结合波分复用和空分复用技术, 可增加光纤Bragg光栅(FBG)传感波长的解调数目。开发了FBG传感器检测仪与计算机系统之间的光纤Bragg光栅传感检测系统。该系统通过串口总线分别与光开关和解调仪通信, 实现了传感光谱的实时描绘和16通道的FBG传感中心波长的动态更新。测试结果表明, 系统工作波长范围为1527~1566nm, 中心波长分辨率为1pm, 一次采集光栅波长信息时间为620ms。

By combining wavelength division multiplexing(WDM) and spatial division multiplexing(SDM), the number of fiber Bragg grating(FBG) sensor demodulation wavelength can be increased. The fiber Bragg grating sensor detection system that is between FBG sensor detector and computer systems is developed. By serial bus, the system can communicate respectively with optical switches and demodulator, achieve the real-time rendering of sensing spectrum and dynamic update FBG sensing center wavelength of 16 channels. Test results show that system work wavelength range is 1527~1566nm, center wavelength resolution is 1pm, and the wavelength collected time is 620ms.