保偏光纤偏振器的介质-金属复合光学膜系

Film System of Composite Dielectric Buffer and Metal Layers in a Polarizer of Polarization Maintaining Fiber

本文介绍了一种保偏光纤偏振器的复合光学膜系，该膜系由一层ＭｇＦ介质缓冲膜层和金属Ａｌ膜构成。理论分析和实验研究表明，该光学膜系能消去保偏光纤中的ＴＭ模，完成起偏振作用。利用此光学膜系已制成性能优良、实用的保偏光纤偏振器。消光比＞４０ｄＢ，损耗＜０．５ｄＢ。

In this paper, a film system in a polarizer of Polarization Maintaining Fiber(PMF) was described. The film system was composed of a layer of MgF buffer layer and an Al film. Theoretical analysis and experiments demonstrated that the system can eliminate TM mode and make the optical polarization in PMF. A high quality and useful polarizer was made by use of the film system.