BOTDR optical fiber sensor temperature performance optimization based on DoE
This Paper presents the results of simulations as well as theoretical discussions on the application of temperature sensing using BOTDR optical fiber sensor which based on spontaneous Brillouin scattering.Several traditional definitions of Stimulated Brillouin Scattering(SBS) threshold power and a new definition using temperature power change coefficient is explained using the simulation model of BOTDR sensor.Due to the fact that the sensor performance is affected by several factors with interaction between each of the factors,DoE provides a statistically accurate strategy for simulation to determine the optimal settings for the constructed sensor.The result had shown SBS suppression by 8.5dBm to achieve the maximum sensing distance of up to 110km.
This paper deals with the study on the extracting conditions of flavonoid from tea.Response surface methodology was used to obtain the optimum extracting conditions by Design-Expert 6.0.The research findings show that the optimum extracting conditions were as follows:extracting 60 min,water temperature 80℃,60%alcohol,10 times volumes.