| 干涉型光纤传感器阵列消PIF技术的研究 |
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| 引用本文： | SHEN Liang,沈梁,叶险峰,李志能.干涉型光纤传感器阵列消PIF技术的研究[J].半导体光电,2001,22(2):102-104,120. |
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| 作者姓名： | SHEN Liang 沈梁 叶险峰 李志能 |
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| 作者单位： | 1. Information and Electronic Engineering Department,Zhejiang University
2. 浙江大学 信息与电子工程学系, |
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| 基金项目： | 国家自然科学基金资助项目（69702003） |
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| 摘 要： | 针对低双折射光纤双光束干涉型传感器两臂偏振态随机变化引起的信号衰落，提出了一种新型消偏振方式，它可以在可见度略有下降的情况下，较好地消除偏振态变化引起的信号可见度的随机变化。该方案是通过相互正交的两个偏振态来补偿由于其中一个偏振态变化导致的干涉信号衰落。通过自动增益控制电路可以使传感信号稳定，能够在信噪比有所下降的情况下消除偏振衰落的影响，实现了干涉型光纤传感器的消偏振衰落。
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| 关 键 词： | 光纤干涉仪 光偏振态 传感器列 PIF技术 |
| 文章编号： | 1001-5868(2001)02-0102-03 |
Study on Elimination of PIF in Interferometric Fiber Optic Sensor and Its Array |
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| SHEN Liang,YE Xian feng,LI Zhi neng.Study on Elimination of PIF in Interferometric Fiber Optic Sensor and Its Array[J].Semiconductor Optoelectronics,2001,22(2):102-104,120. |
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| Authors: | SHEN Liang YE Xian feng LI Zhi neng |
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| Abstract: | A new method using polarization switching for elimination of polarization induced signal fading(PIF) in interferometric sensor and its array is described. The visibility can be recovered by polarization switching that changes an orthogonal state of polarization(SOP) to an in pulse SOP.By adding an electronic automatic gain control circuit, the signal fading is recovered at the expense of somewhat of signal to noise ratio degradation.The application of the method in the interferometric array is introduced. |
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| Keywords: | fiber optic interferometer optical polarization polarization switching sensor array |
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