| 利用扭转高双折射光纤实现波长解调的方法 |
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| 引用本文： | 李立新,吴飞,蔡璐璐,李志全. 利用扭转高双折射光纤实现波长解调的方法[J]. 传感技术学报, 2006, 19(4): 1212-1214,1218 |
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| 作者姓名： | 李立新 吴飞 蔡璐璐 李志全 |
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| 作者单位： | 燕山大学,电气工程学院,秦皇岛,066004 |
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| 基金项目： | 国家自然科学基金，河北省自然科学基金 |
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| 摘 要： | 提出了一种基于扭转高双折射光纤实现光纤光栅波长解调的新型解调系统,对高双折射光纤光栅扭转特性进行了详细的理论推导,给出了数学表达式.通过计算机仿真发现系统输出光强与高双折射光纤扭转角度成标准余弦关系,扭转角度和时输出的光强的比值与波长近似呈线性关系.实验表明,系统具有10 nm的准线性解调范围,与理论分析相吻合.
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| 关 键 词： | 光纤光栅 高双折射光纤 波长解调 |
| 文章编号： | 1004-1699（2006）04-1212-03 |
| 收稿时间： | 2005-08-30 |
| 修稿时间： | 2005-08-30 |
A Novel Wavelength Demodulation Method Using Twisted High Birefringence Fiber |
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| Li lixin,Wu Fei,Cai Lulu,Li Zhiquan. A Novel Wavelength Demodulation Method Using Twisted High Birefringence Fiber[J]. Journal of Transduction Technology, 2006, 19(4): 1212-1214,1218 |
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| Authors: | Li lixin Wu Fei Cai Lulu Li Zhiquan |
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| Affiliation: | Yanshan University, Electric Engineering Qinhuangdao Hebei 066004, China |
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| Abstract: | A novel FBG wavelength demodulation system using twisted high birefringence fiber was presented. The characteristic of twisted high birefringence fiber was investigated in theory, and math expressions were given. The output light intensity of the system and torsion angle of high birefringence fiber are cosine relationship by computer simulation. The ratio of intensities of twist angle is approximately liner with wavelength. The experiment result prove that the system has a 10 nm quasi linerity demodulation range, which is agree with the theory analysis. |
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| Keywords: | fiber Bragg grating (FBG) high birefringence fiber wavelength demodulation |
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