guide grid

The control conditions engraving strength directed raster and the empirical glittering spectral range are put forward.

对仪器分析教材中有关闪耀光栅的问题，作了详细全面的分析和讨论，说明了一般情况下闪耀波长和闪耀角的关系式，提出了刻划强度定向光栅的控制条件，以及经验性的闪耀光谱范围。

The emphasis is placed on the fabrication,structures of the most efficient(55%) dual grating-assisted directional coupler and the possibility of further improving the coupling efficiency.

文章综述了国内外光耦合器的最新研究进展,着重介绍了目前耦合效率最高(55%),且与偏振无关的双光栅辅助定向耦合器的工艺流程、结构性能以及进一步提高耦合效率的可行性。