| 干涉型光纤水听器相位载波解调技术 |
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| 引用本文： | 李玉深,周波,李绪友. 干涉型光纤水听器相位载波解调技术[J]. 传感器与微系统, 2004, 23(2): 14-17,20 |
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| 作者姓名： | 李玉深 周波 李绪友 |
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| 作者单位： | 哈尔滨工程大学,自动化学院,黑龙江,哈尔滨,150001 |
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| 摘 要： | 通过数学推导和仿真分析,对直接调制光源产生相位载波的马赫-曾德尔(Mach Zehnder)干涉型光纤水听器调制解调技术进行了研究。提出了不能通过干涉信号的峰值或峰峰值检测来控制自动增益控制(AGC)电路增益的方法消除偏振衰落对输出信号的影响。在这一思想的指导下完成了光纤水听器相位载波(PGC)解调电路的设计,给出了实验测试结果。
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| 关 键 词： | 干涉型光纤水听器 相位载波零差检测技术 直接调制激光光源 偏振衰弱 |
| 文章编号： | 1000-9787(2004)02-0014-04 |
Phase modulation and demodulation of interferometric fiber-optic hydrophone using phase generated carrier techniques |
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| LI Yu-shen,ZHOU Bo,LI Xu-you. Phase modulation and demodulation of interferometric fiber-optic hydrophone using phase generated carrier techniques[J]. Transducer and Microsystem Technology, 2004, 23(2): 14-17,20 |
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| Authors: | LI Yu-shen ZHOU Bo LI Xu-you |
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| Abstract: | The phase modulation and demodulation of interferometric Mach-Zehnder fiber-optic hydrophone using phase generated carrier (PGC) technique with direct source modulation is described and analyzed through mathematical calculation and simulation. It is found infeasible to overcome the polarization-induced fading influence on output signal through AGC circuit which uses peak or peak-peak signal of interferometric detection method to control the gain of AGC circuit. In this way, the PGC detection system design is completed and the experimental results are given out. |
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| Keywords: | interferometric fiber-optic hydrophone phase generated carrier (PGC) homodyne demodulation technique direct modulated laser source polarization-induced fading |
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