首页>
外国专利>
Waveguide-based bragg gratings with spectral sidelobe suppression and method thereof
Waveguide-based bragg gratings with spectral sidelobe suppression and method thereof
展开▼
机译:具有谱旁瓣抑制的基于波导的布拉格光栅及其方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A waveguide Bragg grating (WBG) is apodized by varying the duty cycle of selected grating periods while fixing the pitch of the grating periods. In one embodiment, the WBG is implemented in a silicon substrate using polysilicon filled trenches of varying width while keeping the grating periods' pitch constant. The polysilicon trenches are formed so that if the width of one trench is increased compared to an adjacent grating period, the trench width in the other adjacent grating period (if present) is decreased.
展开▼