公开(公告)号：US20040264858A1

公开(公告)日：2004-12-30

申请号：US10789374

申请日：2004-02-27

Applicant: Teraxion Inc.

Inventor： Joshua E. Rothenberg

IPC: G02B006/34

CPC classification number: G02B5/1857 ,  G02B6/02138

Abstract: An apodized fiber Bragg grating, and a phase mask, method and system for making such a grating are disclosed. The refractive index profile of the grating has a periodic apodization phase component which is designed so that the grating fringes reflecting light in a spectral region of interest are apodized, by generating spurious reflection features outside of this spectral region of interest. Apodization is therefore provided through a phase variation of the grating as opposed to an amplitude variation. The phase component is added to the profile of the phase mask grating corrugations to obtain the phase-apodized grating.

Abstract translation: 公开了一种变迹光纤布拉格光栅，以及用于制造这种光栅的相位掩模，方法和系统。 光栅的折射率分布具有周期性的变迹相位分量，其被设计成通过在该感兴趣的光谱区域之外产生杂散反射特征来将感兴趣的光谱区域中的光反射的光栅条纹变暗。 因此，通过与幅度变化相反的光栅的相位变化来提供变迹。 将相位分量添加到相位掩模光栅波纹的轮廓以获得相位变迹的光栅。