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提出了一种基于以太无源光网络(EPON)的光纤布拉格光栅(FBG)传感网络多传感通道切换控制方案。控制传感通道切换的多个光开关分别与EPON系统中的多个光网络单元(ONU)相连,利用各ONU间严格的时间同步特性在各ONU控制下实施对多个光开关的同步切换控制,实现各FBG传感通道与传感解调模块间的有序连通。实验结果表明,此方案的稳定性较好,并且具有较灵活的扩展特性。
A multi-sensing channel switching control scheme based on fiber-optic Bragg grating (FBG) sensing network based on Ethernet Passive Optical Network (EPON) is proposed. A plurality of optical switches controlling switching of sensing channels are respectively connected with a plurality of optical network units (ONUs) in the EPON system. By using the strict time synchronization characteristics between the ONUs, the synchronous switching control of multiple optical switches is implemented under the control of each ONU. , To achieve an orderly connection between each FBG sensing channel and the sensing demodulation module. Experimental results show that this scheme has better stability and has more flexible extension characteristics.