HIBISCUS: high sensitivity stimulated brillouin scattering sensors

HIBISCUS：高灵敏度受激布里渊散射传感器

• 批准号: 453568-2013
• 负责人: Kashyap, Raman
• 金额: $ 8.49万
• 依托单位: École Polytechnique de Montréal
• 依托单位国家: 加拿大
• 项目类别: Idea to Innovation
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=541573
• 关键词: HIBISCUS; sensitivity; stimulated; brillouin; scattering

This proposal is on increasing the distributed temperature and strain sensing (DTS) capability of optical fiber sensors by at least an order of magnitude using a novel stimulated Brillouin scattering (SBS) scheme for the first time. This technology, which is the subject of a filed patent, has three aims: 1. To enhance the true sensitivity of DTS, 2) reduce the cost of DTS and 3) to demonstrate a prototype based on SBS. The Brillouin frequency shift is a weak function of temperature and strain. By using higher order stimulated Brillouin scattering, we have recently shown that the Nth. order Stokes wave has N x the frequency shift of the 1st order Stokes shift. We aim to combine well established optical techniques to convert our current non-distributed sensing scheme into a powerful high sensitivity and high spatial resolution scheme. Our approach is based on comparative sensing, which compensates drift, inevitable in such DTS systems. Sensing over km long distances is anticipated with << 0.5m sensitivity with a resolution of sub-degree C.

该提案是关于首次使用新颖的受激布里渊散射（SBS）方案将光纤传感器的分布式温度和应变传感（ESTA）能力提高至少一个数量级。这项技术，这是一个申请专利的主题，有三个目的：1。为了提高SBS的真实灵敏度，2）降低SBS的成本和3）演示基于SBS的原型。布里渊频移是温度和应变的弱函数。通过使用高阶受激布里渊散射，我们最近表明，第N。一阶斯托克斯波具有N ×一阶斯托克斯频移的频移。我们的目标是联合收割机建立良好的光学技术转换成一个强大的高灵敏度和高空间分辨率的计划，我们目前的非分布式传感方案。我们的方法是基于比较感测，补偿漂移，不可避免的，在这样的MEMS系统。预计可在公里长距离上进行传感，灵敏度<<0.5 m，分辨率为摄氏度以下。