光学学报, 2002, 22 (9): 1088, 网络出版: 2006-08-08
环境折射率变化对长周期光栅特性影响的研究
Effect of Change of Ambient Refractive Index on Characteristics of Long-Period Fiber Gratings
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,与实验符合得很好.
Abstract
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.
童治, 魏淮, 王目光, 王智, 简水生. 环境折射率变化对长周期光栅特性影响的研究[J]. 光学学报, 2002, 22(9): 1088. 童治, 魏淮, 王目光, 王智, 简水生. Effect of Change of Ambient Refractive Index on Characteristics of Long-Period Fiber Gratings[J]. Acta Optica Sinica, 2002, 22(9): 1088.
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