Luo Zhihui, Wen Hongqiao, Guo Huiyong, Yang Minghong
Opt Express. 2013 Sep 23;21(19):22799-807. doi: 10.1364/OE.21.022799.
A time- and wavelength-division multiplexing sensor network based on ultra-weak fiber Bragg gratings (FBGs) was proposed. The low insertion loss and the high multiplexing capability of the proposed sensor network were investigated through both theoretical analysis and experimental study. The demodulation system, which consists of two semiconductor optical amplifiers and one high-speed charge-coupled device module, was constructed to interrogate 2000 serial ultra-weak FBGs with peak reflectivity ranging from -47 dB to -51 dB and a spatial resolution of 2 m along an optical fiber. The distinct advantages of the proposed sensor network make it an excellent candidate for the large-scale sensing network.
提出了一种基于超弱光纤布拉格光栅（FBG）的时分和波分复用传感器网络。通过理论分析和实验研究，对所提出的传感器网络的低插入损耗和高复用能力进行了研究。构建了由两个半导体光放大器和一个高速电荷耦合器件模块组成的解调系统，用于询问2000个串联的超弱FBG，其峰值反射率范围为-47 dB至-51 dB，沿光纤的空间分辨率为2 m。所提出的传感器网络的明显优势使其成为大规模传感网络的优秀候选者。
