• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Optical fiber technology >Multimode interferometer based on no-core fiber with GQDs-PVA composite coating for relative humidity sensing
【24h】

Multimode interferometer based on no-core fiber with GQDs-PVA composite coating for relative humidity sensing

机译：基于无芯光纤并带有GQDs-PVA复合涂层的多模干涉仪，用于相对湿度传感

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

A simple fabrication multimode interferometer (MMI) with graphene quantum dots (GQDs) and polyvinyl alcohol (GQDs-PVA) composite for relative humidity (RH) measurement is proposed and verified in this letter. The MMI includes two sections of single-mode fiber (SMF) and a length of 1.5 cm no-core fiber (NCF) is spliced between two sections of SMF, one of the splicing point is normal fused and the other splicing point is offset fusion splicing. The GQDs-PVA composite is prepared using a magnetic stirrer, and then is transferred to the surface of NCF by dip-coating machine. Refractive index of GQDs-PVA composite decreases with the increase of RH values caused by porous surface and water absorption characteristics of GQDs-PVA nanoparticle, which will lead to changes in the peak intensity of the interference spectrum. Experiment is executed at room temperature and the results indicate that the resonance intensity would decrease and the total intensity reduction of the interference spectrum was -20.473 dB with the measurement range changing from 38.8% RH to 88.65% RH. In addition, the proposed sensor presents good reversibility and repeatability. In a whole, the proposed sensor has simple structure, small size, low cost, high sensitivity and great repeatability.
机译：提出并验证了一种具有石墨烯量子点（GQDs）和聚乙烯醇（GQDs-PVA）复合材料的简单制造多模干涉仪（MMI），用于相对湿度（RH）测量。 MMI包括两段单模光纤（SMF），并且在这两段SMF之间拼接了长度为1.5厘米的无芯光纤（NCF），其中一个拼接点是正常熔融的，而另一个拼接点是偏移熔融的拼接。使用电磁搅拌器制备GQDs-PVA复合材料，然后通过浸涂机将其转移到NCF表面。 GQDs-PVA纳米颗粒的多孔表面和吸水特性导致RH值增加，导致GQDs-PVA复合材料的折射率降低，这将导致干涉光谱的峰强度发生变化。在室温下进行实验，结果表明，在测量范围从38.8％RH变为88.65％RH的情况下，共振强度会降低，干涉谱的总强度降低为-20.473 dB。另外，提出的传感器具有良好的可逆性和可重复性。总体而言，所提出的传感器结构简单，体积小，成本低，灵敏度高，重复性好。

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