倾斜光纤光栅透射光谱对外界介质折射率的响应规律研究  

Response Characteristics of the Transmission Power Spectrum for Tilted Fiber Bragg Grating to Surrounding Refractive Index

作　　者：艾瑞波[1] 刘超[2] 孙祺[2] 牟海维[2] 

机构地区：[1]齐齐哈尔大学理学院,齐齐哈尔161006 [2]东北石油大学电子科学学院,大庆163318

出　　处：《科学技术与工程》2013年第11期3101-3103,3108,共4页Science Technology and Engineering

基　　金：国家自然科学基金(51101027);黑龙江省新世纪优秀人才支持计划;黑龙江省高校青年学术骨干支持项目(1251G004);黑龙江省教育厅科技项目(12511004)资助

摘　　要：倾斜光纤光栅因其独特的结构在传感和通信领域应用前景广阔。基于模式耦合理论,仿真研究介质折射率对倾斜光纤光栅透射功率谱的影响及其变化规律。研究结果表明,当介质折射率在1.35至1.4之间变化时,本文设计的倾斜光纤光栅透射功率谱包层谐振峰位置随外界介质折射率的增大而逐渐向长波长方向移动,波长偏移量与外界介质折射率之间呈良好的线性关系,利用这个结论可进行介质折射率的测量。Tilted fiber bragg grating （TFBG） has a promising application in sensing and communication fields due to their special structure. Based on mode coupling theory, the effect of surrounding refractive index on trans- mission power spectra of TFBG and corresponding changing law were investigated by means of simulation method. The results show that cladding resonance of TFBG shifts to long wavelength with increasing surrounding refractive index with the range of between 1.35 and 1.4, and the shift of wavelength shows a good linear relationship with surrounding refractive index. This conclusion is very useful to measurement for refractive index.

关 键 词：倾斜光纤光栅 透射谱 折射率 理论仿真 

分 类 号：TN253[电子电信—物理电子学] TP212.14[自动化与计算机技术—检测技术与自动化装置]