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Fiber-optic Fabry-Perot sensors based on a combination of spatial-frequency division multiplexing and wavelength division multiplexing formed by chirped fiber Bragg grating pairs

机译:基于chi光纤布拉格光栅对形成的空间频分复用和波分复用相结合的光纤法布里-珀罗传感器

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摘要

Effective multiplexing for a very large number of fiber-optic fiber-Bragg-grating-based Fabry-Perot (FBGFP) sensors is proposed that is based on wavelength division multiplexing (WDM) and spatial-frequency division multiplexing (SFDM). For WDM, FBGFP sensors are arranged in different wavelength domains formed by a series of chirped fiber Bragg gratings with different central wavelengths while the sensors with different cavity lengths within the same wavelength domain are multiplexed by use of SFDM because they have different spatial frequencies as a result of their different cavity lengths. In principle, a thousand FBGFP sensors could be multiplexed with such an approach. The experimental results show that a strain accuracy of better than +-10 (mu)(epsilon) has been achieved with little cross talk.
机译:提出了基于波分多路复用(WDM)和空分频多路复用(SFDM)的大量基于光纤-布拉格光栅的法布里-珀罗(FBGFP)传感器的有效多路复用。对于WDM,FBGFP传感器被布置在由一系列具有不同中心波长的fiber光纤布拉格光栅形成的不同波长域中,而相同波长域中具有不同腔长的传感器由于使用了SFDM而被复用,因为它们具有不同的空间频率。不同腔长的结果。原则上,用这种方法可以将一千个FBGFP传感器复用。实验结果表明,在几乎没有串扰的情况下,已经获得了优于+ -10με的应变精度。

著录项

  • 来源
    《Applied Optics》 |2006年第23期|p.5815-5818|共4页
  • 作者

    Y. J. Rao; Z. L. Ran; C. X. Zhou;

  • 作者单位

    Optical Fiber Research Center, School of Communication, University of Electronic Science, Chengdu, Sichuan 610054, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计量学;
  • 关键词

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