发明名称 |
Dual wavelength strain-temperature Brillouin sensing system and method |
摘要 |
An optical fiber strain-temperature sensing system includes first and second optical sources respectively generating first and second light signals having different wavelengths. Optical circulators direct the light signals to an external sensing cable for the respective generation of first and second Brillouin scattered light signals. First and second frequency mixers have a first input respectively coupled to the first and second optical light sources. The optical circulators direct the first and second Brillouin scattered light signals respectively to second inputs of the first and second frequency mixers. First and second transducers are respectively coupled to an output of the first and second frequency mixers and are respectively configured for generating first and second electrical signals indicative of a Brillouin frequency shift of the first and second light signals. A processor is coupled to the first and second transducers, and determines the strain and temperature characteristics of the external sensing cable.
|
申请公布号 |
US7526149(B1) |
申请公布日期 |
2009.04.28 |
申请号 |
US20080176468 |
申请日期 |
2008.07.21 |
申请人 |
QOREX, LLC |
发明人 |
MACDOUGALL TREVOR WAYNE;SANDERS PAUL ERIC |
分类号 |
G02B6/00;G01J1/04;H04B10/00 |
主分类号 |
G02B6/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|