WANG Xiaoyan,DENG Yiqiang.Multi-reflection optimization of FBG array[J].Journal of Yanbian University,2020,46(02):134-139.
FBG阵列的多重反射性能优化
- Title:
- Multi-reflection optimization of FBG array
- 文章编号:
- 1004-4353(2020)02-0134-06
- 分类号:
- TN253
- 文献标志码:
- A
- 摘要:
- 为抑制光脉冲经过布拉格光纤光栅(FBG)阵列时所产生的冗余次级迭代多重反射,运用模式耦合理论和行列式法分析了FBG的反射特性及各项参数,得到了在固定结构低损耗二阶FBG阵列中抑制光脉冲多重反射的最优化光栅各参数.将优化参数应用于基于二阶FBG阵列的相关函数(检验光系统)的结果显示,光脉冲的自相关程度提高了约28.6%,互相关程度降低了约37.0%.这表明通过优化配置参数可有效降低FBG阵列的多重反射,进而可提高光通信与光传感系统的信号精度.
- Abstract:
- Redundant secondary iterative multiple reflections are generated when the optical pulse signal passes through the fiber Bragg grating(FBG)array, which leads to signal degradation and sensor accuracy degradation. Optical mode coupling theory and determinant method are used to analyze the characteristics of FBG, and the optimal parameters of fixed structure 2 - tap FBG array are obtained to suppress the multiple reflections of optical pulse. The application in a 2 - tap FBG -based correlation function inspection system shows that the auto -correlation of the light pulse is increased by 28.6%, and the cross -correlation is decreased by 37.0%.The results indicate that the signal accuracy of the optical communication and optical sensing system can be improved efficiently by optimizing the configuration parameters to reduce the multiple reflection of the FBG array.
参考文献/References:
[1] WANG C, YAO J. Fiber Bragg gratings for microwave photonics subsystems[J]. Optics Express, 2013,19(21): 22868-22884.
[2] HUANG Y, LI Y, ZHU H, et al. Tunable superstructure fiber Bragg grating with chirp -distribution modulation based on the effect of external stress[J]. Optics Letters, 2012,37(18):3918-3920.
[3] 戴慧芳,陈鹏,赵靖寅,等.啁啾体布拉格光栅的脉冲响应特性[J].光学学报,2019,39(10):1005002.
[4] 薛渊泽,王学峰,罗明明,等.再生光纤布拉格光栅的研究进展[J].激光与光电子学进展,2018,55(2):020007.
[5] WANG Y, LI Z, LIU S, et al. Parallel -integrated fiber Bragg gratings inscribed by femtosecond laser point -by -point technology[J]. Journal of Lightwave Technology, 2019,37(10):2185-2193.
[6] ERDOGAN T. Fiber grating spectra[J]. IEEE J Lightwave Techn, 1997,15(8):1277-1294.
[7] 饶云江,王义平,朱涛.光纤光栅原理及应用[M].北京:科学出版社,2006:110-130.
[8] YARIV A. Coupled -mode theory for guided -wave optics[J]. IEEE J Quantum Electron, 1973,9(9):919-933.
[9] KOGELNIK H. Guided -Wave Optoelectronics[M]. New York: Springer -Verlag, 1990.
[10] 谢海鹤,林振衡,颜黄苹,等.膜层传输矩阵理论在布拉格光纤光栅分析中的应用[J].光子学报,2015,44(11):1106003.
备注/Memo
收稿日期: 2020-04-20 作者简介: 王小燕(1984—),女,博士,讲师,研究方向为光纤通信及光信号处理.
基金项目: 国家自然科学基金青年基金资助项目(11803015); 福建省教育厅中青年教师教育科研项目(JA15474)