首页>
外国专利>
Method and apparatus for controlling waveguide birefringence by selection of a waveguide core width for a top cladding
Method and apparatus for controlling waveguide birefringence by selection of a waveguide core width for a top cladding
展开▼
机译:通过选择用于顶部包层的波导芯宽度来控制波导双折射的方法和设备
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method and apparatus for controlling waveguide birefringence by selection of a waveguide core width for a tuned top clad is described herein. In one example, a dopant concentration within a top cladding material is between 3-6% (wt.). Given a tuned top cladding composition, a width of the waveguide core is pre-selected such that birefringence is minimized, i.e., a zero, or near zero. The desirable width of the waveguide core is determined by calculating the distribution of stress in the top cladding over a change in temperature. From this distribution of stress, a relationship between the polarization dependent wavelength and variable widths of the waveguide in the arrayed waveguide grating are determined. This relationship determines a zero value, or near zero value, of polarization dependent wavelength for a given range of waveguide widths. Accordingly, the width of the waveguide may be selected such that the polarization dependent wavelength is minimized.
展开▼