采用偏振分光棱镜的光桥式补偿技术

Optic Bridge Compensation Technique Using a Polarization Splitting Prism

介绍了一种使用偏振分光棱镜的新型光桥式补偿技术。研究了棱镜消光比变化引起的误差。使用该补偿结构的光纤压力传感器已实际应用于石油化工部门油罐储量计量，其现场运行长期稳定性优于０．２％。

A novel optic bridge compensation technique using polarization splitting prism is presented in paper.The errors caused by prism extinction ratio variation are investigated.The optic fiber sensor using the compensation structure has been practically applied to the metric instruments for measuring oil tank reserve in petroleum and chemical departments,its field operating stability is more than 0.2% for a long time.