Proposal for eliminating the external disturbance via digital PGC technique in a multiplexed fiber interferometer measurement system

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• 作者：Jun Zhu ; Ke Yang ; Hao Yin ; Hui Wang ; Benli Yu ; ^{benliyu@ahu.edu.cn}
• 关键词：Fiber optical sensor ; External disturbances ; PGC ; Vibration measurement
• 刊名：Optics Communications
• 出版年：2013
• 出版时间：15 May, 2013
• 年：2013
• 卷：295
• 期：Complete
• 页码：53-57
• 全文大小：1176 K

文摘

We demonstrate a multiplexed fiber interferometer measurement system for eliminating the external disturbance using the digital phase generated carrier (PGC) demodulation technique. By applying two fiber Bragg gratings (FBG) and two fiber interferometers that share the reference arm and part of the sensing arm in this measurement system, we find that the system can be used for detecting the useful signal and the external disturbances is reduced by 26 dB. Thus, our work may provide some new possibilities for technological applications in vibration measurement.