分布式大容量光纤光栅传感网络的组网技术

Networking technology of the distributed large capacity fiber grating

基于光纤光栅复用传感原理,结合F-P可调谐滤波技术,采用波分复用与空分复用相结合的方法构建光纤光栅复用传感网络,并对传感网络中的电源、可调谐滤波器、光电探测器、光开关及传感光纤光栅阵列的组成等进行分析和选择,提出了结构优化的分布式、大容量光纤光栅传感网络的组网方案。通过在光路中使用F-P标准具和参考光栅对波长值进行标定和校准,提高了传感系统的测量精度,为构建大容量、高精度、实时性强的光纤光栅传感系统提供了设计参考。分布式大容量光纤光栅传感网络在多点、多参量和大空间范围传感测量领域具有广阔的应用前景。

Based on the principle of fiber grating multiplexing sensors,combined the technology of F-P tunable filter,the fiber grating sensing network was built by the method of wavelength division multiplex(WDM)combined with space division complex(SDM),and the power supply,photoelectric detector,optical switch,tunable filter and the composition of the sensor array in the sensor network are analyzed and choice,respectively.A distributed and large capacity fiber grating sensor network with optimized structure is proposed.By using F-P standard and reference grating to adjust and calibrate the wavelength value in the optical path,the measurement precision of the sensing system is improved,which provides a design basis for the construction of the fiber grating sensing system with large capacity,high precision and strong real-time performance.Distributed large capacity fiber grating sensing network has a broad application prospect in the field of multi-point,multi-parameter and large-space sensing and measurement.