| 级联相移光纤光栅反射谱的研究 |
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| 引用本文： | 张芳,励强华. 级联相移光纤光栅反射谱的研究[J]. 哈尔滨师范大学自然科学学报, 2007, 23(2): 53-57 |
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| 作者姓名： | 张芳 励强华 |
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| 作者单位： | 哈尔滨师范大学;哈尔滨师范大学 |
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| 摘 要： | 应用传输矩阵理论分析了单级、多级相移光线光栅的相移大小、相移位置不同和多点相移对光纤光栅反射谱的影响.分析了对称多极相移光纤光栅的光谱特点.设计出二级相移光纤光栅在长度比1∶2∶1,相移角均为π的条件下可得到0.4 nm带宽的滤波器.
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| 关 键 词： | 相移光纤光栅 传输矩阵 相移 级联 反射谱 |
| 修稿时间： | 2006-12-16 |
ANALYSIS FOR REFLECTD SPECTRA OF CASCADED PHASE - SHIFTED FIBER BRAGG GRATINGS |
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| Zhang Fang,Li Qianghua. ANALYSIS FOR REFLECTD SPECTRA OF CASCADED PHASE - SHIFTED FIBER BRAGG GRATINGS[J]. Natural Science Journal of Harbin Normal University, 2007, 23(2): 53-57 |
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| Authors: | Zhang Fang Li Qianghua |
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| Affiliation: | Harbin Normal University |
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| Abstract: | Reflection properties of single stage and cascaded phase-shifted fiber Bragg gratings(PSFBG) were analyzed using a transfer-matrix formulation based on the couple-mode theory.The influence of various factors such as the position,value of the phase shifts of PSFBG on the reflected spectrum was discussed.And the characteristic of cascaded PSFBG was also analyzed.The filter with 0.4 nm bandwidth was schemed out under the condition of the length ratio of second order cascaded PSFBG at 1:2:1. |
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| Keywords: | Phase-shifted fiber Bragg gratings Transfer-matrix Phase shift Cascaded Reflected spectra |
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