摘要
将长周期光纤光栅简化为三层阶跃折射率波导结构 ,采用弱导标量近似和泄漏模式的概念结合耦合模理论较全面地、定量地分析了环境折射率变化对长周期光纤光栅谐振峰位置和深度等特性的影响 ,获得了一些有益的结论 。
A long-period fiber grating is simplified as a three-layer step-index waveguide. By using the concepts of scalar approximation and leaky-mode and the couple-mode theory, the influence of the change of ambient refractive index upon the LPG′s characteristics such as resonance wavelength and peak loss in detail is analyzed. Some useful conclusions are obtained which agree with the experimental results very well.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2002年第9期1088-1091,共4页
Acta Optica Sinica
基金
国家"8 6 3"计划 (86 3 317 0 2 0 4 99)资助课题
