【摘要】 在对光纤光栅折射率分布进行合理假设的基础上，运用耦合模理论计算了光纤光栅的反射特性，对其反射特性与相关参数的关系进行了分析，并且还推导出了用相位掩模法制造光纤光栅的理论根据，得到了一些有益于光纤光栅制造的结论和有用公式。更多还原

【Abstract】 Using the coupled mode theory,we study the reflection properties of the fiber grating with a reasonable assumption of the refraction index distribution.Relationships between the reflection properties and relevant fiber parameters are discussed.The basis of theory to fabricuting fiber gratings are deduced with phase masks,and some valuable conclusions and formulas are obtained.更多还原