要：

According to the fact that the surface of liquid with low viscosity coefficient is a good reflection plane for a broadband light beam, liquid-level measurement in micrometer resolution is designed based on a fiber-optic low coherence interferometer in Michelson configuration. The wave front of the reflected light beam is well enough to form an interferogram with a beam reflected from an optic mirror mounted on a stepping scanning-motor. The central peak of the interferogram is read as a measure of the liquid level. Experimental results show that this noncontact method can reach a resolution of ± 1.25μm in the measurement range of 86 mm.