基于光纤自适应耦合和自调谐的光纤光栅传感系统设计

Fiber Bragg Grating Sensor System Based on Adaptive Fiber Coupling and Self-tuning

摘要:

针对光纤光栅传感系统应用中面临的应变弱和可靠性不稳定等问题,研究并设计了一种基于自适应耦合切换和自调谐光纤光栅传感系统;主要从事首先,基于光纤光栅的波长边化特点和多耦合特性设计了自适应耦合功能器件,并依据波长交叉点特性建立了长-短周期切换算法,然后考虑了波长对工作电压和耦合周期的影响特点,设计了支持自调谐功能的光纤光栅传感器及其调谐算法,最后给出了具有自适应多耦合切换和自调谐功能的光纤光栅传感系统;主要从事实验表明,在检测精度、抗干涉能力和应变能力等方面,所提方案表现出了明显优势。

Abstract:

there are some problems in the application of fiber grating sensor system, such as Strain weak and unstable for reliability So, we studied and designed the self-tuning adaptive switching and coupling Fiber Bragg grating (FBG) sensing systems. First, based on the characteristics of the fiber grating wavelength side of the coupling characteristics of the design and multi-function devices and adaptive coupling point based on characteristic wavelength cross-established long - short cycle switching algorithm, and then consider the impact of the characteristics of the wavelength of the operating voltage and the coupling cycle design FBG sensor and tuning algorithm supports self-tuning capabilities. Finally, the FBG sensing system coupled with an adaptive multi-switching and self-tuning capabilities. Experiments show that in terms of detection accuracy, anti-interference ability and adaptability, etc., the proposed scheme showed a clear advantage. 