发明申请
WO2023069333A1 FEW-MODE RAYLEIGH-BASED DISTRIBUTED FIBER SENSOR FOR SIMULTANEOUS TEMPERATURE AND STRAIN SENSING
审中-公开
基本信息:
- 专利标题： FEW-MODE RAYLEIGH-BASED DISTRIBUTED FIBER SENSOR FOR SIMULTANEOUS TEMPERATURE AND STRAIN SENSING
- 申请号：PCT/US2022/046815 申请日：2022-10-17
- 公开(公告)号：WO2023069333A1 公开(公告)日：2023-04-27
- 发明人： FANG, Jian , WANG, Ting
- 申请人： NEC LABORATORIES AMERICA, INC.
- 申请人地址： 4 Independence Way
- 专利权人： NEC LABORATORIES AMERICA, INC.
- 当前专利权人： NEC LABORATORIES AMERICA, INC.
- 当前专利权人地址： 4 Independence Way
- 代理机构： KOLODKA, Joseph
- 优先权： US17/966,869 2022-10-16
- 主分类号： G01D5/353
- IPC分类号： G01D5/353 ; G01H9/00 ; G01K11/32 ; G01L1/24
摘要：
Aspects of the present disclosure describe Rayleigh-based DTSS that utilizes few-mode fiber (FMF), which supports multiple spatial modes. For each spatial mode, a wavelength-scanning configuration gives the relative wavelength (or frequency) shift between two consecutive measurements. The temperature and strain changes can therefore be separated through different temperature/strain sensitivities of various mode-pairs. Advantageously, Rayleigh-based DTSS according to aspects of the present disclosure removes temperature-strain ambiguity, enhances measurement accuracy, reduces errors, and enables new features for multi-parameter sensing.
IPC结构图谱:
| G | 物理 |
| --G01 | 测量；测试 |
| ----G01D | 非专用于特定变量的测量；不包含在其他单独小类中的测量两个或多个变量的装置；计费设备；未列入其他类目的测量或测试 |
| ------G01D5/00 | 用于传递传感构件的输出的机械装置；将传感构件的输出变换成不同变量的装置，其中传感构件的形式和特性不限制变换装置；非专用于特定变量的变换器 |
| --------G01D5/02 | .采用机械装置 |
| ----------G01D5/28 | ..利用光束的偏转，例如直接的光指示 |
| ------------G01D5/34 | ...利用光电元件检测光束 |
| --------------G01D5/353 | ....影响光纤的传输特性 |