| 摘要: |
| 提出了一种基于相移光栅的Sagnac环滤波器的设计.利用Jones矩阵法,建立了该滤波器的理论模型,推导出了传输谱的表达式,并对其进行数值仿真和分析.重点讨论了相移光栅的参量、光纤环臂差对传输光谱的影响.通过数值模拟,得到了具有双带通的梳状滤波特性的传输光谱,可应用于光纤光栅传感和通信系统. |
| 关键词: 光纤 Sagnac环 相移光纤光栅 传输矩阵 滤波器 |
| DOI： |
| 分类号: |
| 基金项目:上海市自然科学基金面上项目(13ZR1430400);上海市教委科研创新一般项目(14YZ070) |
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| Spectral properties in the filter based on phase-shifted grating and Sagnac loop |
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WANG Lu, WU Xiangnong, ZHOU Ming
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College of Information,Mechanical and Electrical Engineering,Shanghai Normal University
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| Abstract: |
| In this paper,a filter was designed basing on the phase shift grating and Sagnac loop.The theoretical model of the filter using Jones Matrix has been established,and the expression of the transmission spectrum has been deduced.The numerical simulations and analysis for the transmission spectrum have been carried out.The effect of the parameters of the phase shift grating and optical fiber ring arm length difference on the transmission spectra have been mainly discussed.Through the numerical simulations,the transmission spectra of comb filter characteristics with dual band-pass have been obtained,and they can be applied in the fiber grating sensing and communication systems. |
| Key words: fiber optics Sagnac loop phase-shifted grating transfer matrix filter |
