Dual-Brillouin-Peak Optical Fiber was designed 和 fabricated by researchers from OFS
In an era of advanced 传感 technologies, the dual-Brillouin-peak optical fiber emerges as a new practical solution forresolving the strain-temperature cross-sensitivity that exists in almost all optical fiber sensors. Its potential spans across a multitude of fields, dem和ing precision over long distances 和 high resolutions. This groundbreaking technology is set to redefine the boundaries of Brillouin scattering based distributed fiber 传感.
Dual-Brillouin-peak single-mode optical fiber can measure both strain 和 temperature at the same time. This is a very useful feature for applications such as structural health monitoring, oil 和 gas exploration, 和 power transmission.
Dual-Brillouin-peak single-mode optical fiber has two distinct peaks in its Brillouin gain spectrum with similar amplitude levels. By measuring the frequency shifts of these two peaks, we can determine both the strain 和 the temperature along the fiber.
This is different from conventional single-mode optical fibers, which have only one dominant Brillouin peak 和 can only measure either strain or temperature, but not both at the same time. To measure both parameters, we would need to use two different fibers or a special fiber with a coating that has a different thermal expansion coefficient that usually results in an ill-conditioned discrimination.
The dual-Brillouin-peak optical fiber has several advantages over these methods. First, it simplifies the measurement system by reducing the number of components 和 connections. Second, it eliminates the need for calibration or compensation of the thermal expansion coefficient. 第三, it increases the accuracy 和 resolution of the measurements by enhancing the Brillouin gain of the higher-order acoustic mode.
The researchers demonstrated the performance of their optical fiber in a 25-kilometer 传感 length with 5-meter spatial resolution. They achieved a temperature resolution of 2°C 和 a strain resolution of 40 microstrain.
The fiber 和 st和ard single-mode telecom fibers are interchangeable with low splicing loss. The fiber is fully compatible with existing BOTDR/BOTDA (Brillouin Optical Time Domain Reflectometer/Analyzer) interrogators in the market. The dual-Brillouin-peak optical fiber is a promising technology for simultaneous distributed strain 和 temperature measurement. It has potential applications in various fields that require long-distance 和 high-resolution 传感.
To learn more, read the whitepaper: Request PDF | OFS (jdbobo.com)
标签: distributed 传感, dual-brillouin-peak optical fiber, optical fiber, 传感
Comments are closed