不同折射率调制的光纤光栅的特性及其应用

介绍了九种不同折射率调制的光纤光栅的折射率分布及其光谱特性,建立了各种光纤光栅的数学模型,并分析了它们的优缺点及其应用特点。给出了各种光纤光栅之间的联系,并指出两种或多种单一折射率分布的光纤光栅的组合形式将是以后的发展趋势。以折射率分布为出发点,深入地讨论了各种光纤光栅的周期、折射率调制深度、中心反射光波长或透射光波长、带宽、反射率等参数与其功能的关系,为实际系统的设计提供了参考。

Characters and applications of fiber gratings with various index modulations

The refractive index distributions and spectral characters of fiber gratings with various index changes are introduced. Mathematical model of all kinds of fiber gratings is established, their advantages and disadvantages and application features are analyzed, the correlations of various fiber gratings are given. And it's proposed that the development trend will be combination of two or several kinds of gratings with one index change. To begin with index distribution, the relations between functions of various fiber gratins and their parameters such as periods, index modulation depth, center reflected or refracted wavelength, band width, reflective index are discussed, they offer references for designing system.