• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Conference on Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications VIII, Jul 9-11, 2002, Seattle, Washington, USA >Fiber sensing with photorefractive fiber
【24h】

Fiber sensing with photorefractive fiber

机译：用光折变光纤进行光纤传感

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Optical fibers have been widely used for transmitting temporal signal. However, the transmission of spatial signal has not been fully exploited. Although multimode fiber has a large space-bandwidth product (roughly equal to the number of modes), transmitting spatial signals by using a fiber is rather difficult. When a laser beam is launched into a multimode fiber, the exit light field produces a complicated speckle pattern caused by the modal phasing of the fiber. It is difficult to recover the transmitted information from the speckle field. However, the fiber speckle field can be used for fiber sensing with a holographic method. In other words, if a hologram is made with the speckle fiber field, the information of the fiber status can be recovered. Thus by reading the hologram by the same speckle field, the reference beam can be reconstructed, which represents the detection of the speckle field. In other words, instead of exploiting the temporal content, the spatial content from a multimode fiber can be exploited for sensing. Our analyses and experimentations have shown that the fiber specklegram sensor (FSS) is highly sensitive to perturbation, and it is less vulnerable to the environment factors. Applications of the FSS to temperature, transversal displacement, and dynamic sensing are also included.
机译：光纤已被广泛用于传输时间信号。但是，尚未充分利用空间信号的传输。尽管多模光纤具有很大的空间带宽乘积（大约等于模数），但是使用光纤传输空间信号却相当困难。当激光束发射到多模光纤中时，出射光场会由于光纤的模态定相而产生复杂的斑点图案。从散斑场中恢复发送的信息是困难的。然而，光纤散斑场可用于通过全息方法进行光纤感测。换句话说，如果利用散斑纤维场制作全息图，则可以恢复纤维状态的信息。因此，通过以相同的散斑场读取全息图，可以重建参考光束，该参考光束表示散斑场的检测。换句话说，代替利用时间内容，可以利用来自多模光纤的空间内容进行感测。我们的分析和实验表明，光纤散斑图传感器（FSS）对扰动高度敏感，并且不易受到环境因素的影响。 FSS在温度，横向位移和动态传感方面的应用也包括在内。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号