首页>
外国专利>
Amplitude mask, and apparatus and method for manufacturing long period grating filter using the same
Amplitude mask, and apparatus and method for manufacturing long period grating filter using the same
展开▼
机译:振幅掩模以及使用该掩模的长周期光栅滤波器的制造装置和方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
An amplitude mask, and an apparatus and method for manufacturing a long period grating filter using the same, are provided. When a long period grating is manufactured by selectively passing laser light to an optical fiber, the amplitude mask periodically passes laser light to the optical fiber. The amplitude mask includes two masks having periodically alternating pass areas for passing the laser light and nonpass areas for preventing passing of the laser light, the two masks being continuously rotated in opposite directions. The period of the pass area thus continuously changes. In this mask, two masks each having a predetermined period are rotated in opposite directions, to thus provide an amplitude mask period depending on the angle of rotation. Thus, the period of the amplitude mask can be continuously changed.
展开▼