角度调谐滤光片带宽消偏振研究  

Research on Bandwidth Depolarization of the Angle-Tuning Filter

作　　者：俞侃[1,2] 黄德修[1,2] 樊玲[3] 包佳祺[1] 吴长发[1] 

机构地区：[1]华中科技大学文华学院,湖北武汉430074 [2]武汉光电国家实验室,湖北武汉430074 [3]北京邮电大学民族教育学院,北京100876

出　　处：《光学学报》2010年第1期214-217,共4页Acta Optica Sinica

摘　　要：倾斜入射时薄膜窄带滤光片的s和p偏振光的带宽会随着入射角度的增大出现分离,限制了滤光片的调谐范围。分析了偏振光带宽分离现象出现的原因和其与滤光片镜层膜系结构的关系,并得到了消除偏振光带宽分离现象的方法。根据该方法对前期设计的100GHz密集波分复用(DWDM)系统四腔角度调谐窄带滤光片进行了改进,结果表明,该方法能有效的解决偏振光带宽的分离问题,扩大调谐范围。The bandwidth of s-polarization and p-polarization will separate when the narrow-band thin-film filter is in tilted incidence,which will limit the tunable range of the filter.The phenomenon of the polarization bandwidth separation and its relation to the mirror layers of the filter are analyzed.A method about eliminating the polarization bandwidth separation is also presented.According to this method,a former designed 100 GHz dense wavelength division multiplexing four-cavities angle-tuned narrow-band filter is improved.The simulation results prove it can eliminate the polarization bandwidth separation and enlarge the tunable range.

关 键 词：薄膜光学 窄带滤光片 倾斜入射 角度调谐 消偏振 

分 类 号：O484[理学—固体物理]