用相位掩模光刻制作光纤内的布拉格光栅用相位掩模光刻法已把布拉格光栅写入光纤和平面玻璃结构。由加拿大通讯研究中心发展的这种技术通过简化的非全息工艺而用来制作光敏波导内的优质布拉格光栅。相位掩模的作用是使紫外光源相位空间调制，而使光敏玻璃纤维的局部折射率... Photomask fabrication with phase masks Bragg gratings in optical fibers Photomask and Bragg gratings have been written into optical fiber and planar glass structures by photolithography. This technology, developed by the Communications Research Center of Canada, is used to make high quality Bragg gratings in photoconducting waveguides through a simplified non-holographic process. The function of phase mask is to make the phase space of UV light source modulate, and make the local refractive index of photosensitive glass fiber ...