| 光纤干涉仪数字相位生成载波解调系统数据采集单元设计 |
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| 引用本文： | 匡武,张敏,王利威,柏林厚,廖延彪,赖淑蓉.光纤干涉仪数字相位生成载波解调系统数据采集单元设计[J].中国激光,2005,32(8):086-1090. |
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| 作者姓名： | 匡武 张敏 王利威 柏林厚 廖延彪 赖淑蓉 |
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| 作者单位： | 清华大学电子工程系,北京,100084 |
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| 基金项目： | 国家863重大项目（2001AA602011-11）. |
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| 摘 要： | 数字化相位生成载波（PGC）方法是实现光纤干涉仪大动态范围、高精度信号检测的主要手段。为了实现一个实用系统，必须对该方法的各种参数进行深入研究。以非平衡干涉仪为基础，推导了数据采集单元和相位生成载波方法相关参数及待测信号参数之间的关系，提出了抗混叠滤波器的设计方法，给出了实验结果，实现了高精度相位生成载波数字解调系统的设计。
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| 关 键 词： | 光学器件 光纤干涉仪 数字处理芯片 数据采集 频谱 相位生成载波 |
| 文章编号： | 0258-7025（2005）08-1086-05 |
| 收稿时间： | 2004-08-12 |
Data Acquisition Method for Digital Phase Generated Carrier Demodulation System of Optical Fiber Inerferometers |
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| KUANG Wu,ZHANG Min,WANG Li-wei,BO Lin-hou,LIAO Yan-biao,LAI Shu-rong.Data Acquisition Method for Digital Phase Generated Carrier Demodulation System of Optical Fiber Inerferometers[J].Chinese Journal of Lasers,2005,32(8):086-1090. |
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| Authors: | KUANG Wu ZHANG Min WANG Li-wei BO Lin-hou LIAO Yan-biao LAI Shu-rong |
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| Abstract: | Digital phase generated carrier (PGC) is the key method for larger dynamic and high sensitivity detection of optical fiber interferometers. Many important parameters should be considered for the realization of a practical system. Based on non-equilibrium interferometer, the relation of the measured signal parameters to PGC parameters and also data sampling parameters are deduced in this paper. And the design of the anti-aliasing fiter is proposed along with the experimental results and the high accuracy digital PGC demodulation system is realized. |
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| Keywords: | optical devices optical fiber interferomter digital signal processing data acquisition spectrum phase generated carrier |
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