双锥光纤滤波器的研制

Accurate Formulas of Phase Retardation and Polarization Aberration for Waveplates in Oblique Incident Beam

实验研究了熔锥条件对双锥光纤滤波器的影响。提出一个高斯模型，预测锥的几何形状。获得了窄带（３ｄＢ带宽４ｎｍ）带通双锥光纤滤波器以及带阻中心波长分别为１５３５ｎｍ（损耗－６．６ｄＢ）和１５５９ｎｍ（损耗－１９．６ｄＢ）的带阻双锥光纤滤波器。

The waveplates are used in the laser technology and the polarization microscope often in oblique incident beam. The accurate formulas of phase shift and polarization aberration are presented. The formulas are very important calculating accurately the tuning curve of waveplates and polarization aberration of polarization microscope. The calculations show that if the azimuth angle of crystal is selected properly, the phase shift of waveplates and the ellipticity of polarized light change with incident angle can be greatly decreased.