Atlantis Highlights in Materials Science and Technology
It is known as the non-native info in the Brillouin spectrum, which limits the minimal temperature and pressure detection accuracy. The DPP and Brillouin echo methods, using differential measurement with two pump pulses, are free from this problem. The Brillouin echo-based mostly sensor has a great signal-to-noise ratio, while the DPP-BOTDA owns some great benefits of simple set up and easy implementation. For the BOCDA, its operating principle permits it to circumvent the heartbeat-based mostly restrict on the spatial decision and two specific implementations are introduced, which are enabled by the frequency and part modulation strategies. A transient overview of …